C0123high severityChassis
Electronic Parking Brake Control Module
on 2011 Cadillac Escalade 6.2L V8 · 4WD
What this code means
Internal fault in the electronic parking brake control module.
Symptoms
- EPB warning light on
- EPB functions inoperative
- Hill-hold not working
- Auto-hold not functioning
Common causes
- EPB module internal failure
- Module software corruption
- Power supply issue to module
- CAN communication fault to module
Diagnostic steps
- Check module power supply and ground
- Scan for CAN communication codes
- Attempt module reset
- Check for software updates
- Test module inputs and outputs
Repair notes
Replace EPB control module. Requires programming and calibration.
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