C1167: EPB Released Switch Short to Ground
The C1167 code indicates that the Electronic Parking Brake (EPB) control module has detected a short to ground in the signal circuit of the actuator's 'Released' position switch. This prevents the module from verifying the brake release position, disabling the automatic release function and applying the parking brake as a safety measure.
1. Commonly Affected Makes
2. Most Common Causes
- Signal wire for the Released switch shorted to ground (chassis or ground wire)
- Damaged, corroded, or pushed-back terminals in the parking brake actuator connector
- Internal short circuit in the actuator's Released position switch
- Faulty EPB control module (rare)
3. Symptoms You Will Notice
- Parking brake warning light illuminated
- Automatic brake release feature inoperative
- Parking brake may remain engaged or apply unexpectedly
- Possible inability to release parking brake manually
4. Step-by-Step Diagnosis
Scan for related codes and check EPB system data
Visually inspect wiring and connector for damage or corrosion
Test the Released switch signal circuit for continuity to ground
Check actuator connector terminals for push-out or corrosion
If wiring and connector are OK, test the actuator internal switch
As a last resort, test/replace the EPB control module
5. Frequently Asked Questions
Is it safe to drive?▼
No, this is a high-severity issue. The parking brake may apply unexpectedly or fail to release, creating a safety hazard. Have the vehicle towed to a repair shop.
How much does it cost to fix?▼
Diagnosis typically costs $100-$150. Repair costs vary: wiring repair $150-$300, actuator replacement $400-$800, EPB module replacement $500-$1000.