Network
generic / SAE
U025B
Lost Communication With Special Purpose Vehicle Control Module C
The vehicle bus reports loss of communication with special-purpose vehicle (SPV) control module C. Upfit functions like emergency lighting, sirens, fleet relays or PTO/auxiliary systems controlled by this node stop responding.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number2 / 5B
Possible causes
- Bus wiring open or shorted high
- Module without power or ground medium
- Module failed medium
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 c
- Component: vehicle bus wiring
- drive cycle required
Sources
References
sae:J2012