Network, generic (extended)

U3012 Control Module Improper Wake-up Performance

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

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.

Likely causes

Module software handling timed wake-ups incorrectly
Another module or add-on keeping the network awake or waking it repeatedly
Battery disconnected or supply lost while a wake-up was pending
Fault in a hard-wired wake-up line or its connector

Symptoms

  • 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

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€50–300
Time0.3–1.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

control modulewakeup circuit

Related codes

U3001U301AP06E4P24EFP2610

References: fordservicecontent.com, gsi.ext.gm.com, static.nhtsa.gov, static.nhtsa.gov.