P0172System Too Rich (Bank 1)
Ecco cosa significa il codice di errore P0172, perché si verifica e cosa fare.
Sistema: Fuel & air metering
Di solito è sicuro guidare per brevi tragitti, ma fallo controllare al più presto.
Cosa significa P0172
The engine computer detected that the air-fuel mixture on bank 1 is too rich, meaning there is too much fuel or not enough air. The computer reduced fuel as much as it could but still measured an over-rich mixture. Running rich wastes fuel and can foul spark plugs and damage the catalytic converter.
Sintomi comuni
- Check engine light
- Rough idle
- Poor fuel economy
- Black smoke from exhaust
- Fuel smell
- Possible fouled spark plugs or hesitation
Cause comuni
Elencate dalla più comune alla meno comune.
- 1Dirty or faulty mass air flow (MAF) sensor
- 2Leaking or stuck-open fuel injectors
- 3High fuel pressure (faulty fuel pressure regulator)
- 4Faulty oxygen sensor
- 5Dirty air filter or restricted air intake
- 6Faulty engine coolant temperature sensor (false cold reading)
Cosa fare
Have a professional read live fuel trim data and inspect the MAF sensor and air filter, since metering and intake restrictions are common causes. They should also check fuel pressure and the injectors for leaks; it is generally drivable, but fix it soon because a rich mixture can foul plugs and harm the catalytic converter.
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Domande frequenti
Cosa significa il codice P0172?
The engine computer detected that the air-fuel mixture on bank 1 is too rich, meaning there is too much fuel or not enough air. The computer reduced fuel as much as it could but still measured an over-rich mixture. Running rich wastes fuel and can foul spark plugs and damage the catalytic converter.
Quali sono le cause del codice P0172?
Le cause più comuni sono: Dirty or faulty mass air flow (MAF) sensor, Leaking or stuck-open fuel injectors, High fuel pressure (faulty fuel pressure regulator), Faulty oxygen sensor, Dirty air filter or restricted air intake, Faulty engine coolant temperature sensor (false cold reading).
È sicuro guidare con P0172?
Di solito è sicuro guidare per brevi tragitti, ma fallo controllare al più presto.
Come si risolve il codice P0172?
Have a professional read live fuel trim data and inspect the MAF sensor and air filter, since metering and intake restrictions are common causes. They should also check fuel pressure and the injectors for leaks; it is generally drivable, but fix it soon because a rich mixture can foul plugs and harm the catalytic converter.
Queste sono informazioni generali per aiutarti a capire il codice P0172, non un sostituto della diagnosi di un meccanico qualificato. Conferma sempre la causa prima di sostituire i componenti.
Le definizioni dei codici seguono l’elenco standardizzato OBD-II (SAE J2012). CarVinVin è indipendente e non è affiliata ad alcun produttore.