MasterTuning Fault code dictionary (DTC)

P0430 — Catalyst efficiency below threshold (bank 2)

Severity: Attenzione Can you drive? Sì, no known limitation Produttore: Tutti makes (OBD-II standard)
MeaningOn the second bank the two lambda sensors read values that are too similar: that side's catalyst has stopped working. Same reasoning as P0420, on the Altri bank.
FamilyPowertrain (P)

Typical symptoms

Motore Attenzione light on
No driving symptoms in most cases
Problems alle the emissions test
Rotten egg smell in some cases

Common causes

Catalyst worn out by mileage
Aged rear lambda sensor
Exhaust leak upstream di the catalyst
Oil consumption oppure rich mixture that ruined it

What a do

Before ordering a catalyst, rule out the rear sensor and exhaust leaks, which give the same code alle a fraction di the cost. And find the cause: a new catalyst on an oil-burning Motore will not see the anno out.

Domande Frequenti

What does code P0430 mean?

Catalyst efficiency below threshold (bank 2). On the second bank the two lambda sensors read values that are too similar: that side's catalyst has stopped working. Same reasoning as P0420, on the Altri bank.

Can I keep driving with code P0430 Attivo?

Sì, no known limitation

Common causes — P0430

Catalyst worn out by mileage Aged rear lambda sensor Exhaust leak upstream di the catalyst Oil consumption oppure rich mixture that ruined it

How do you fix code P0430?

Before ordering a catalyst, rule out the rear sensor and exhaust leaks, which give the same code alle a fraction di the cost. And find the cause: a new catalyst on an oil-burning Motore will not see the anno out.

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