Electronic Parking Brake Switch Circuit
2016-2016 Ford Explorer 3.5L V6 EcoBoost
The 2016 Ford Explorer is equipped with a 3.5L V6 turbocharged gasoline engine. Below you'll find detailed c0122 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Malfunction in the EPB apply/release switch on the console or dashboard.
Symptoms
- EPB warning light
- Cannot apply or release parking brake
- Parking brake stuck in current state
Common Causes
- Faulty EPB switch
- Switch connector corroded
- Wiring damage
- Switch not returning to neutral position
Diagnostic Steps
- Test EPB switch with multimeter
- Check connector and wiring
- Monitor switch signal with scan tool
- Inspect switch for physical damage
Repair Notes
Replace EPB switch assembly.
Related Codes
Other Chassis Codes
- C0021LF Wheel Speed Sensor Range/Performance
- C0022RF Wheel Speed Sensor Range/Performance
- C0023LR Wheel Speed Sensor Range/Performance
- C0024RR Wheel Speed Sensor Range/Performance
- C0025LF Wheel Speed Sensor Circuit Intermittent
- C0026RF Wheel Speed Sensor Circuit Intermittent
- C0027LR Wheel Speed Sensor Circuit Intermittent
- C0028RR Wheel Speed Sensor Circuit Intermittent
- C0035Left Front Wheel Speed Sensor Circuit
- C0036Left Front Wheel Speed Signal Erratic
C0122 on Other Vehicles
Common Questions
What does code C0122 mean on a 2016-2016 Ford Explorer?
C0122 stands for "Electronic Parking Brake Switch Circuit". Malfunction in the EPB apply/release switch on the console or dashboard.
What are the symptoms of C0122 on a Ford Explorer?
Common symptoms of C0122 include: EPB warning light, Cannot apply or release parking brake, Parking brake stuck in current state.
What causes C0122 on a 2016-2016 Ford Explorer?
Common causes of C0122 include: Faulty EPB switch, Switch connector corroded, Wiring damage, Switch not returning to neutral position.
Last updated: March 2026
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