Network
generic or reserved
U3508
Control Module Input Power C Circuit Range/Performance
Input power line A voltage is electrically within range but does not match expected behavior — drift, slow rise/fall, or instability.
SystemNetwork
Typegeneric or reserved
GroupU3
Range / number5 / 08
Possible causes
- High resistance in supply path high
- Gateway module routing CAN messages incorrectly low
- CAN terminating resistor (120 Ω) drifted out of spec 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: possible
- Estimated cost: 30–400 €
- Estimated time: 0.5–2 h
- Component: module power c
- Component: power wiring
- MIL / check engine light
Sources
References
sae:J2012