OBD-II code · Network
U013C Lost Communication With Accelerator Pedal Module
ECU lost CAN communication with the accelerator pedal module. Throttle response severely affected. 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 U013C?
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
- 0.5–4 h
- Emissions test
- Likely to fail
- Parts involved
- Accelerator Pedal Module, Can Bus
Related codes
- U0137Lost Communication with Trailer Brake Control Module
- U0138Lost Communication with All Terrain Control Module
- U0139Lost Communication with Active Roll Control Module
- U013DLost Communication With Vacuum Sensor A
- U013ELost Communication With Vacuum Sensor B
- U013FLost Communication With Pedestrian Alert Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.