OBD-II code · Network
U055C Invalid Data Received From Special Purpose Vehicle Control Module C
A receiving module detected implausible data from special-purpose vehicle (SPV) control module C. Upfit function (emergency lighting, sirens, fleet relays, PTO/auxiliary) status values fail plausibility checks and are rejected.
Is it safe to drive with U055C?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyModule internal fault or sensor input drift
- PossibleSoftware version mismatch after replacement
- 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
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–4 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Special Purpose Vehicle Module C
Related codes
- U055AInvalid Data Received From Special Purpose Vehicle Control Module A
- U055BInvalid Data Received From Special Purpose Vehicle Control Module B
- U055DInvalid Data Received From Special Purpose Vehicle Control Module D
- U0559Invalid Data Received From Radio Transceiver
- U055EInvalid Data Received From Front Controls Interface Module B
- U055FInvalid Data Received From Electronic Brake Booster Control Module A
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.