C0290: Lost Communications With PCM
Possible Causes
- Faulty wheel speed sensor or ABS solenoid
- Wiring or connector issues in the chassis circuit
- Low brake fluid or hydraulic issues
- Malfunctioning electronic brake control module (EBCM)
- Mechanical issues in the brake or suspension system
Diagnosis and Repair
- Scan for C-codes using an OBD-II scanner and note related codes
- Inspect wheel speed sensors and ABS solenoids for damage
- Check brake fluid level and condition; refill or flush if needed
- Test wiring and connectors for continuity and corrosion
- Replace faulty sensors or repair hydraulic components
- Clear codes and test drive to verify repair
Related Error Codes
See also:”> C0221, C0222, C0223, C0225, C0226
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