P0638
P0638Throttle valve adjusting unit faulty
NOTE:
When a fault is detected, the system is in stand-by operation mode in pedal sensor, i.e.:
- Maximum pedal value is limited to 30 %.
- Dynamism is limited.
Diagnostic conditions
- Supply voltage > 10 V
- Time after ignition on > 30 s
- Engine not running
- Vehicle is stationary
- Engine temperature 5 °C ... 100 °C
- Intake air temperature > 5 °C
- Pedal value < 0.8 %
Possible fault causes
- Throttle valve adjusting unit faulty