DTC P0643 is set when the voltage above 5.75V - maximum voltage of sensor power supply from PCM is detected. This code is due to the short to battery in sensor power circuit or the voltage problem inside of PCM.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Electricalal check | 1. Sensor power supply A circuit 2. PCM component |
Enable Conditions |
•
Battery 11V ~ 16V | |
Threshold Value |
•
Reference voltage(5V) is higher than 5.75V | |
Diagnostic Time |
•
Continuous | |
MIL ON Condition |
•
2 driving cycles |
