Network
generic or reserved
U3015
Control Module Ground C
Fault on the third ground reference of the module. A communication loss with this module breaks any function relying on its data — diagnostic tools may show 'no response' and dependent modules can fall into limp mode.
SystemNetwork
Typegeneric or reserved
GroupU3
Range / number– / 15
Possible causes
- Ground stud corroded 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: easy
- DIY: possible
- Estimated cost: 10–200 €
- Estimated time: 0.3–1.5 h
- Component: module ground c
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012