Electric Parking Brake Control Module Fault
There's a problem with the electric parking brake control module.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The computer is detecting a failure in the electric parking brake system, meaning your brakes might not engage or release as they should.
What the computer is actually seeing
The control module monitors the position of the parking brake actuator and the status of the brake switch. It expects a specific voltage reading; if it falls below 0.5 volts or above 4.5 volts when the brake is engaged or disengaged, it triggers the code.
What a healthy reading looks like
Voltage from the parking brake actuator should be between 0.5 and 4.5 volts while in operation; otherwise, a fault is logged.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check the wiring and connectors for the parking brake module; look for signs of corrosion or damage. If found, repair or replace as necessary. DECISION: Are the wiring and connectors okay? YES: Proceed to step 2. NO: Repair wiring/connectors.
- 22. Inspect the parking brake actuator. Use a multimeter to check the voltage while engaging/disengaging the parking brake. DECISION: Is the voltage within 0.5 to 4.5 volts? YES: Go to step 3. NO: Replace the parking brake actuator.
- 33. Test the electric parking brake control module by monitoring its response during operation. If it’s unresponsive or shows faulty readings, replace the module. DECISION: Is the control module operational? YES: No further action needed. NO: Replace the control module.
Common causes
- Corroded or damaged wiring to the electric parking brake module
- Faulty electric parking brake control module
- Defective parking brake actuator
- Loose or damaged connectors at the brake module
Typical repair cost
$$-$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Driving with this code can be risky since the parking brake may fail to engage, especially on inclines.
Will this code come back after resetting it?
Yes, if the underlying issue isn't repaired, the code will likely return after a reset.
Why does this code sometimes pair with other codes?
This can happen if multiple components in the parking brake system are failing or if there's a common wiring issue.
Working a real vehicle right now?
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