U3012 Fault Code – Control Module Improper Wake-up Performance

Car Codes diagnostic trouble code

U3012Diagnostic priority

Control Module Improper Wake-up PerformanceDiagnostic contextPotentially applicable to OBD-II-compliant vehicles; confirm against vehicle VIN, model year and module.Vehicle applicabilityApplicability varies by vehicle, powertrain, model year and control module.

Code interpretation

What U3012 means

This code indicates Control Module Improper Wake-up Performance Its precise meaning depends on the reporting control module, complete failure-type suffix, model year, powertrain and software level.

Driver experience

Symptoms you may notice

A stored diagnostic trouble code or related system symptom.

Test, do not guess

Possible causes

Confirm the reporting module, circuit condition, power supply, wiring, component performance and software status.

Evidence-led checks

Recommended diagnostic route

Save the complete scan, confirm the full code and reporting module, then test using model-specific multi-brand technical information.

Capture the evidenceSave the complete all-module scan, code suffixes and freeze-frame data.
Prove the basicsTest battery condition, system voltage, power and grounds.
Identify the reporterConfirm the module that logged the code and check circuit integrity.
Compare live dataReview commanded and actual values under the conditions that set the code.
Test before replacingUse model-specific wiring diagrams, pin tests and technical information.
Verify the repairClear the code only after recording evidence, then confirm it does not return.

Vehicle fitment

Vehicle applicability

Ford Mustang Mach-E, Ford Ranger, Ford Bronco

Before clearing

Can the code be cleared?

Clearing a code without fixing the cause removes useful evidence and may only switch the warning off temporarily. Save the full scan first; a permanent or repeatedly returning code needs testing.

A DTC is evidence, not a parts order.

Confirm the suffix, reporting module, model, year, engine and live data before replacing a component.

Verified public evidence

Manufacturer and model coverage

8 public manufacturer records match this search. These records support applicability research but do not replace VIN-specific workshop information.

U3012Ford Bronco
BRONCO · 2025 · Multiple/unspecified

Some 2025 Bronco vehicles may exhibit an illuminated anti-lock brake system (ABS) warning indicator with diagnostic trouble code (DTC) U3012:68 stored in the ABS module. The vehicle may also exhibit…

Source

U3012Ford Bronco
BRONCO · 2025 · Multiple/unspecified

Some 2025 F-150/Expedition/Navigator/Bronco/Ranger vehicles may exhibit diagnostic trouble code (DTC) U3012:68 stored in the anti-lock brake system (ABS) module with a soft brake pedal following vehicle start-up with various brake…

Source

U3012Ford Bronco
BRONCO · 2025 · Multiple/unspecified

…s equipped with a 3.0L EcoBoost engine built on or before 18-June-2025 may exhibit an illuminated anti-lock brake system (ABS) warning indicator with diagnostic trouble code (DTC) U3012:68 stored in…

Source

U3012Ford Mustang Mach-E
MUSTANG MACH E · 2021 · Powertrain

Some 2021-2022 Mustang Mach-E, 2022 F-150 Lightning/e-Transit may experience diagnostic trouble codes (DTCs) P1A10 in the secondary on-board diagnostic module C (SOBDMC) and U3012 in the battery energy control module…

Source

U3012Ford Mustang Mach-E
MUSTANG MACH E · 2022 · Powertrain

Source

U3012Ford Ranger
RANGER · 2025 · Multiple/unspecified

Some 2025 Ranger vehicles may exhibit an illuminated anti-lock brake system (ABS) warning indicator with diagnostic trouble code (DTC) U3012:68 stored in the ABS module. The vehicle may also exhibit…

Source

U3012Ford Ranger
RANGER · 2025 · Multiple/unspecified

Source

U3012Ford Ranger
RANGER · 2025 · Multiple/unspecified

Source