The computer sees an electrical fault in the EGR control circuit. The driver may notice rough running or only the engine light.
Causes vary by car. Test before you order a part.
Likely causes, most common first
- Faulty EGR valve or solenoid
- Open or shorted wiring
- Corroded connector
- Blown fuse
Parts usually involved
- EGR valve Find at suppliers
- Control solenoid Find at suppliers
- Valve connector Find at suppliers
Test before you replace
Measure the solenoid resistance, then check power and the control signal at the connector.
General guidance for generic OBD2 codes. Always follow the maker's procedure for the car in front of you.