OBD-II code · Network (extended)
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.
Is it safe to drive with U3001?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyPower supply lost before shutdown completed
- PossibleBad ground connection
- 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
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Control Module, Module Power Supply
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.