P0101 means your mass air flow (MAF) sensor is sending readings outside the expected range for the current engine speed and throttle position. The ECU uses MAF data to calculate fuel injection, so bad readings cause incorrect air-fuel mixture and poor engine performance.
P0101 means your mass air flow (MAF) sensor is sending readings outside the expected range for the current engine speed and throttle position. The ECU uses MAF data to calculate fuel injection, so bad readings cause incorrect air-fuel mixture and poor engine performance.
P0101 è un codice diagnostico di guasto relativo a sistema di alimentazione, classificato con gravità moderate. Quando la centralina (ECU) del tuo veicolo rileva questa condizione, memorizza P0101 e accende la spia motore.
Se il tuo veicolo ha attivato P0101, potresti notare uno o più di questi sintomi:
Ecco le cause più comuni di P0101, ordinate in base alla probabilità che siano la causa del problema:
In genere sì, per brevi tragitti. Driveable but engine may run poorly. The ECU uses estimated airflow values when the MAF signal is unreliable, causing rougher idle, hesitation, and worse fuel economy. Safe to drive to a shop.
Segui questi passaggi per individuare la causa principale di P0101:
I costi di riparazione di P0101 variano a seconda della causa principale e del tuo veicolo. Ecco le stime tipiche:
Prezzi stimati al March 2026. I costi variano in base alla regione, al veicolo e all'officina.
P0101 si comporta in modo diverso a seconda del tuo veicolo. Seleziona la tua auto qui sotto per cause specifiche del modello, problemi noti e stime dei costi adeguate:
2007-2024
Nissan's hot-film mass air flow (MAF) sensor is a well-known weak point across the Sentra, Altima, Versa, Qashqai/Rogue and Navara/Frontier, so P0101 on these is very often the MAF sensor itself rather than an air leak. An over-oiled aftermarket air filter is a common trigger. Replace with an OEM Hitachi MAF; cheap aftermarket units frequently re-trigger the code.
2007-2024
The Camry uses a Denso hot-wire MAF sensor. On the 2AR-FE 2.5L, the MAF is easily accessible at the top of the airbox. Cleaning resolves P0101 frequently on this engine. Always use OEM-spec Denso or equivalent replacement if cleaning fails.
2006-2024
Honda uses a Keihin MAF integrated into the airbox on many Civic models. The 1.5T (2016+) is more sensitive to MAF contamination due to the turbo's pressure dynamics. The intake boot between the MAF and turbo inlet is a known failure point for air leaks.
Costi stimati per i proprietari di Honda Civicadeguato al ribasso rispetto alla media a causa dei prezzi dei ricambi specifici Honda
Prezzi stimati al March 2026. I costi variano in base alla regione, al veicolo e all'officina.
2005-2024
VW uses Bosch hot-film MAF sensors. On the EA888, the intake tract has multiple joints and a charge pipe that can develop cracks, causing air leaks after the MAF. The PCV system on EA888 is also a common source of metered air bypass when the diaphragm fails.
Costi stimati per i proprietari di Volkswagen Golfadeguato al rialzo rispetto alla media a causa dei prezzi dei ricambi specifici Volkswagen
Prezzi stimati al March 2026. I costi variano in base alla regione, al veicolo e all'officina.
2006-2024
BMW uses Bosch MAF sensors. The N52 intake boot (between MAF and throttle body) is a notorious failure point. Cracks in the rubber boot allow unmetered air into the engine, causing P0101 alongside lean codes. On N55/B48 turbo models, the charge pipe connection at the intercooler is another leak source.
Costi stimati per i proprietari di BMW 3 Seriesadeguato al rialzo rispetto alla media a causa dei prezzi dei ricambi specifici BMW
Prezzi stimati al March 2026. I costi variano in base alla regione, al veicolo e all'officina.
Questi codici compaiono spesso insieme a P0101 o indicano problemi correlati:
Yes, but the engine may run poorly. The ECU uses estimated airflow when the MAF is unreliable, causing rough idle and hesitation. Safe to drive to a shop.
About 50% of the time, yes. Use dedicated MAF sensor cleaner spray. Costs under 15 euros and takes 10 minutes.
The engine runs on a default airflow table. If it runs better unplugged, the sensor is confirmed bad. Don't drive long distances this way.
Yes. A clogged filter changes airflow velocity across the MAF sensor, pushing readings out of range. Replace the filter first. Costs 10-25 euros.
P0101 repair often costs under €15: cleaning the MAF sensor fixes about half of cases. If that fails, replacement runs €70 to €380. Step-by-step fix guide.
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