What does code P0103 mean?
The MAF sensor is sending an excessively high voltage; the ECU interprets more air than actually entering the engine.
OBD-II Code
P0103 — Mass or Volume Air Flow Circuit High Input
The MAF sensor is sending an excessively high voltage; the ECU interprets more air than actually entering the engine.
Common symptoms
- Erratic acceleration
- hesitation
- possible lean mixture
- increased fuel consumption
- check engine light
Possible causes
- Open circuit
- damaged connector
- incorrect MAF sensor
- air leaks after the sensor
- intake modifications
Initial recommendation
Verify wiring and connector integrity, check for unmetered air after the MAF, clean the sensor.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0103 with your vehicle's actual symptoms for more complete diagnostic guidance.
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