X‑TYPE Wissensdatenbank

Fehlercode-Index · low

P0400

Exhaust Gas Recirculation Flow Malfunction

Exhaust Gas Recirculation Flow Malfunction

Common causes

  • See factory diagnostic procedure / wiring diagram for this code

Quick checks

  • Confirm freeze-frame and conditions when the code set

Typical fixes

  • Clean EGR valve
  • check vacuum lines

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