Chassis, generic

C05F5 4WD/AWD Range Actuator Control Circuit/Open

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

The range actuator is the electric gear motor that moves the transfer case between high range, neutral and low range. With this code the controller finds no usable current path in the motor drive circuit, usually an open winding, wire or connector. Automotive H-bridge drivers such as the TI DRV8873-Q1 run a dedicated open-load test besides short and overcurrent checks. Stellantis uses its own code C140A-13 for an open shift motor drive in bulletin 08-237-23 for 2023 Ram 1500 trucks, caused by an unseated shift motor connector; Ford asks in SSM 48300 for Super Duty trucks to check loose pins, contamination and broken wires before replacing a shift motor. No maker documents C05F5 itself. With the circuit open, range shifts are impossible.

Likely causes

Shift motor connector not fully seated or corroded
Broken wire between control module and motor
Open motor winding or worn brushes in the range actuator
Failed output stage in the control module

Symptoms

  • 4WD service message, low range cannot be selected
  • Range indicator flashes or does not change
  • Transfer case stays in its last position

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€50–900
Time0.5–3 h

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

Parts involved

range actuatortransfer case control module

Related codes

C05F6C05F7C05F8C05FA

References: ti.com, static.nhtsa.gov, static.nhtsa.gov.