P0102 on a Nissan: Causes, Fixes & Repair Cost

🟠 Moderate severity · drivable

You can usually drive a Nissan with P0102, but the engine may run rough or stall until the sensor is fixed.

What P0102 means on a Nissan

On a Nissan, P0102 means the mass air flow sensor signal is lower than the engine computer expects. The MAF sensor measures incoming air so the computer can add the right amount of fuel. A weak signal usually means the sensor is dirty or failing, or the intake has a problem.

Is P0102 common on Nissans?

P0102 is common on Nissans with higher mileage, especially Altimas, Sentras, and Rogues. Nissan MAF sensors get coated with dust and oil over time, which drops their signal. Cleaning the sensor is often enough, though the sensor itself can also fail.

Commonly reported on: Altima, Sentra, Rogue, Pathfinder.

Symptoms

Check engine light on
Rough idle or hesitation
Stalling at stops
Worse fuel economy

Common causes

most common: Dirty or contaminated MAF sensor
common: Faulty MAF sensor
common: Air intake leak after the MAF
less common: Wiring or connector problem

How to fix it

Fix	DIY?	Typical cost
Clean the MAF sensor with MAF cleaner	Yes	$10–15
Replace the air filter	Yes	$15–40
Replace the MAF sensor	Yes	$80–250
Repair an intake leak or wiring	Mechanic	$80–250