EPS Control Module Voltage High
2014-2016 Tesla Model S P85D Dual Motor AWD
Description
The EPS module supply voltage exceeds the maximum safe operating threshold.
Symptoms
- EPS warning light
- EPS assist may shut down
- Warning for electrical system
Common Causes
- Alternator overcharging
- Voltage regulator failure
- Jump-starting voltage spike
- Aftermarket charger connected while running
Diagnostic Steps
- Test charging system voltage (should be 13.5-14.7V)
- Check alternator voltage regulator
- Inspect for aftermarket electrical accessories
- Monitor system voltage under various loads
Repair Notes
Repair overcharging alternator. Replace voltage regulator.
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
C0222 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 C0222 mean on a 2014-2016 Tesla Model S?
C0222 stands for "EPS Control Module Voltage High". The EPS module supply voltage exceeds the maximum safe operating threshold.
What are the symptoms of C0222 on a Tesla Model S?
Common symptoms of C0222 include: EPS warning light, EPS assist may shut down, Warning for electrical system.
What causes C0222 on a 2014-2016 Tesla Model S?
Common causes of C0222 include: Alternator overcharging, Voltage regulator failure, Jump-starting voltage spike, Aftermarket charger connected while running.