DTC P0638:00: Notes
DTC DETECTING CONDITION REFERENCE CHART
| DTC P0638:00 |
Throttle valve actuator control circuit range/performance problem |
| DETECTION CONDITION |
- The PCM compares the actual TP with the target TP when the engine is running. If the difference is more than the specification, the PCM determines that there is a throttle valve actuator control circuit range/performance problem.
Diagnostic support note
- This is a continuous monitor (CCM).
- The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle.
- FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
- The DTC is stored in the PCM memory.
|
| POSSIBLE CAUSE |
- Throttle valve actuator malfunction
- PCM malfunction
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