P0103
Mass or Volume Air Flow Circuit High Input
Generic code
Fuel and Air Metering
High severity
Hard repair
Free on OBD DashX
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What P0103 means
- The fault code P0103 indicates that there is a high input signal within the circuit that monitors the amount of air entering the engine. This can cause problems with engine performance and fuel efficiency.
Possible symptoms
- Engine hesitates or stalls
- Reduced fuel efficiency
- Illuminated check engine light
- Increased emissions
- Decreased engine performance and acceleration.
Possible causes
- Dirty or faulty mass airflow sensor (MAF)
- Wiring issues in the MAF circuit
- Vacuum leaks in the intake system
- Failed engine control module (ECM)
Related parts
- Mass Air Flow Sensor: A mass (air) flow sensor (MAF) measures the amount of air entering the engine to ensure proper combustion. This car's malfunctioning MAF sensor will lead to poor fuel economy and performance
Possible solutions
- Clean or replace the mass airflow sensor
- Check and repair any damaged wiring in the MAF circuit
- Inspect and repair any vacuum leaks in the intake system
- Replace the engine control module (ECM) if necessary
Free on OBD DashX
P0103 on OBD DashX
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