P0104 fault code: what it means

P0104: Mass air flow sensor signal intermittent: the airflow reading jumps around.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

1. loose or corroded MAF connector
2. wire breaking near the plug
3. failing MAF sensor
4. intake air leak

P0104 by make

What the repair usually costs

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

Not sure what P0104 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.