OBD-II code · Network
U0155 Lost Communication with Instrument Panel Cluster
CAN messages from or to the instrument cluster are missing. The cluster is the user-facing interface — speedometer, tachometer, warning lamps, fuel level, odometer — so failure is immediately visible. On some cars warning lamps from other modules can no longer illuminate either.
Is it safe to drive with U0155?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyCluster unpowered or fuse blown
- PossibleCluster internal failure (common on aged TFTs)
- 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
- 1–5 h
- Emissions test
- Usually unaffected
- Parts involved
- Instrument Cluster, Can Bus Wiring
Related codes
- U0152Lost Communication with Side Restraints Control Module Left
- U0153Lost Communication with Restraints Control Module B
- U0154Lost Communication with Restraints Occupant Sensing Module
- U0156Lost Communication with Information Center "A"
- U0157Lost Communication with Personalization Control Module
- U0158Lost Communication with Head Up Display
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.