Powertrain, generic · Transmission

P081C Park Input Circuit

Check engine lightOn
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P081C concerns the input 'park position' – the P contact of the selector or shift module, or the park pawl feedback – which controls switching off the ignition, key release, starter release and the 'not in park' warning. It is documented on the 2017–22 Jeep Compass with the nine-speed automatic: a 2022 bulletin lists P081C with the MIL on, with 'Vehicle not in Park' shown although P is engaged; the car cannot be switched off, modules stay awake and the battery drains. The cause was shift module software, fixed by reflashing. The check is a circuit or plausibility test of the P signal against the range sensor; no thresholds are published.

Likely causes

Shift module software (Jeep Compass)
P contact or selector switch faulty or misadjusted
Selector cable misadjusted
Wire or connector

Symptoms

  • 'Not in park' message although P is engaged
  • Ignition cannot be switched off, battery drains
  • Check engine lamp (Jeep)

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–450
Time0.5–2 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

park position switchelectronic shift moduleswitch wiring

Related codes

P081DP0850P0814P0817P0705

References: static.nhtsa.gov, static.nhtsa.gov, law.cornell.edu.