Electronic Parking Brake Control Module Malfunction
What does C0268 mean?
The C0268 code means the vehicle's onboard diagnostic system has detected: Electronic Parking Brake Control Module Malfunction. This is a critical severity code.
Common Symptoms
- Parking brake warning light on
- Electronic parking brake does not engage or release
- Parking brake button unresponsive
- Error message on dashboard
- Vehicle may roll on inclines
Probable Causes (Ranked by Likelihood)
- Electronic parking brake control module failure Very High
- Wiring issue between module and parking brake actuators High
- Parking brake switch or button fault Moderate
- Low battery voltage affecting module operation Moderate
- Module software corruption Low
Step-by-Step Diagnostic Procedure
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Scan for all DTCs in the parking brake module
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Check battery voltage -- electronic parking brakes require adequate power
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Test the parking brake switch operation with a scan tool
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Inspect wiring at the parking brake module connector
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Check for software updates or TSBs for the parking brake module
Frequently Asked Questions
What is an electronic parking brake?
An electronic parking brake replaces the traditional hand lever or foot pedal with a button. Electric motors at the rear brakes apply and release the parking brake calipers, controlled by a dedicated module.
My parking brake will not release -- what do I do?
First try cycling the ignition off and back on. If the brake still will not release, consult your owner's manual for the emergency mechanical release procedure. Most vehicles have a manual release mechanism.
Can a dead battery trap the parking brake?
Yes. If the battery dies while the electronic parking brake is engaged, you may not be able to release it electrically. Most vehicles have an emergency manual release -- check your owner's manual for the location and procedure.