Code No. P2229: Barometric Pressure Sensor Circuit High Input

FUNCTION

• The barometric pressure sensor converts the barometric pressure into a voltage signal and inputs the signal to the engine-ECU.
  
• In response to the signal, the engine-ECU corrects the fuel injection amount, etc.
  

TROUBLE JUDGMENT

• Battery positive voltage is 8 - 16 V
  
• 2 seconds later after the ignition switch has been in "ON" position or the engine has started up
  

• The barometric pressure sensor output voltage is 4.80 V or more.
  

FAIL-SAFE AND BACKUP FUNCTION

• 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.
  

PROBABLE CAUSE

• Failed barometric pressure sensor
  

	Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).

	Replace the engine-ECU.