Chassis, generic

C05FD 4WD/AWD Range Actuator Position Sensor Circuit Low

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

The range actuator position signal sits below the lowest value an intact sensor can deliver. With a sensor powered from a reference supply this usually means the signal line is shorted to ground, the supply is missing or the sensor output has failed low. Fixed diagnostic bands are common for such position inputs; a Honda and Denso patent for a comparable shift range actuator treats any sensor voltage at or below 0.5 V as abnormal. Sensors with PWM output, as in Magna's transfer case design, show the same fault as a duty cycle stuck at the lower limit. GM bulletin PIP5098 points to a corroded ground terminal for the encoder motor channels on Colorado and Canyon. No maker documents C05FD itself; C05FE is the opposite case.

Likely causes

Signal wire shorted to ground
Missing sensor reference supply
Sensor output failed low

Symptoms

  • 4WD service message, range shifts disabled
  • Range indicator shows no valid 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 pos sensor

Related codes

C05FBC05FCC05FE

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