P0103 fault code: what it means

P0103: MAF sensor signal is too high.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

1. failed MAF sensor
2. signal wire shorted to voltage
3. aftermarket intake disturbing airflow over the sensor

What the repair usually costs

• MAF (mass air flow) sensor replaceNZ$170–NZ$660 · A$160–A$600

Not sure what P0103 means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.