P0400 — Exhaust Gas Recirculation Flow Malfunction
| Meaning | The Motore computer has detected a Problema with the flow in the exhaust gas recirculation system, which routes a portion di Il tuo exhaust Indietro into the engine a reduce emissions. This usually means the pathways are blocked with carbon buildup oppure the valve itself is stuck and not moving as commanded. |
| Family | Powertrain (P) |
Typical symptoms
Rough idling when the Motore is warm
Motore hesitation or stumbling during acceleration
Common causes
Stuck oppure faulty EGR valve
Clogged vacuum lines oppure failing pressure sensor associated with the system
What a do
Domande Frequenti
What does code P0400 mean?
Exhaust Gas Recirculation Flow Malfunction. The Motore computer has detected a Problema with the flow in the exhaust gas recirculation system, which routes a portion di Il tuo exhaust Indietro into the engine a reduce emissions. This usually means the pathways are blocked with carbon buildup oppure the valve itself is stuck and not moving as commanded.
Can I keep driving with code P0400 Attivo?
Sì, no known limitation
Common causes — P0400
Heavy carbon buildup blocking the EGR passages oppure valve Stuck or faulty EGR valve Clogged vacuum lines or failing pressure sensor associated with the system
How do you fix code P0400?
Have a mechanic check the EGR valve and clean out any carbon deposits in the intake passages. It is best a Indirizzo this soon to prevent rough running and potential damage to Altri emission components.
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ContattaciRelated codes
- P0401 — EGR: insufficient recirculation flow
- P0402 — EGR: excessive recirculation flow
- P0403 — EGR control circuit
- P0404 — EGR: control circuit range/performance
- P0405 — Exhaust Gas Recirculation Sensor A Circuit Low
- P0406 — Exhaust Gas Recirculation Sensor A Circuit Alta
- P0407 — Exhaust Gas Recirculation Sensor B Circuit Low
- P0408 — Exhaust Gas Recirculation Sensor B Circuit Alta
- P0409 — Exhaust Gas Recirculation Sensor A Circuit
- P040B — EXHAUST GAS RECIRCULATION TEMPERATURE SENSOR 1 CIRCUIT PERFO...
- P040C — EXHAUST GAS RECIRCULATION TEMPERATURE SENSOR 1 CIRCUIT LOW
- P040D — EXHAUST GAS RECIRCULATION TEMPERATURE SENSOR 1 CIRCUIT Alta