P0102 on a Chevy: Causes, Fixes & Repair Cost

🟠 Moderate severity · drivable

You can usually drive a Chevy with P0102, but the engine may run rough or use more fuel until the sensor is fixed.

What P0102 means on a Chevy

On a Chevy, P0102 means the mass air flow sensor signal is too low. The MAF sensor measures incoming air so the engine computer can set the right fuel mixture. A weak signal usually means a dirty or failing sensor, or a leak in the intake.

Is P0102 common on Chevys?

P0102 shows up on Chevys with higher mileage, especially Silverados, Malibus, and Equinoxes. Dust and oil coat the MAF sensing element over time, especially with a dirty air filter. Cleaning the sensor is cheap and often fixes the code.

Commonly reported on: Silverado, Malibu, Equinox, Traverse.

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: Dirty air filter or intake restriction
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 the wiring or connector	Mechanic	$80–200