PowertrainP0101
CautionSeverity: Caution - get it checked when you can
Mass or Volume Air Flow Circuit Range/Performance
Key terms: Mass air flow sensor: measures the air going into the engine · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions
1What it means in plain English
The mass air flow sensor reading does not match what the engine computer expects from the engine's speed and load.
2Common causes
- Dirty mass air flow sensor
- Vacuum or intake air leak after the sensor
- Clogged or badly fitted air filter
- Damaged wiring or connector
- Faulty mass air flow sensor
3Can I drive?
Caution · drive with care
Usually safe to drive gently. Expect rough running, hesitation, or poor fuel economy; have it checked soon.
This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.
4Brand data 42
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P0101 | Mass or Volume Air Flow Circuit Range/Performance SAE | Powertrain |
| BAIC Motor | P0101 | Air flow sensor signal implausible Brand | Powertrain |
| Mercedes-Benz | P0101 | Mass or Volume Air Flow Circuit Range/Performance SAE | Powertrain |
| BMW | P0101 | DME: Signal, air-mass flow sensor Brand | Powertrain |
| BYD | P0101 | Airflow sensor range Brand | Powertrain |
| Chery | P0101 | Intake manifold Brand | Powertrain |
| Chrysler | P0101 | Mass or Volume Air Flow Circuit Range/Performance SAE | Powertrain |
| Daewoo | P0101 | Mass Air Flow System Performance Brand | Powertrain |
| Daihatsu | P0101 | Mass flow sensor out of range Brand | Powertrain |
| DFFS | P0101 | Mass or Volume Air Flow A Circuit Range/Performance Brand | Powertrain |
| DFFX | P0101 | Airflow sensor range Brand | Powertrain |
| DFXK | P0101 | Air flow meter hardware fault Brand | Powertrain |
| EOBD | P0101 | Masse- eller volumluftmengdesensor 'A' krets område/ytelse Brand | Powertrain |
| Ford | P0101 | Mass or Volume Air Flow Circuit Range/Performance SAE | Powertrain |
| Geely | P0101 | Airflow sensor range Brand | Powertrain |
| GM | P0101 | Mass Air Flow(MAF) Sensor Performance Brand | Powertrain |
| Great Wall | P0101 | Airflow sensor range Brand | Powertrain |
| Hafei | P0101 | Airflow sensor range Brand | Powertrain |
| Holden | P0101 | Mass Air Flow (MAF) Sensor Circuit Brand | Powertrain |
| Honda | P0101 | Mass or Volume Air Flow Circuit Range/Performance SAE | Powertrain |
| Hyundai | P0101 | Mass or Volume Air Flow Circuit Range/Performance SAE | Powertrain |
| Isuzu | P0101 | Mass or Volume Air Flow Circuit Range/Performance SAE | Powertrain |
| Land Rover | P0101 | Check for any or P010B diagnostic trouble codes Brand | Powertrain |
| Mahindra | P0101 | Mass or Volume Air Flow Circuit Range/Performance SAE | Powertrain |
| Maserati | P0101 | Mass Air Flow (MAF) sensor A circuit performance Brand | Powertrain |
| Mazda | P0101 | Mass or Volume Air Flow Circuit Range/Performance SAE | Powertrain |
| Mitsubishi | P0101 | Airflow sensor range Brand | Powertrain |
| Nissan | P0101 | Mass or Volume Air Flow Circuit Range/Performance SAE | Powertrain |
| Opel | P0101 | Mass Air Flow(MAF) Sensor Performance Brand | Powertrain |
| Perodua | P0101 | Mass flow sensor out of range Brand | Powertrain |
| Peugeot | P0101 | Mass or Volume Air Flow Circuit Range/Performance SAE | Powertrain |
| Porsche | P0101 | Heißfilmluftmassenmesser - plaus Brand | Powertrain |
| Proton | P0101 | Airflow sensor range Brand | Powertrain |
| Renault | P0101 | Mass or Volume Air Flow Circuit Range/Performance SAE | Powertrain |
| Saab | P0101 | Mass Air Flow(MAF) Sensor Performance Brand | Powertrain |
| MG (SAIC) | P0101 | Mass or Volume Air Flow Circ. Range/Performance Brand | Powertrain |
| Sprinter | P0101 | Mass or Volume Air Flow Circuit Range/Performance SAE | Powertrain |
| Subaru | P0101 | Mass or Volume Air Flow Circuit Range/Performance SAE | Powertrain |
| Suzuki | P0101 | Mass or Volume Air Flow 'A' Circuit Range / Performance Brand | Powertrain |
| Tata | P0101 | AMF Plausibility Fault Brand | Powertrain |
| Toyota | P0101 | ECU lost communication with transmission control module (TCM) Brand | Powertrain |
| Volkswagen | P0101 | Mass air flow sensor (G70): implausible signal Brand | Powertrain |
Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.
5Extended variant codes 11
These 7-character codes are manufacturer-specific variants of P0101 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P010100 | Der Luftmassenmesser 1 hat Funktionsstörung. Brand | Powertrain |
| Hyundai | P010100 | is set 1) when Air flow sensor feedback value out of available range for 0.5 second Brand | Powertrain |
| Sprinter | P010100 | Der Luftmassenmesser 1 hat Funktionsstörung. Brand | Powertrain |
| SsangYong | P010100 | Mass or volume air flow circuit range/performance Brand | Powertrain |
| Mercedes-Benz | P010102 | AMF: Der Luftmassenmesser 1 hat Funktionsstörung. Es liegt ein allgemeiner Signalfehler vor. Brand | Powertrain |
| Sprinter | P010102 | AMF: Der Luftmassenmesser 1 hat Funktionsstörung. Es liegt ein allgemeiner Signalfehler vor. Brand | Powertrain |
| Mercedes-Benz | P010106 | Der Luftmassenmesser 1 hat Funktionsstörung.Es liegt ein Algorithmusfehler vor. Brand | Powertrain |
| Mercedes-Benz | P010126 | Der Luftmassenmesser 1 hat Funktionsstörung.Signaländerungsrate ist unterhalb des zulässigen Grenzwertes. Brand | Powertrain |
| Mercedes-Benz | P010164 | Der Luftmassenmesser 1 hat Funktionsstörung. Es liegt ein unplausibles Signal vor. Brand | Powertrain |
| Mercedes-Benz | P010184 | Der Luftmassenmesser 1 hat Funktionsstörung. Es liegt ein Signal unterhalb des zulässigen Grenzwertes. Brand | Powertrain |
| SsangYong | P010186 | Intake flow sensor (hot film air mass meter) signal missing Brand | Powertrain |
6Related codes
Browse Pxxx codes or P010xx codes.