Code P065, Cruise Control Servo Position Sensor Failure: Action
WARNING: This page is about a different car, the 1995 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
PCM disables cruise control.
NOTE:
Test numbers refer to numbers on diagnostic chart.
- Checks if cruise control feedback is a value that it should never be even with servo fully released (0-2).
- Checks PCM and circuitry to cruise control servo are okay. Voltage reading should be 4.6-5.1 volts.
- Checks circuit No. 399 for an open.
- Checks circuit No. 398 for an open.
- Checks circuit No. 398 for short to ground. If wire is okay, PCM is open internally.
- Checks if cruise control servo is operating normally. If feedback is greater than 30, servo is operating correctly.