PowertrainP0102
CautionSeverity: Caution - get it checked when you can
Mass or Volume Air Flow Circuit Low Input
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 signal is lower than the range the engine computer considers possible.
2Common causes
- Dirty mass air flow sensor
- Large vacuum or intake leak
- Disconnected or damaged sensor wiring
- Faulty mass air flow sensor
- Air filter or intake restriction
3Can I drive?
Usually safe to drive gently. If the engine stalls or runs very badly, stop and have it checked.
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 43
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P0102 | Pre-Supply Pump. Power Stage. Short Circuit To Battery Brand | Powertrain |
| BAIC Motor | P0102 | Mass or Volume Air Flow A Circuit Low Brand | Powertrain |
| Mercedes-Benz | P0102 | Mass or Volume Air Flow Circuit Low Input SAE | Powertrain |
| BMW | P0102 | Signal below threshold Brand | Powertrain |
| BYD | P0102 | Airflow sensor low Brand | Powertrain |
| Chery | P0102 | Airflow sensor low Brand | Powertrain |
| Chrysler | P0102 | Mass Air Flow Brand | Powertrain |
| Daewoo | P0102 | Mass Air Flow Sensor Voltage Low Brand | Powertrain |
| Daihatsu | P0102 | Air flow sensor system open/low Brand | Powertrain |
| DFFS | P0102 | Mass or Volume Air Flow A Circuit Low Brand | Powertrain |
| DFFX | P0102 | Airflow sensor low Brand | Powertrain |
| DFXK | P0102 | Mass or Volume Air Flow A Circuit Low Brand | Powertrain |
| EOBD | P0102 | Krug senzora mase ili volumena zraka 'A' nizak Brand | Powertrain |
| Fiat | P0102 | Lost communication with transfer case control module / AWD Brand | Powertrain |
| Ford | P0102 | Mass or Volume Air Flow Circuit Low Input SAE | Powertrain |
| Geely | P0102 | Airflow sensor low Brand | Powertrain |
| GM | P0102 | Mass or Volume Air Flow A Circuit Low Brand | Powertrain |
| Great Wall | P0102 | Airflow sensor low Brand | Powertrain |
| Hafei | P0102 | Airflow sensor low Brand | Powertrain |
| Holden | P0102 | Mass Air Flow (MAF) Sensor Circuit Low Voltage Brand | Powertrain |
| Honda | P0102 | Mass or Volume Air Flow Circuit Low Input SAE | Powertrain |
| Hyundai | P0102 | Mass or Volume Air Flow Circuit Low Input SAE | Powertrain |
| Isuzu | P0102 | Mass or Volume Air Flow Circuit Low Input SAE | Powertrain |
| Land Rover | P0102 | Mass or Volume Air Flow Circuit Low Input SAE | Powertrain |
| Mahindra | P0102 | Mass or Volume Air Flow Circuit Low Input SAE | Powertrain |
| Maserati | P0102 | lost communication with transfer case control module/AWD Brand | Powertrain |
| Mazda | P0102 | Mass or Volume Air Flow Circuit Low Input SAE | Powertrain |
| Mitsubishi | P0102 | AFS too low Brand | Powertrain |
| Nissan | P0102 | Mass or Volume Air Flow Circuit Low Input SAE | Powertrain |
| Opel | P0102 | Mass or Volume Air Flow A Circuit Low Brand | Powertrain |
| Perodua | P0102 | Air flow sensor system open/low Brand | Powertrain |
| Peugeot | P0102 | Mass or Volume Air Flow Circuit Low Input SAE | Powertrain |
| Porsche | P0102 | Heißfilmluftmassenmesser - min Brand | Powertrain |
| Proton | P0102 | AFS too low Brand | Powertrain |
| Renault | P0102 | Mass or Volume Air Flow Circuit Low Input SAE | Powertrain |
| Saab | P0102 | Mass or Volume Air Flow A Circuit Low Brand | Powertrain |
| MG (SAIC) | P0102 | Mass or Volume Air Flow A Circuit Low Brand | Powertrain |
| Sprinter | P0102 | Mass or Volume Air Flow Circuit Low Input SAE | Powertrain |
| Subaru | P0102 | Mass or Volume Air Flow Circuit Low Brand | Powertrain |
| Suzuki | P0102 | Mass air flow (MAF) sensor circuit low input Brand | Powertrain |
| Tata | P0102 | Mass Airflow Sensor Low Brand | Powertrain |
| Toyota | P0102 | Mass or Volume Air Flow A Circuit Low Brand | Powertrain |
| Volkswagen | P0102 | Mass air flow sensor (G70): signal too low; Short to plus 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 4
These 7-character codes are manufacturer-specific variants of P0102 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Hyundai | P010200 | is set when MAFS output voltage is below lower limit for more than 4.98 sec. This code is due to 1)open in power circuit 2) open or short to ground in signal circuit Brand | Powertrain |
| SsangYong | P010200 | Low HFM sensor signal (circuit open) Brand | Powertrain |
| SsangYong | P010211 | Intake flow sensor (hot film air mass meter) circuit short to ground Brand | Powertrain |
| SsangYong | P010237 | Intake flow sensor (hot film air mass meter) signal period too low Brand | Powertrain |
6Related codes
Browse Pxxx codes or P010xx codes.