What does code P0404 mean?
EGR signal or valve position out of expected range
OBD-II Code
P0404 — Exhaust Gas Recirculation Circuit Range/Performance
EGR signal or valve position out of expected range
Common symptoms
- Hesitation
- slow throttle response
Possible causes
- Stuck EGR valve
- faulty position sensor
Initial recommendation
Verify EGR position sensor operation and valve movement.
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 P0404 with your vehicle's actual symptoms for more complete diagnostic guidance.
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