DTC P081C-64: Park Input Circuit - Signal plausibility failure: Action
- Refer to appropriate electrical circuit wiring diagrams and check park input signal circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Check transmission control module for park signal failure diagnostic trouble codes. Check operation of signal - should be set (equal to vehicle supply voltage) when transmission in P and un-set (equal to vehicle ground) when transmission in R, N, D, S