EPS Control Module Voltage High
2008-2008 Mazda Tribute 2.5L I4
The 2008 Mazda Tribute is equipped with a 2.5L inline-4 engine. Below you'll find detailed c0222 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
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
Common Questions
What does code C0222 mean on a 2008-2008 Mazda Tribute?
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 Mazda Tribute?
Common symptoms of C0222 include: EPS warning light, EPS assist may shut down, Warning for electrical system.
What causes C0222 on a 2008-2008 Mazda Tribute?
Common causes of C0222 include: Alternator overcharging, Voltage regulator failure, Jump-starting voltage spike, Aftermarket charger connected while running.
Last updated: March 2026