Chassis, generic

C00A7 4WD/AWD Transfer Case Unit Actuator Position Sensor A

Check engine lightOn
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

Position sensor A reports where the transfer case actuator, and thus the range or mode mechanism, currently stands. Magna patents a linear Hall sensor bolted from outside into the case, reading a stepped sector plate (four positions over about 60 degrees) or a plate on the range fork, with a duty-cycle output. Stellantis uses C00A7-13, circuit open: TSB 08-237-23 (2023 Ram 1500) and 08-239-23 (2023 Wagoneer models from a nine-day June 2023 build window, later superseded by 08-122-24) list it with C00A8-13 and other transfer case codes, an illuminated MIL and a 4WD Service light; the cause is a transfer case shift motor connector not fully seated, fixed by a push-pull-push check. Ford's SSM 52152 lists C00A7:11 and :13 on Explorer/Aviator, traced to a chafed harness at the actuator motor.

Likely causes

Transfer case shift motor connector not fully seated (Stellantis 2023)
Harness chafed where it routes to the actuator motor (Ford)
Position sensor A in the actuator failed

Symptoms

  • MIL on (Stellantis) or wrench indicator (Ford)
  • 4WD Service light or 4WD Fault Service Required message
  • 4WD modes cannot be selected

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€40–900
Time0.3–3 h

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

Parts involved

transfer case actuator pos a

Related codes

C00A8C00A6C00A5U0403

References: static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov, patents.google.com.