Network
generic or reserved
U3001
Control Module Improper Shutdown Performance
The control module did not complete its shutdown sequence cleanly — power was lost before housekeeping (saving learned values, freeze frames, adaptations) finished.
SystemNetwork
Typegeneric or reserved
GroupU3
Range / number– / 01
Possible causes
- Power supply lost before shutdown completed high
- Bad ground connection 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: medium
- DIY: possible
- Estimated cost: 50–500 €
- Estimated time: 0.5–3 h
- Component: control module
- Component: module power supply
- MIL / check engine light
Sources
References
sae:J2012