Code No. P0501:
Vehicle Speed signal
DIAGNOSIS CONTENT
CAN signal for vehicle speed not valid
TROUBLE JUDGMENT
Check Condition
- Ignition switch: ON
- Vehicle is running.
Judgment Criterion
- This error is detected with a hardware-near detection of the vehicle speed sensor
signal for the specified time.
DIAGNOSIS CONTENT
Vehicle speed not valid with overrun
TROUBLE JUDGMENT
Check Conditions
- Ignition switch: ON
- Engine: overrun
Judgment Criterion
- The vehicle speed sensor signal in overrun is below the threshold for the specified
time.
DIAGNOSIS CONTENT
Vehicle speed not valid with injection mass and engine speed
TROUBLE JUDGMENT
Check Conditions
- Injection amount is above the threshold.
- The engine speed is above the threshold.
Judgment Criterion
- The vehicle speed is above the threshold for the specified time.
FAIL SAFE FUNCTION
- Vehicle speed is recognized as specified one.
- Auto-cruise control system is prohibited.
PROBABLE CAUSE
- Failed driving system
- Failed ABS-ECU <without ASC>
- Failed ASC-ECU <with ASC>