C0122moderate severityChassis
Electronic Parking Brake Switch Circuit
on 2016 Hyundai Tucson 2.4L I4 · AWD
What this code means
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.
Other Chassis codes on this vehicle
C0021
LF Wheel Speed Sensor Range/Performance
C0021
LF Wheel Speed Sensor Range/Performance
C0022
RF Wheel Speed Sensor Range/Performance
C0022
RF Wheel Speed Sensor Range/Performance
C0023
LR Wheel Speed Sensor Range/Performance
C0023
LR Wheel Speed Sensor Range/Performance
C0024
RR Wheel Speed Sensor Range/Performance
C0024
RR Wheel Speed Sensor Range/Performance
C0025
LF Wheel Speed Sensor Circuit Intermittent
C0025
LF Wheel Speed Sensor Circuit Intermittent