What does code P0402 mean?
Excessive EGR flow detected
OBD-II Code
P0402 — Exhaust Gas Recirculation Flow Excessive Detected
Excessive EGR flow detected
Common symptoms
- Engine stalls at idle
- acceleration issues
Possible causes
- EGR valve stuck open
- faulty solenoid
Initial recommendation
Inspect EGR solenoid and valve for sticking.
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 P0402 with your vehicle's actual symptoms for more complete diagnostic guidance.
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