Powertrain, generic · Transmission

P0931 Gear Shift Lock Solenoid/Actuator Control Circuit A High

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

The control module reads a voltage on shift lock circuit A that is higher than the commanded state allows. FCA documents the code directly: in recall 16V-249 the Jefferson North plant found 2016 Jeep Grand Cherokee (WK) vehicles with active or stored P0931-00 whose selector would not release from Park. The cause was a badly crimped terminal on the BTSI solenoid harness from shifter supplier GHSP; FCA replaced the gear selector and warned that losing the solenoid could leave the lever locked in Park or Neutral. So a poor connection, not only a short to battery, can show up as High. P0930 is the low, P0928 the open fault of circuit A; P092D is the high fault on circuit B.

Likely causes

Poorly crimped or loose terminal on the shift lock solenoid harness (FCA recall 16V-249)
Control wire shorted to a supply voltage
Open shift lock solenoid coil seen as high voltage by a low-side driver

Symptoms

  • Selector lever will not release from Park
  • Lever may lock in Park or Neutral unexpectedly after stopping
  • Fault comes and goes with vibration or temperature

Repair estimate

DifficultyMediumDIY possible
Parts and labour€40–700
Time0.5–2 h

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

Parts involved

gear shift lock solenoid awiring harnesstcm

Related codes

P0928P0929P0930P092DP0573

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