Network
generic or reserved
U3000
Control Module
Generic fault on the control module itself — internal self-diagnostic flagged a problem with computation, memory, drivers or other internal subsystems.
SystemNetwork
Typegeneric or reserved
GroupU3
Range / number– / 00
Possible causes
- Module internal fault 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: hard
- DIY: shop recommended
- Estimated cost: 300–2500 €
- Estimated time: 1–5 h
- Component: control module
- MIL / check engine light
- emissions-relevant
- limp mode possible
Sources
References
sae:J2012