OBD-II code · Network (extended)
U3008 Control Module Ground A
Control Module Ground A: the control module has detected this fault condition.
Is it safe to drive with U3008?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyGround stud corroded
- PossibleGround connection loose
- Less likelyGateway module routing CAN messages incorrectly
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
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Module Ground A, Ground Strap
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.