One of the most frequent issues in Audi A4 models is the EPC (Electronic Power Control) warning light. This problem is usually related to throttle body or sensors.
Symptoms
- EPC light stays on or flashes
- Vehicle enters limp mode
- Delayed throttle response
- Unstable idle
Possible Causes
- Throttle body malfunction or dirt
- Faulty brake light switch
- ABS/ESP sensor problems
- Wiring harness issues
Solutions
- Read fault codes with OBD
- Clean or replace throttle body
- Replace faulty sensors
- Inspect wiring
Preventive Maintenance
- Check sensors during regular servicing
- Don’t ignore dashboard warning lights
Conclusion
EPC warnings may indicate simple issues, but ignoring them can lead to reduced performance.
