OBD-II code · Network
U011D Lost Communication With All Wheel Drive Control Module
ECU lost CAN communication with the AWD control module. AWD function may revert to FWD/RWD. A communication loss with this module breaks any function relying on its data — diagnostic tools may show 'no response' and dependent modules can fall into limp mode.
Is it safe to drive with U011D?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyModule unpowered
- Less likelyGateway module routing CAN messages incorrectly
- Less likelyCAN terminating resistor (120 Ω) drifted out of spec
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
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Awd Module, Can Bus
Related codes
- U011ALost Communication With Exhaust Gas Sensor Module A
- U011BLost Communication With Rocker Arm Control Module A
- U011CLost Communication With Rocker Arm Control Module B
- U011ELost Communication With Throttle Actuator B Control Module
- U011FLost Communication With V2X Module
- U0120Lost Communication with Starter/Generator Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.