OBD-II code · Network
U02BE Lost Communication With Trailer Backup Assist Control Module
The vehicle bus reports loss of communication with the trailer backup assist module. Steer-by-knob trailer reverse guidance, hitch angle sensing and trajectory planning are unavailable.
Is it safe to drive with U02BE?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyBus wiring open or shorted
- PossibleModule without power or ground
- PossibleModule failed
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
- 0.5–3 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Trailer Backup Assist Module, Vehicle Bus Wiring
Related codes
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- U02BCLost Communication With Localization and Mapping Module
- U02BDLost Communication With Night Vision Control Module
- U02BFLost Communication With Interior Lighting Control Module B
- U02C0Lost Communication With Active Radiator Air Flow Control Module A
- U02C1Lost Communication With Hybrid/EV Electronics Coolant Pump C
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.