Powertrain, generic · Transmission

P0929 Gear Shift Lock Solenoid/Actuator Control Circuit A Range/Performance

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

Set when the shift lock actuator on circuit A is electrically present but does not respond as commanded, for example it fails to reach the locked or released position. Ford stores it in the gear shift module (GSM): SSM 51057 and 53039 list P0929:77 (commanded position not reachable) on Mach-E, Escape, Bronco Sport, Maverick and Transit, fixed by GSM software or replacement; TSB 25-2045 adds P0929:00, :07 and :9A on 2021-24 F-150 together with a selector that will not leave or enter Park, and checks pin 3 of connector C211. Ford shows the wrench lamp, not the MIL. P0928, P0930 and P0931 are the pure electrical faults of circuit A, P092B the same fault on circuit B.

Likely causes

Gear shift module software that misjudges the actuator position (Ford reprogramming bulletins)
Worn or binding lock actuator inside the shifter assembly
Poor pin fit or damaged pin at the shifter connector

Symptoms

  • Wrench or transmission warning lamp on
  • Selector will not leave Park or will not go back into Park
  • Clicking from the shifter or a selector that does not stow or unstow

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–900
Time0.5–1.5 h

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

Parts involved

gear shift lock solenoid agear shift modulewiring harnesstcm

Related codes

P0928P0930P0931P092B

References: static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov.