Chassis, generic

C05E1 4WD/AWD Clutch A Position Sensor Circuit Range/Performance

Check engine lightUsually off
EmissionsNot relevant
Drive cycleRequired
Limp modePossible

The clutch A position signal is electrically within limits but does not fit what the actuator should be doing, for instance it barely changes while the motor runs or jumps further than the gearing allows. Bosch's transfer-case clutch provides the data for such a cross-check: worm wheel position, motor speed and motor current are all measured, so a position that drifts away from the counted motor rotation stands out. Dana relates motor shaft position to the rise of motor current when the ball ramp starts to clamp. Causes are a loose sensor magnet, a slipping gear or a sensor drifting with temperature. No manufacturer documents C05E1; the plain circuit fault is C05E0.

Likely causes

Sensor magnet or target loose or misaligned
Position sensor drifting or degraded
Slipping or damaged actuator gearing

Symptoms

  • AWD warning, torque transfer to the secondary axle stopped
  • Fault often sets only after some driving

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€100–1,500
Time0.5–4 h

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

Parts involved

awd clutch a pos sensor

Related codes

C05E0C05E2C05E3C05E4C05E6

References: patents.google.com, patents.google.com.