OBD-II code · Network
U012E Lost Communication With Camshaft Position Control Module
ECU lost CAN communication with camshaft position control module. The camshaft position sensor identifies which cylinder is on the compression stroke — without it the ECM cannot run sequential injection or coil-on-plug ignition correctly.
Is it safe to drive with U012E?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
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
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Cam Position Module, Can Bus
Related codes
- U012BLost Communication With Chassis Control Module B
- U012CLost Communication With Active Vibration Control Module
- U012DLost Communication With Generator A Control Module
- U012FLost Communication With Generator B Control Module
- U0130Lost Communication with Steering Effort Control Module B
- U0131Lost Communication with Power Steering Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.