DIAGNOSIS FUNCTION


ENGINE WARNING LAMP (CHECK ENGINE LAMP)

When the abnormal condition occurs with respect to the items of electronically controlled fuel injection system shown in the table, the engine warning lamp is illuminated. When the lamp remains illuminated after the engine start, or when the lamp is illuminated while the engine is running, check the diagnosis code output. There are two methods for checking the indicator lamp burn out: When the ignition switch is in ON position, the indicator lamp is illuminated, and then extinguished few seconds later. When the ignition switch is in ON position and the engine starts, the indicator lamp is extinguished.

ENGINE WARNING LAMP INSPECTION ITEMS
Code No.
 Diagnosis item
P0003*1
 Suction control valve open
P0004*1
 Suction control valve battery short
P0016*1
 Crank angle sensor/camshaft position sensor phase problem
P0047*1
 Variable geometry control solenoid valve circuit low input
P0048*1
 Variable geometry control solenoid valve circuit high input
P0072
 Intake air temperature sensor circuit low input
P0073
 Intake air temperature sensor circuit high input
P0088*1
 Common rail high pressure malfunction
P0089*1
 Suction control valve stuck
P0093*1
 Fuel leak problem
P0102
 Air flow sensor circuit low input
P0103
 Air flow sensor circuit high input
P0106*1
 Manifold absolute pressure sensor range/performance problem
P0107*1
 Manifold absolute pressure sensor circuit low input
P0108*1
 Manifold absolute pressure sensor circuit high input
P0112
 EGR gas temperature sensor circuit low input
P0113
 EGR gas temperature sensor circuit high input
P0117
 Engine coolant temperature sensor circuit low input
P0118
 Engine coolant temperature sensor circuit high input
P0122
 Throttle position sensor circuit low input
P0123
 Throttle position sensor circuit high input
P0182
 Fuel temperature sensor circuit low input
P0183
 Fuel temperature sensor circuit high input
P0191*1
 Rail pressure sensor range/performance problem
P0192*1
 Rail pressure sensor circuit low input
P0193*1
 Rail pressure sensor circuit high input
P0201*1
 No. 1 injector circuit malfunction
P0202*1
 No. 2 injector circuit malfunction
P0203*1
 No. 3 injector circuit malfunction
P0204*1
 No. 4 injector circuit malfunction
P0299*1
 Turbocharger under boost condition
P0301*1
 No. 1 cylinder injector malfunction (No injection)
P0302*1
 No. 2 cylinder injector malfunction (No injection)
P0303*1
 No. 3 cylinder injector malfunction (No injection)
P0304*1
 No. 4 cylinder injector malfunction (No injection)
P0335*1
 Crank angle sensor system
P0336*1
 Crank angle sensor range/performance problem
P0340*1
 Camshaft position sensor system
P0341*1
 Camshaft position sensor range/performance problem
P0381
 Glow plug open/short malfunction
P0401
 EGR flow insufficient
P0403
 EGR valve DC motor malfunction
P0420*1
 Catalyst malfunction
P0427*1
 No. 2 exhaust gas temperature sensor (catalyst temperature) circuit low input
P0428*1
 No. 2 exhaust gas temperature sensor (catalyst temperature) circuit high input
P0489
 EGR valve position sensor circuit low input
P0490
 EGR valve position sensor circuit high input
P0500
 Vehicle speed signal system
P0545*1
 No. 1 exhaust gas temperature sensor circuit low input
P0546*1
 No. 1 exhaust gas temperature sensor circuit high input
P0602*1
 Variant coding system
P0604
 Random access memory (RAM) malfunction
P0605*1
 Read only memory (FLASH ROM) malfunction
P0606*1
 Engine-ECU (main CPU) malfunction
P0607*1
 Engine-ECU (sub CPU) malfunction
P062F
 EEPROM malfunction
P0630*1
 Chassis number not programmed
P0638
 Throttle valve control servo stuck
P0642*1
 Analog sensor reference voltage No. 1 too low
P0643*1
 Analog sensor reference voltage No. 1 too high
P064C
 Glow control unit malfunction
P0652*1
 Analog sensor reference voltage No. 2 too low
P0653*1
 Analog sensor reference voltage No. 2 too high
P0683
 Glow control unit communication abnormality
P1203*1
 Capacitor insufficient charging
P1204*1
 Capacitor excessive charging
P1272
 Pressure limiter malfunction
P1273*1
 Supply pump insufficient flow
P1274*1
 Supply pump protection
P1275*1
 Supply pump exchange
P1298*1
 Variable geometry turbocharger control system malfunction (high pressure)
P1299*1
 Variable geometry turbocharger control system malfunction (low pressure)
P1427*1
 No. 3 exhaust gas temperature sensor (DPF temperature) circuit low input
P1428*1
 No. 3 exhaust gas temperature sensor (DPF temperature) circuit high input
P1497*1
 DPF system malfunction
P1498*1
 Excessive PM accumulated in DPF
P1499*1
 Abnormally high DPF temperature
P1625*1
 Injection quantity compensation value error
P1626*1
 Injection quantity compensation value not coding
P2118
 Throttle valve control DC motor current malfunction
P2122*1
 Accelerator pedal position sensor (main) circuit low input
P2123*1
 Accelerator pedal position sensor (main) circuit high input
P2127*1
 Accelerator pedal position sensor (sub) circuit low input
P2128*1
 Accelerator pedal position sensor (sub) circuit high input
P2138*1
 Accelerator pedal position sensor (main and sub) range/performance problem
P2146*1
 Injector common 1 (cylinder No. 1 and No. 4) circuit open
P2147*1
 Injector common 1 (cylinder No. 1 and No. 4) circuit earth short
P2148*1
 Injector common 1 (cylinder No. 1 and No. 4) circuit battery short
P2149*1
 Injector common 2 (cylinder No. 2 and No. 3) circuit open
P2150*1
 Injector common 2 (cylinder No. 2 and No. 3) circuit earth short
P2151*1
 Injector common 2 (cylinder No. 2 and No. 3) circuit battery short
P2228
 Barometric pressure sensor circuit low input
P2229
 Barometric pressure sensor circuit high input
P2413
 EGR system performance
P2426
 EGR cooling valve control circuit (low)
P2427
 EGR cooling valve control circuit (high)
P244A
 DPF differential pressure too low
P2454*1
 Exhaust differential pressure sensor circuit low input
P2455*1
 Exhaust differential pressure sensor circuit high input
P2463*1
 No chance of forcible regeneration of DPF
note
  • After the engine-ECU has detected a malfunction, the engine warning lamp illuminates when the engine is next turned on and the same malfunction is re-detected. However, for items marked with a "*1" in the diagnosis code number column, the engine warning lamp illuminates only on the first detection of the malfunction.
  • When the fuel runs out, the engine warning lamp would illuminate possibly. Supplying the fuel turns off the engine warning lamp, but the diagnosis code No. P1272 is stored.
  • Even if the malfunction is not detected when the engine-ECU monitors the malfunction three consecutive times* after the engine warning lamp illuminates, turn off the engine warning lamp when the engine starts next time.
    *: In this case, "one time" in monitoring the malfunction means the period from the time of the current engine start to the time of the next engine start.

METHOD OF READING AND ERASING DIAGNOSIS CODES
Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - Diagnosis Function .

INSPECTION WITH M.U.T.-III SERVICE DATA AND ACTUATOR TEST
Reading service data or performing an actuator test using M.U.T.-III enables you to check the vehicle body harnesses and components for abnormalities. Sensor input or output to the actuator can be displayed in numerical values or graphs in the service data while in the actuator test the actuator can be forced to drive (ON/OFF driving in the specified time).

DIAGNOSIS PROCEDURE
1.Connect M.U.T.-III to perform inspection with the service data and actuator test function.
2.If any abnormality is found, inspect and repair vehicle body harnesses and components.
3.After repair, check that input and output have returned to normal.
4.If a failure code which is caused by inspection and repair work is generated, erase the failure code.
5.Disconnect M.U.T.-III and perform a test run to check that the malfunction phenomenon is resolved.

PROVISIONAL DIAGNOSIS CODE CONFIRMED
If detecting the malfunction during the first drive cycle, the engine-ECU temporarily stores the diagnosis code as the provisional diagnosis code. If detecting the same malfunction during the next drive cycle, the engine-ECU determines that the malfunction exists. The engine-ECU stores the diagnosis code.
On the M.U.T.-III, it is possible to display the stored provisional diagnosis code which the engine-ECU had detected during the first drive cycle. This makes it possible to confirm in one drive cycle whether the malfunction could happen again after the repair.

CONFIRMATION METHOD
1.After the ignition switch is in "LOCK" (OFF) position, connect the M.U.T.-III to the diagnosis connector.
2.Turn the ignition switch to the "ON" position.
3.Select "MPI/GDI/DIESEL" from System select Screen of the M.U.T.-III.
4.Select "Special Function" from MPI/GDI/DIESEL Screen.
5.Select "Provisional DTCs" from Special Function Screen.

FREEZE FRAME DATA
When the engine-ECU detects a malfunction and stores a diagnosis code, it also stores a current status of the engine. This function is called "Freeze frame data". By analysing this "Freeze frame data" with the M.U.T.-III, an effective troubleshooting can be performed.
The display items of freeze frame data are shown below.

DISPLAY ITEM LIST
Item No.
 Date Item
 Unit·Condition
2
 Ignition cycle
 -
4
 Accumulated minute*1
 min
500*2
 Air flow sensor
 g/s
501*2
 Throttle position sensor (main)
 %
507*2
 Target EGR valve
 %
508*2
 Barometric pressure sensor
 kPa
509*2
 Relative throttle position sensor
 %
511*2
 Accelerator pedal position sensor (main)
 %
512*2
 Accelerator pedal position sensor (sub)
 %
516*2
 Engine coolant temperature sensor
 °C
525*2
 Manifold absolute pressure sensor
 kPa
526*2
 Crank angle sensor
 r/min
527*2
 Vehicle speed
 km/h
529*2
 Intake air temperature sensor
 °C
530*2
 Time since engine running*3
 sec
537*2
 Power supply voltage
 V
541*2
 Throttle valve control servo
 %
560*2
 Rail pressure sensor
 kPa
573*2
 EGR error
 %
note *1: Accumulated time of current malfunction from time point when malfunction is detected.
note *2: The items can be seen by selecting "Freeze Frame Data (OBD)" on Self-diagnosis Screen of MUT-III. The Freeze Frame Data can be stored per malfunction. In case of more than one malfunction, only the first detected malfunction can be stored. The priority order for storing data is specified. In spite of the detection order, higher priority data should be preceded. The highest priority data are for malfunctions related to the fuel system, and the next ones are for malfunctions related to the warning lamp.
note *3: Time between engine start and malfunction detection.

FAIL-SAFE AND BACKUP FUNCTION


The control is carried out, which keeps the safety driving by the preset control logic when the diagnosis code is set. The diagnosis code having the fail-safe function is as follows.

List of fail-safe and backup function items
Code No.
 Diagnosis item
 Control contents during malfunction
P0003
 Suction control valve open
  • The rail pressure is controlled in the range between 50 and 100 MPa.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is controlled.
  • The throttle valve is closed. (Fixed opening degree)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0004
 Suction control valve battery short
  • The rail pressure is controlled in the range between 50 and 100 MPa.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The throttle valve is closed. (Fixed opening degree)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0016
 Crank angle sensor/camshaft position sensor phase problem
  • The engine is stopped. (The fuel injection and pump pressure feed are stopped.)
P0047
 Variable geometry control solenoid valve circuit low input
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The turbocharger control is prohibited.
  • The AS&G control is prohibited.
P0048
 Variable geometry control solenoid valve circuit high input
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The turbocharger control is prohibited.
  • The AS&G control is prohibited.
P0072
 Intake air temperature sensor circuit low input
  • The intake air temperature is controlled to be 50°C.
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0073
 Intake air temperature sensor circuit high input
  • The intake air temperature is controlled to be 50°C.
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0088
 Common rail high pressure malfunction
  • The throttle valve is closed. (Fixed opening degree)
  • The rail pressure is controlled in the range between 50 and 60 MPa.
  • The DPF regeneration is prohibited.
  • The fuel injection amount is restricted. (Output restriction)
  • The EGR control is stopped (fully closed).
  • The open angle of the accelerator pedal is restricted.
  • The AS&G control is prohibited.
P0089
 Suction control valve stuck
  • The rail pressure is controlled in the range between 50 and 100 MPa.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The throttle valve is closed. (Fixed opening degree)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0093
 Fuel leak problem
  • The rail pressure is controlled to be 100 MPa or less.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The throttle valve is closed. (Fixed opening degree)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0102
 Air flow sensor circuit low input
  • The control is performed using the previous value.
  • The DPF regeneration is prohibited.
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The AS&G control is prohibited.
P0103
 Air flow sensor circuit high input
  • The control is performed using the previous value.
  • The DPF regeneration is prohibited.
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The AS&G control is prohibited.
P0106
 Manifold absolute pressure sensor range/performance problem
  • The pressure in the inlet manifold is controlled to be 100 kPa.
  • The EGR control is stopped (fully closed).
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The DPF regeneration is prohibited.
  • The throttle valve is opened. (Electrical discontinuity)
  • The AS&G control is prohibited.
P0107
 Manifold absolute pressure sensor circuit low input
  • The pressure in the inlet manifold is controlled to be 100 kPa.
  • The EGR control is stopped (fully closed).
  • The fuel injection amount is restricted. (Output restriction)
  • The turbocharger control is prohibited.
  • The open angle of the accelerator pedal is restricted.
  • The DPF regeneration is prohibited.
  • The throttle valve is opened. (Electrical discontinuity)
  • The AS&G control is prohibited.
P0108
 Manifold absolute pressure sensor circuit high input
  • The pressure in the inlet manifold is controlled to be 100 kPa.
  • The EGR control is stopped (fully closed).
  • The fuel injection amount is restricted. (Output restriction)
  • The turbocharger control is prohibited.
  • The open angle of the accelerator pedal is restricted.
  • The DPF regeneration is prohibited.
  • The throttle valve is opened (Electrical discontinuity)
  • The AS&G control is prohibited.
P0112
 EGR gas temperature sensor circuit low input
  • The intake air temperature is controlled to be 50°C.
  • The EGR control is stopped (fully closed).
  • The AS&G control is prohibited.
P0113
 EGR gas temperature sensor circuit high input
  • The intake air temperature is controlled to be 50°C.
  • The EGR control is stopped (fully closed).
  • The AS&G control is prohibited.
P0117
 Engine coolant temperature sensor circuit low input
  • The engine coolant temperature is controlled to be 80°C. (Start-up of -25°C)
  • The EGR control is stopped (fully closed).
  • The throttle valve is opened. (Electrical discontinuity)
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0118
 Engine coolant temperature sensor circuit high input
  • The engine coolant temperature is controlled to be 80°C. (Start-up of -25°C)
  • The EGR control is stopped (fully closed).
  • The throttle valve is opened. (Electrical discontinuity)
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0122
 Throttle position sensor circuit low input
  • The throttle valve is opened. (Electrical discontinuity)
  • The DPF regeneration is prohibited.
  • The EGR control is stopped (fully closed).
  • The AS&G control is prohibited.
P0123
 Throttle position sensor circuit high input
  • The throttle valve is opened. (Electrical discontinuity)
  • The DPF regeneration is prohibited.
  • The EGR control is stopped (fully closed).
  • The AS&G control is prohibited.
P0182
 Fuel temperature sensor circuit low input
  • The fuel temperature is controlled to be 45°C. (Start-up of -25°C)
  • The AS&G control is prohibited.
P0183
 Fuel temperature sensor circuit high input
  • The fuel temperature is controlled to be 45°C. (Start-up of -25°C)
  • The AS&G control is prohibited.
P0191
 Rail pressure sensor range/performance problem
  • The rail pressure is controlled in the range between 50 and 100 MPa.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The throttle valve is closed. (Fixed opening degree)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0192
 Rail pressure sensor circuit low input
  • The rail pressure is controlled in the range between 50 and 100 MPa.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The throttle valve is closed. (Fixed opening degree)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0193
 Rail pressure sensor circuit high input
  • The rail pressure is controlled in the range between 50 and 100 MPa.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The throttle valve is closed. (Fixed opening degree)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0201
 No. 1 injector circuit malfunction
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0202
 No. 2 injector circuit malfunction
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0203
 No. 3 injector circuit malfunction
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0204
 No. 4 injector circuit malfunction
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0219
 Engine over speed condition
  • The throttle valve is closed. (Fixed opening degree)
  • The engine is stopped. (The fuel injection and pump pressure feed are stopped.)
  • The DPF regeneration is prohibited.
P0299
 Turbocharger under boost condition
  • The fuel injection amount is restricted. (Output restriction)
  • The DPF regeneration is prohibited.
  • The EGR control is stopped (fully closed).
  • The open angle of the accelerator pedal is restricted.
  • The throttle valve is opened. (Electrical discontinuity)
  • The turbocharger control is prohibited.
  • The AS&G control is prohibited.
P0301
 No. 1 cylinder injector malfunction (No injection)
  • The DPF regeneration is prohibited.
  • The EGR control is stopped (fully closed).
  • The throttle valve is opened. (Electrical discontinuity)
  • The AS&G control is prohibited.
P0302
 No. 2 cylinder injector malfunction (No injection)
  • The DPF regeneration is prohibited.
  • The EGR control is stopped (fully closed).
  • The throttle valve is opened. (Electrical discontinuity)
  • The AS&G control is prohibited.
P0303
 No. 3 cylinder injector malfunction (No injection)
  • The DPF regeneration is prohibited.
  • The EGR control is stopped (fully closed).
  • The throttle valve is opened. (Electrical discontinuity)
  • The AS&G control is prohibited.
P0304
 No. 4 cylinder injector malfunction (No injection)
  • The DPF regeneration is prohibited.
  • The EGR control is stopped (fully closed).
  • The throttle valve is opened. (Electrical discontinuity)
  • The AS&G control is prohibited.
P0335
 Crank angle sensor system
  • The rail pressure is controlled in the range between 50 and 100 MPa.
  • The DPF regeneration is prohibited.
  • The fuel injection amount is restricted. (Output restriction)
  • The throttle valve is closed. (Fixed opening degree)
  • The EGR control is stopped (fully closed).
  • The open angle of the accelerator pedal is restricted.
  • The AS&G control is prohibited.
P0336
 Crank angle sensor range/performance problem
  • The rail pressure is controlled in the range between 50 and 100 MPa.
  • The DPF regeneration is prohibited.
  • The fuel injection amount is restricted. (Output restriction)
  • The throttle valve is closed. (Fixed opening degree)
  • The EGR control is stopped (fully closed).
  • The open angle of the accelerator pedal is restricted.
  • The AS&G control is prohibited.
P0340
 Camshaft position sensor system
  • The rail pressure is controlled in the range between 50 and 100 MPa.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The DPF regeneration is prohibited.
  • The throttle valve is closed. (Fixed opening degree)
  • The EGR control is stopped (fully closed).
  • The AS&G control is prohibited.
P0341
 Camshaft position sensor range/performance problem
  • The rail pressure is controlled in the range between 50 and 100 MPa.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The DPF regeneration is prohibited.
  • The throttle valve is closed. (Fixed opening degree)
  • The EGR control is stopped (fully closed).
  • The AS&G control is prohibited.
P0381
 Glow plug open/short malfunction
  • The EGR control is stopped (fully closed).
P0401
 EGR flow insufficient
  • The small injection quantity learning is prohibited.
  • The AS&G control is prohibited.
P0402
 EGR flow excessive
  • The small injection quantity learning is prohibited.
  • The DPF regeneration is prohibited.
  • The NPG/SPG control is stopped.
  • The EGR control is stopped (fully closed).
P0403
 EGR valve DC motor malfunction
  • The DPF regeneration is prohibited.
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The AS&G control is prohibited.
P0420
 Catalyst malfunction
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0427
 No. 2 exhaust gas temperature sensor (catalyst temperature) circuit low input
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0428
 No. 2 exhaust gas temperature sensor (catalyst temperature) circuit high input
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0489
 EGR valve position sensor circuit low input
  • The DPF regeneration is prohibited.
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The AS&G control is prohibited.
P0490
 EGR valve position sensor circuit high input
  • The DPF regeneration is prohibited.
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The AS&G control is prohibited.
P0500
 Vehicle speed signal system
  • The EGR control is stopped (fully closed).
  • The AS&G control is prohibited.
P0515
 Battery temperature sensor system
  • The AS&G control is prohibited.
P0545
 No. 1 exhaust gas temperature sensor (catalyst temperature) circuit low input
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0546
 No. 1 exhaust gas temperature sensor (catalyst temperature) circuit high input
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0602
 Variant coding system
  • The AS&G control is prohibited.
P0604
 Random access memory (RAM) malfunction
  • The engine is stopped (The fuel injection and pump pressure feed are stopped).
  • The DPF regeneration is prohibited.
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The AS&G control is prohibited.
P0605
 Read only memory (FLASH ROM) malfunction
  • The rail pressure is controlled in the range between 50 and 100 MPa.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The throttle valve is closed. (Fixed opening degree)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0606
 Engine-ECU (main CPU) malfunction
  • The rail pressure is controlled in the range between 50 and 100 MPa.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The throttle valve is closed. (Fixed opening degree)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0607
 Engine-ECU (sub CPU) malfunction
  • The rail pressure is controlled in the range between 50 and 100 MPa.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The throttle valve is closed. (Fixed opening degree)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P0620
 Alternator control circuit
  • Prohibits alternator output suppression control against current consumers (Operates as a normal alternator).
  • The auto stop is prohibited.
P0622
 Alternator FR terminal system
  • The AS&G control is prohibited.
P062F
 EEPROM malfunction
  • The EGR control is stopped (fully closed).
  • The AS&G control is prohibited.
P0630
 Chassis number not programmed
  • The AS&G control is prohibited.
P0638
 Throttle valve control servo stuck
  • The electrical continuity to the throttle valve control servo is discontinued.
  • The DPF regeneration is prohibited.
  • The EGR control is stopped (fully closed).
  • The AS&G control is prohibited.
P0642
 Analog sensor reference voltage No. 1 too low
  • The accelerator pedal opening is controlled to be 0 %.
  • The idle speed is 1,300 r/min.
  • The DPF regeneration is prohibited.
  • The EGR control is stopped (fully closed).
  • The throttle valve is opened. (Electrical discontinuity)
  • The AS&G control is prohibited.
P0643
 Analog sensor reference voltage No. 1 too high
  • The accelerator pedal opening is controlled to be 0 %.
  • The idle speed is 1,300 r/min.
  • The DPF regeneration is prohibited.
  • The EGR control is stopped (fully closed).
  • The throttle valve is opened. (Electrical discontinuity)
  • The AS&G control is prohibited.
P064C
 Glow control unit malfunction
  • The EGR control is stopped (fully closed).
P0652
 Analog sensor reference voltage No. 2 too low
  • The accelerator pedal opening is controlled to be 0 %.
  • The idle speed is 1,300 r/min.
  • The DPF regeneration is prohibited.
  • The EGR control is stopped (fully closed).
  • The throttle valve is opened. (Electrical discontinuity)
  • The AS&G control is prohibited.
P0653
 Analog sensor reference voltage No. 2 too high
  • The accelerator pedal opening is controlled to be 0 %.
  • The idle speed is 1,300 r/min.
  • The DPF regeneration is prohibited.
  • The EGR control is stopped (fully closed).
  • The throttle valve is opened. (Electrical discontinuity)
  • The AS&G control is prohibited.
P0683
 Glow control unit communication abnormality
  • The glow control is prohibited.
  • The EGR control is stopped (fully closed).
P1203
 Capacitor insufficient charging
  • The rail pressure is controlled in the range between 50 and 100 MPa.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P1204
 Capacitor excessive charging
  • The engine is stopped (The fuel injection and pump pressure feed are stopped).
  • The DPF regeneration is prohibited.
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The AS&G control is prohibited.
P1272
 Pressure limiter malfunction
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The throttle valve is opened. (Electrical discontinuity)
  • The AS&G control is prohibited.
P1273
 Supply pump insufficient flow
  • The rail pressure is controlled in the range between 50 and 60 MPa.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The throttle valve is closed (except the driving conditions that the fuel pressure exceeds the seizure resistance). (Fixed opening degree)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P1274
 Supply pump protection
  • The rail pressure is controlled in the range between 50 and 60 MPa.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The throttle valve is opened. (Electrical discontinuity)
  • The AS&G control is prohibited.
P1275
 Supply pump exchange
  • The rail pressure is controlled in the range between 50 and 60 MPa.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The throttle valve is closed (except the driving conditions that the fuel pressure exceeds the seizure resistance). (Fixed opening degree)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P1298
 Variable geometry turbocharger control system malfunction (high pressure)
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The turbocharger control is prohibited.
  • The AS&G control is prohibited.
P1299
 Variable geometry turbocharger control system malfunction (low pressure)
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The turbocharger control is prohibited.
  • The AS&G control is prohibited.
P1427
 No. 3 exhaust gas temperature sensor (DPF temperature) circuit low input
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P1428
 No. 3 exhaust gas temperature sensor (DPF temperature) circuit high input
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P1497
 DPF system malfunction
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P1498
 Excessive PM accumulated in DPF
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The AS&G control is prohibited.
P1499
 Abnormally high DPF temperature
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The AS&G control is prohibited.
P1608
 Battery current sensor system
  • The AS&G control is prohibited.
P1625
 Injection quantity compensation value error
  • The rail pressure is controlled in the range between 50 and 100 MPa.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The throttle valve is opened. (Electrical discontinuity)
  • The AS&G control is prohibited.
P1626
 Injection quantity compensation value not coding
  • The rail pressure is controlled in the range between 50 and 100 MPa.
  • The fuel injection amount is restricted. (Output restriction)
  • The open angle of the accelerator pedal is restricted.
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The throttle valve is opened. (Electrical discontinuity)
  • The AS&G control is prohibited.
P2118
 Throttle valve control DC motor current malfunction
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P2122
 Accelerator pedal position sensor (main) circuit low input
  • The amount of depression of the accelerator pedal is detected, using the accelerator pedal position sensor (sub) signal, which is calculated by taking half of the normal value.
P2123
 Accelerator pedal position sensor (main) circuit high input
  • The amount of depression of the accelerator pedal is detected, using the accelerator pedal position sensor (sub) signal, which is calculated by taking half of the normal value.
P2124
 Accelerator pedal position sensor (main) circuit high input intermittent
  • The amount of depression of the accelerator pedal is detected, using the accelerator pedal position sensor (sub) signal, which is calculated by taking half of the normal value.
P2127
 Accelerator pedal position sensor (sub) circuit low input
  • The amount of depression of the accelerator pedal is detected with using the accelerator pedal position sensor (main) signal, which is calculated by taking half of the normal value.
P2128
 Accelerator pedal position sensor (sub) circuit high input
  • The amount of depression of the accelerator pedal is detected, using the accelerator pedal position sensor (main) signal, which is calculated by taking half of the normal value.
P2138
 Accelerator pedal position sensor (main and sub) range/performance problem
  • The accelerator pedal opening is controlled to be 0 %.
  • The idle speed is 1,300 r/min. (Both of the main and substitute APSs are failed or their characteristics are abnormal.)
P2146
 Injector common 1 (cylinder No. 1and No. 4) circuit open
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P2147
 Injector common 1 (cylinder No. 1and No. 4) circuit earth short
  • The engine is stopped (The fuel injection and pump pressure feed are stopped).
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P2148
 Injector common 1 (cylinder No. 1and No. 4) circuit battery short
  • The engine is stopped (The fuel injection and pump pressure feed are stopped).
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P2149
 Injector common 2 (cylinder No. 2 and No. 3) circuit open
  • The EGR control is stopped (fully closed).
  • The throttle valve is opened. (Electrical discontinuity)
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P2150
 Injector common 2 (cylinder No. 2 and No. 3) circuit earth short
  • The engine is stopped (The fuel injection and pump pressure feed are stopped).
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P2151
 Injector common 2 (cylinder No. 2 and No. 3) circuit battery short
  • The engine is stopped (The fuel injection and pump pressure feed are stopped).
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P2228
 Barometric pressure sensor circuit low input
  • The EGR control is stopped (fully closed).
  • The throttle valve is opened. (Electrical discontinuity)
  • The DPF regeneration is prohibited.
  • The turbocharger control is prohibited.
  • The AS&G control is prohibited.
P2229
 Barometric pressure sensor circuit high input
  • The EGR control is stopped (fully closed).
  • The throttle valve is opened. (Electrical discontinuity)
  • The DPF regeneration is prohibited.
  • The turbocharger control is prohibited.
  • The AS&G control is prohibited.
P2413
 EGR system performance
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The throttle valve is opened. (Electrical discontinuity)
  • The AS&G control is prohibited.
  • The NPG/SPG control is stopped.
  • The small injection quantity learning is prohibited.
P2426
 EGR cooling valve control circuit (Low)
  • The EGR control is stopped (fully closed).
P2427
 EGR cooling valve control circuit (High)
  • The EGR control is stopped (fully closed).
P244A
 DPF differential pressure too low
  • The DPF regeneration is prohibited.
P2454
 Exhaust differential pressure sensor circuit low input
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P2455
 Exhaust differential pressure sensor circuit high input
  • The throttle valve is opened. (Electrical discontinuity)
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.
P2463
 No chance of forcible regeneration of DPF
  • The EGR control is stopped (fully closed).
  • The cruise control is prohibited.
  • The fuel injection amount is restricted (Output restriction).
  • The open angle of the accelerator pedal is restricted.
  • The AS&G control is prohibited.
P252F
 Engine oil level malfunction
  • The DPF regeneration is prohibited.