The clutch learn procedure was never completed or was interrupted after a module replacement or software update.; A weak or failing battery caused the learned values to be lost or the learn routine to abort.; The clutch actuator motor or solenoid is sticking or has an open or shorted circuit.; The clutch position sensor is faulty or its signal is out of range, preventing a successful learn.; Mechanical binding in the clutch pack or differential keeps the clutch from reaching its learned endpoints.; A faulty all-wheel-drive control module has corrupted memory or cannot store learned values.; Wiring damage, corrosion, or poor grounds in the all-wheel-drive clutch circuit cause intermittent signal loss during the learn.

DTC codes / C05xx · Brakes, steering and suspension / C05E5

C05E54WD/AWD Clutch A Position Not Learned

Q: What does code C05E5 mean?

4WD/AWD Clutch A Position Not Learned. This code means the all-wheel-drive or four-wheel-drive control module has not successfully completed the learn procedure for the position of clutch A, which is the clutch that engages or varies torque to the secondary axle. The module detects that its stored position values are missing, invalid, or outside the expected range, so it cannot reliably command clutch A.

This code means the all-wheel-drive or four-wheel-drive control module has not successfully completed the learn procedure for the position of clutch A, which is the clutch that engages or varies torque to the secondary axle. The module detects that its stored position values are missing, invalid, or outside the expected range, so it cannot reliably command clutch A.

SystemChassis

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaBrakes, steering and suspension

Symptoms you may notice

The all-wheel-drive or four-wheel-drive warning light is illuminated, often with no other symptoms.
The vehicle may default to front-wheel drive or a fixed torque split, reducing traction in low-grip conditions.
A slight binding or shudder may be felt during low-speed turns if the clutch is stuck partially engaged.
The driver may notice a message such as 'AWD system disabled' or '4WD service required' on the information display.
Acceleration from a stop on slippery surfaces may feel different because the rear or secondary axle is not being driven as intended.

Common causes, most likely first

The clutch learn procedure was never completed or was interrupted after a module replacement or software update.
A weak or failing battery caused the learned values to be lost or the learn routine to abort.
The clutch actuator motor or solenoid is sticking or has an open or shorted circuit.
The clutch position sensor is faulty or its signal is out of range, preventing a successful learn.
Mechanical binding in the clutch pack or differential keeps the clutch from reaching its learned endpoints.
A faulty all-wheel-drive control module has corrupted memory or cannot store learned values.
Wiring damage, corrosion, or poor grounds in the all-wheel-drive clutch circuit cause intermittent signal loss during the learn.

How to diagnose and fix it

Verify battery voltage and charge the battery fully before attempting any learn procedure, because low voltage aborts the routine.
Scan all modules for related codes and check live data for clutch A position and actuator command to confirm the fault is present.
Inspect the clutch actuator connector, wiring, and grounds for corrosion, chafing, or loose pins, and repair as needed.
Check the clutch position sensor signal through its full range while manually moving the actuator, if accessible, to confirm it reports smoothly.
Perform the manufacturer's clutch A position learn procedure with a capable scan tool on level ground and with the engine off or running as specified.
If the learn fails, remove and inspect the clutch actuator and clutch pack for binding, contamination, or wear, and replace faulty components.
After repair, clear codes, complete the learn, and road test in varying conditions to confirm the all-wheel-drive system engages correctly.

Why the clutch learn keeps failing

A very common cause is a battery that drops below the required voltage during the learn routine, so the module aborts and stores this code even though the hardware is fine.
Technicians often replace the all-wheel-drive module when the real problem is a binding clutch actuator that cannot reach its learned endpoints, so always command the actuator through its full travel first.
This code can be set by a software update or module replacement that erased the learned values, meaning no part is faulty and only a relearn is needed.
A failing wheel speed sensor or steering angle sensor can prevent the all-wheel-drive module from running the learn because it needs those inputs to be valid.
The code does not always mean the clutch is slipping; it only means the position was never learned, so diagnose the learn failure before condemning the clutch pack.

Can I keep driving with C05E5?

You can usually drive the vehicle, but the all-wheel-drive system may be disabled or stuck in a default mode, so avoid slippery surfaces, heavy towing, and aggressive launches until the fault is repaired. If you feel binding or shuddering in tight turns, have it inspected promptly to prevent clutch damage.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.