P0102 on a Jeep: Causes, Fixes & Repair Cost

🟠 Moderate severity · drivable

Usually drivable, but a weak MAF signal can cause rough idling or stalling, so get it checked soon.

What P0102 means on a Jeep

On a Jeep, P0102 means the mass air flow (MAF) sensor is reporting airflow lower than the engine computer expects. The computer can't meter the incoming air correctly, so the fuel mixture goes off and the engine may idle rough, hesitate, or stall.

Is P0102 common on Jeeps?

P0102 shows up on Jeeps with the 3.6L Pentastar V6, most often in Wrangler, Grand Cherokee, and Cherokee models. The MAF sensor wire gets contaminated, sometimes by over-oiled aftermarket air filters, and dirty air filters or loose intake clamps can cause it too.

Commonly reported on: Wrangler, Grand Cherokee, Cherokee, Compass.

Symptoms

Check engine light is on
Rough idle or stalling
Hesitation or lack of power
Poor fuel economy

Common causes

most common: Dirty or contaminated MAF sensor
common: Loose or corroded MAF sensor connector or wiring
common: Clogged or overly oiled air filter
less common: Faulty MAF sensor that needs replacement

How to fix it

Fix	DIY?	Typical cost
Clean the MAF sensor with MAF cleaner spray	Yes	$10–20
Replace the air filter	Yes	$20–50
Repair the MAF sensor connector or wiring	Mechanic	$100–250
Replace the MAF sensor	Yes	$100–280