What it means
A module reports a software version mismatch with the 4WD/AWD clutch control module — typically after replacing one of the modules without programming the new unit to match the rest of the network.
At a glance
- Usually lights the warning light of the system that lost communication
- The engine or gearbox may go into limp mode
How it works
The four-wheel-drive clutch control module manages engagement of the AWD or 4WD clutch and exchanges status and requests with other modules. This code sets when another module detects software or calibration from that clutch controller that does not match the vehicle network’s expected version.
Common causes
Most likely first.
- Module replaced without programming
- Wrong part number for the vehicle
- Gateway module routing CAN messages incorrectly
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
How to diagnose it
- Scan all modules and record freeze-frame data, noting whether the mismatch appeared after work on the AWD or 4WD system.
- Verify the clutch control module’s part and vehicle application, since a unit for another drivetrain or variant may report incompatible software.
- Inspect the module connector, power and ground, and network wiring for looseness, corrosion, water intrusion, or damage.
- Use a capable scan tool to compare the clutch controller’s software and calibration identification with the vehicle configuration.
- If the installed unit and wiring are correct, check gateway routing and network communication, then perform the vehicle-specific programming or configuration required.
Common fixes
- Reconnect the four-wheel-drive clutch control module connector or repair damaged wiring.
- Program or configure the clutch control module with software matching the vehicle’s drivetrain.
- Fit the correct application of clutch control module if the installed unit is for a different vehicle or drivetrain, then program it.
- Correct gateway routing or network faults disrupting communication with the clutch control module.
Can I keep driving?
The vehicle may lose or limit AWD/4WD clutch operation, so do not rely on four-wheel drive for traction while this fault is active. Avoid slippery or demanding conditions until the system is checked.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.