P0404 Exhaust Gas Recirculation Circuit Range/Performance

Powertrain Severity: Moderate Generic OBD-II

The EGR valve position does not match the command.

Common causes

  • Carbon build-up
  • Sticking valve
  • Faulty position sensor

Symptoms

  • Check engine light
  • Rough idle

What to check

  1. Clean or replace the EGR valve
  2. Check position sensor signal

Manufacturers may add their own detail to generic codes. If your vehicle shows a different description for P0404, follow the service information for that make and model.

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