What does code P0103 mean?

Q: What does code P0103 mean?

Mass/Volume Air Flow Circuit High Input. P0103 means the engine computer has detected a signal voltage from the mass air flow (MAF) sensor that is higher than the maximum value it expects for the current operating conditions. The computer sets this code when the MAF sensor circuit reports an abnormally high input, which can be caused by a faulty sensor, wiring problems, or unmetered air entering the engine.

DTC codes / P01xx · Fuel and air metering / P0103

P0103Mass/Volume Air Flow Circuit High Input

P0103 means the engine computer has detected a signal voltage from the mass air flow (MAF) sensor that is higher than the maximum value it expects for the current operating conditions. The computer sets this code when the MAF sensor circuit reports an abnormally high input, which can be caused by a faulty sensor, wiring problems, or unmetered air entering the engine.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.