OBD-II code · Network
U0135 Lost Communication with Parking Brake Control Module
The vehicle network has lost the electric parking brake (EPB) controller. Auto-hold is disabled, the EPB warning lamp comes on. EPB cannot be released electrically.
Is it safe to drive with U0135?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyEPB module unpowered
- PossibleCAN wiring to EPB damaged
- Less likelyGateway 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
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Epb Module, Can Bus Wiring
Related codes
- U0132Lost Communication with Ride Level Control Module
- U0133Lost Communication with Yaw Rate Sensor Module
- U0134Lost Communication with Restraints System Sensor (Side Sensor)
- U0136Lost Communication with Park Brake Module B
- U0137Lost Communication with Trailer Brake Control Module
- U0138Lost Communication with All Terrain Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.