U3012Control Module Improper Wake-up Performance
- Generic OBD-II code · Network
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- Some modules must wake themselves while the car is parked, for example to run engine-off tests or battery checks, and U3012 reports that this went wrong. Ford's 2023 diesel OBD summary describes the PCM monitor: the code sets if more than two wake-ups happen in the ten minutes before a scheduled alarm wake, or if a requested alarm wake is still missing ten minutes later. GM's 2016 Volt hybrid module checks at power-up whether a self wake-up requested at the last shutdown actually happened, Type A, one trip. In practice the cause is often software: Ford TSB 23-2077 reprograms PCM and TCM on 2022 Super Duty 6.7L trucks with MIL and U3012, and TSB 25-2245 reflashes the ABS module of 2025 F-150s storing U3012:68 with a soft pedal after start-up.
- What you may notice
- Check engine light on with no drivability concern
- ABS or brake warning and soft pedal right after start-up when the brake module stores it
- Likely causes
- LikelyModule software handling timed wake-ups incorrectly
- PossibleAnother module or add-on keeping the network awake or waking it repeatedly
- PossibleBattery disconnected or supply lost while a wake-up was pending
- RareFault in a hard-wired wake-up line or its connector
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €300
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.