PowertrainP0103
CautionSeverity: Caution - get it checked when you can
Mass or Volume Air Flow Circuit High Input
Key terms: Turbocharger: an exhaust-driven fan that pushes extra air into the engine · Boost pressure: extra air pressure made by a turbo or supercharger · Mass air flow sensor: measures the air going into the engine · Control module: a small computer that runs one part of the car · 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 higher than the range the engine computer considers possible.
2Common causes
- Contaminated or faulty mass air flow sensor
- Damaged wiring or connector
- Turbocharger or boost control fault
- Intake system leak
- Engine control module fault
3Can I drive?
Usually safe to drive gently. If the engine runs 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 | P0103 | Mass or Volume Air Flow Circuit High Input SAE | Powertrain |
| BAIC Motor | P0103 | Mass or Volume Air Flow A Circuit High Brand | Powertrain |
| Mercedes-Benz | P0103 | Mass or Volume Air Flow Circuit High Input SAE | Powertrain |
| BMW | P0103 | Signal above threshold Brand | Powertrain |
| BYD | P0103 | Airflow sensor high Brand | Powertrain |
| Chery | P0103 | Airflow sensor high Brand | Powertrain |
| Chrysler | P0103 | Lost Communication With Electric Gear Shift Module Brand | Powertrain |
| Daewoo | P0103 | Mass Air Flow Sensor Voltage High Brand | Powertrain |
| Daihatsu | P0103 | Air flow sensor system open/high Brand | Powertrain |
| DFFS | P0103 | Mass or Volume Air Flow A Circuit High Brand | Powertrain |
| DFFX | P0103 | Airflow sensor high Brand | Powertrain |
| DFXK | P0103 | Mass or Volume Air Flow A Circuit High Brand | Powertrain |
| EOBD | P0103 | Mass or volume air flow sensor 'A' circuit high Brand | Powertrain |
| Fiat | P0103 | Lost communication with electric gear shift module Brand | Powertrain |
| Ford | P0103 | Mass or Volume Air Flow Circuit High Input SAE | Powertrain |
| Geely | P0103 | Airflow sensor high Brand | Powertrain |
| GM | P0103 | Mass or Volume Air Flow A Circuit High Brand | Powertrain |
| Great Wall | P0103 | Airflow sensor high Brand | Powertrain |
| Hafei | P0103 | Airflow sensor high Brand | Powertrain |
| Holden | P0103 | Mass Air Flow (MAF) Sensor Circuit High Voltage Brand | Powertrain |
| Honda | P0103 | Mass or Volume Air Flow Circuit High Input SAE | Powertrain |
| Hyundai | P0103 | Mass or Volume Air Flow Circuit High Input SAE | Powertrain |
| Isuzu | P0103 | Mass or Volume Air Flow Circuit High Input SAE | Powertrain |
| Land Rover | P0103 | Mass or Volume Air Flow Circuit High Input SAE | Powertrain |
| Mahindra | P0103 | Mass or Volume Air Flow Circuit High Input SAE | Powertrain |
| Maserati | P0103 | Lost Communication With Electric Gear Shift Module Brand | Powertrain |
| Mazda | P0103 | Mass or Volume Air Flow Circuit High Input SAE | Powertrain |
| Mitsubishi | P0103 | AFS too high Brand | Powertrain |
| Nissan | P0103 | Mass or Volume Air Flow Circuit High Input SAE | Powertrain |
| Opel | P0103 | Mass or Volume Air Flow A Circuit High Brand | Powertrain |
| Perodua | P0103 | Air flow sensor system open/high Brand | Powertrain |
| Peugeot | P0103 | Mass or Volume Air Flow Circuit High Input SAE | Powertrain |
| Porsche | P0103 | Heißfilmluftmassenmesser - max Brand | Powertrain |
| Proton | P0103 | AFS too high Brand | Powertrain |
| Renault | P0103 | Mass or Volume Air Flow Circuit High Input SAE | Powertrain |
| Saab | P0103 | Mass or Volume Air Flow A Circuit High Brand | Powertrain |
| MG (SAIC) | P0103 | Hot Film Meter Sensor Circuit High Brand | Powertrain |
| Sprinter | P0103 | Mass or Volume Air Flow Circuit High Input SAE | Powertrain |
| Subaru | P0103 | Mass or Volume Air Flow Circuit High Brand | Powertrain |
| Suzuki | P0103 | Mass air flow (MAF) sensor circuit high input Brand | Powertrain |
| Tata | P0103 | Mass Airflow Sensor High Brand | Powertrain |
| Toyota | P0103 | Mass or Volume Air Flow A Circuit High Brand | Powertrain |
| Volkswagen | P0103 | Mass air flow sensor (G70): signal too high; Defective 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 5
These 7-character codes are manufacturer-specific variants of P0103 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Hyundai | P010300 | is set when MAFS output voltage above 1000μsec is detected for more than 4.98 sec. This code is due to excessive output voltage from sensor component or poor connection in sensor circuit Brand | Powertrain |
| SsangYong | P010300 | High HFM sensor signal (circuit short) Brand | Powertrain |
| SsangYong | P010312 | Intake flow sensor (hot film air mass meter) heating circuit short to battery (+) Brand | Powertrain |
| SsangYong | P010313 | Intake flow sensor (hot film air mass meter) circuit short to battery (+) Brand | Powertrain |
| SsangYong | P010336 | HFM signal period out of range spec (too high) Brand | Powertrain |
6Related codes
Browse Pxxx codes or P010xx codes.