U3012
Control Module Improper Wake-up Performance
The control module did not wake up cleanly from sleep mode — wake event timing or sequence outside spec.
The control module did not wake up cleanly from sleep mode — wake event timing or sequence outside spec.
Common causes
- high
Module internal fault
One of the most commonly reported causes for this code — check this first.
Typical part cost: $220-1650
- medium
Wake signal noise or glitch
A plausible cause — test and verify before replacing parts.
Typical part cost: $220-1650
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does U3012 mean?
U3012 means "Control Module Improper Wake-up Performance". It is a generic OBD-II code that points to a fault in the network / communication.
What are the most common causes of U3012?
module internal fault; wake signal noise or glitch; gateway module routing can messages incorrectly — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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