Powertrain, generic (extended)

P271D Park Pawl Position Sensor B Circuit High

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

P271D is logged when the signal of park pawl position sensor B sits above its upper limit. Electrically this is the mirror image of P271C: an interrupted sensor ground, an open signal line pulled up inside the controller, or contact with a supply wire. No manufacturer documents P271D publicly, so neither thresholds nor debounce times are known; Ford's recall 26V688 for the park module of the HF55 hybrid transmission is the only published case in this sensor family and involves sensor A. Because the pawl decides whether the car can roll away, controllers treat any doubt about its position conservatively. Expect a shift system warning and checks of wiring and connector at the actuator before the module itself is replaced.

Likely causes

Open ground or signal wire of sensor B
Signal shorted to a voltage source
Moisture or corrosion in the actuator connector
Failed position sensor B

Symptoms

  • Shift system warning on the display
  • Park function restricted

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–1,500
Time1–4 h

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

Parts involved

park pawl position sensor bwiring harness

Related codes

P271CP271BP271AP272C

References: law.cornell.edu, en.wikipedia.org, static.nhtsa.gov.