Network
generic or reserved
U3008
Control Module Ground A
The control module detects a problem on its ground reference A — open ground, high resistance to chassis, or floating ground potential.
SystemNetwork
Typegeneric or reserved
GroupU3
Range / number– / 08
Possible causes
- Ground stud corroded high
- Ground connection loose 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: easy
- DIY: possible
- Estimated cost: 10–200 €
- Estimated time: 0.3–1.5 h
- Component: module ground a
- Component: ground strap
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012