Network
generic / SAE
U055B
Invalid Data Received From Special Purpose Vehicle Control Module B
A receiving module detected implausible data from special-purpose vehicle (SPV) control module B. Upfit function (emergency lighting, sirens, fleet relays, PTO/auxiliary) status values fail plausibility checks and are rejected.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number5 / 5B
Possible causes
- Module internal fault or sensor input drift high
- Software version mismatch after replacement medium
- Gateway module routing CAN messages incorrectly low
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
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 100–1500 €
- Estimated time: 0.5–4 h
- Component: special purpose vehicle module b
- drive cycle required
Sources
References
sae:J2012