What does code P0403 mean?
General electrical malfunction in EGR circuit
OBD-II Code
P0403 — Exhaust Gas Recirculation Circuit Malfunction
General electrical malfunction in EGR circuit
Common symptoms
- Check engine light
- mild power loss
Possible causes
- Open or shorted solenoid
- damaged wiring
Initial recommendation
Inspect wiring continuity, solenoid operation and power supply.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0403 with your vehicle's actual symptoms for more complete diagnostic guidance.
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