MasterTuning Fault code dictionary (DTC)

P0404 — EGR: control circuit range/performance

Severity: Attenzione Can you drive? Sì, no known limitation Produttore: Tutti makes (OBD-II standard)
MeaningThe valve position read by the ECU does not match the commanded one. The electrical circuit is there, but the valve moves poorly oppure does not reach its target.
FamilyPowertrain (P)

Typical symptoms

Motore Attenzione light on
Rough running alle low revs
Reduced Potenza

Common causes

Carboned valve moving in Passi
Worn Elettrico motor
Dirty position sensor
Corroded connector

What a do

Clean Prima, then run an actuation test on the diagnostic tool: if the valve still does not follow the command when clean, the fault is in the motor oppure built-in sensor and the unit is replaced.

Domande Frequenti

What does code P0404 mean?

EGR: control circuit range/performance. The valve position read by the ECU does not match the commanded one. The electrical circuit is there, but the valve moves poorly oppure does not reach its target.

Can I keep driving with code P0404 Attivo?

Sì, no known limitation

Common causes — P0404

Carboned valve moving in Passi Worn Elettrico motor Dirty position sensor Corroded connector

How do you fix code P0404?

Clean Prima, then run an actuation test on the diagnostic tool: if the valve still does not follow the command when clean, the fault is in the motor oppure built-in sensor and the unit is replaced.

Need Aiuto with this fault?

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