U3001Control Module Improper Shutdown Performance
- Generic OBD-II code · Network
- How the car detects it
- U3001 tells you that a module did not finish its orderly power-down: supply vanished or dipped before it had closed its tasks and saved its data, so it notes the abrupt end at the next start. Low voltage is the usual trigger. Audi found U300100 static in the engine computer of 2019 A6, A7, A8 and Q8 3.0 TFSI models after a low-voltage event, with the check engine light on and sometimes a no-start, and released new ECM software. Volkswagen saw the same entry in the engine module of 2018–2020 Tiguan, Passat and Beetle after battery work and clears it by switching transport mode on and off. Ford pairs U3001:68 or :89 with U3000:96 in the F-150 steering module (SSM 51226) when voltage is too low at start-up, which costs steering assist until voltage recovers.
- What you may notice
- Stored code found during service, often with no complaint
- Check engine light on and occasionally a no-start when the engine computer stores it
- Missing steering assist right after start-up when the steering module stores it
- Likely causes
- LikelyDischarged battery, battery swap or jump start cutting power mid-shutdown
- PossibleModule software that logs the event too readily and needs an update
- PossibleLoose feed, ground or fuse contact dropping out after key-off
- RareMain or power-hold relay opening before the module is done
- Repair
- Medium · Often possible to do yourself.Typical cost: €0 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.