Electronic Parking Brake Switch Circuit
2014-2016 Tesla Model S P85D Dual Motor AWD 🇷🇺
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
Tesla Cybertruck
2024-2024 Cyberbeast Tri Motor AWD
Tesla Cybertruck
2024-2024 Dual Motor AWD
Tesla Cybertruck
2024-2024 Single Motor RWD
Tesla Model 3
2017-2020 Long Range Dual Motor AWD
Tesla Model 3
2017-2020 Performance Dual Motor AWD
Tesla Model 3
2017-2020 Standard Range Plus Single Motor RWD
Tesla Model 3
2021-2024 Long Range Dual Motor AWD
Tesla Model 3
2021-2024 Performance Dual Motor AWD
Common Questions
What does code C0122 mean on a 2014-2016 Tesla Model S?
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 Tesla Model S?
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 2014-2016 Tesla Model S?
Common causes of C0122 include: Faulty EPB switch, Switch connector corroded, Wiring damage, Switch not returning to neutral position.