P0102 fault code: what it means

P0102: MAF sensor signal is too low.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

dirty MAF sensor
split intake hose or loose clamp after the MAF
MAF signal wire shorted or open
failed MAF sensor

P0102 by make

Isuzu

MAF sensor circuit low.

Usual causes: faulty MAF sensor; wiring or connector

Nissan

Mass airflow sensor signal too low or missing.

Usual causes: MAF connector loose or unplugged; MAF wiring damaged or corroded; failed MAF sensor

Subaru

Mass air flow sensor signal is too low.

Usual causes: faulty or contaminated MAF sensor; MAF wiring or connector fault; large air leak after the MAF

What the repair usually costs

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

Not sure what P0102 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.