EPS Control Module Voltage Low
2000-2012 Mitsubishi Eclipse 2.4L I4 🇷🇺
Description
The EPS module supply voltage has dropped below the minimum operating threshold.
Symptoms
- EPS warning light
- Power steering assist reduced
- Assist cuts out during electrical load
- Steering heavy at idle with AC on
Common Causes
- Low battery voltage
- Weak alternator
- High resistance in EPS power supply wiring
- Corroded battery terminals
- Undersized wiring for EPS current demand
Diagnostic Steps
- Measure battery voltage at rest and running
- Test alternator output under load
- Check voltage at EPS module connector
- Inspect battery terminals and cable ends
- Test EPS power supply fuse and connections
Repair Notes
Repair charging system. Clean battery connections. Verify adequate wire gauge to EPS module.
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
C0221 on Other Vehicles
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2002-2012 1.3L I4 4A90
Mitsubishi Colt JP
2002-2012 1.5L I4 4A91
Mitsubishi Delica D:5
2019-2025 2.2L I4 Turbo Diesel 4N14
Mitsubishi Diamante
1997-2004 3.5L V6
Mitsubishi Eclipse
2000-2005 2.4L I4
Mitsubishi Eclipse
2000-2005 3.0L V6
Mitsubishi Eclipse
2006-2012 2.4L I4
Mitsubishi Eclipse
2006-2012 3.8L V6
Common Questions
What does code C0221 mean on a 2000-2012 Mitsubishi Eclipse?
C0221 stands for "EPS Control Module Voltage Low". The EPS module supply voltage has dropped below the minimum operating threshold.
What are the symptoms of C0221 on a Mitsubishi Eclipse?
Common symptoms of C0221 include: EPS warning light, Power steering assist reduced, Assist cuts out during electrical load, Steering heavy at idle with AC on.
What causes C0221 on a 2000-2012 Mitsubishi Eclipse?
Common causes of C0221 include: Low battery voltage, Weak alternator, High resistance in EPS power supply wiring, Corroded battery terminals, Undersized wiring for EPS current demand.