P0106 on a Jeep: Causes, Fixes & Repair Cost

🟠 Moderate severity · drivable

Safe to drive, but rough idle, stalling, and reduced power are common until the MAP sensor or vacuum issue is fixed.

What P0106 means on a Jeep

On a Jeep, P0106 means the engine computer sees a manifold absolute pressure (MAP) sensor reading that is out of range for the current engine conditions. The MAP sensor measures intake vacuum and engine load, so a bad reading makes the computer guess wrong on fuel and spark. On Jeeps this usually comes down to a vacuum leak or a weak sensor.

Is P0106 common on Jeeps?

P0106 is very familiar on older Jeeps with the 4.0L inline-six, like Cherokee and Wrangler models, where the MAP sensor and its vacuum line are known wear items. Cracking vacuum lines and a failing sensor are the typical culprits on these engines. Grand Cherokee and newer models can see it too after high mileage.

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

Symptoms

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

Common causes

most common: Cracked or disconnected vacuum line to the MAP sensor
common: Faulty MAP sensor
common: Intake manifold vacuum leak
less common: Loose or corroded sensor connector or wiring

How to fix it

Fix	DIY?	Typical cost
Replace the MAP sensor vacuum line	Yes	$10–40
Replace the MAP sensor	Yes	$50–150
Repair an intake manifold leak	Mechanic	$100–300

Frequently asked questions

Can I drive my Jeep with a P0106 code?

Yes. It is safe to drive, but you may notice rough idle and weak acceleration until the vacuum leak or sensor is repaired.

What causes P0106 on a Jeep?

Most often a cracked or loose vacuum line to the MAP sensor, especially on the older 4.0L engines in Cherokee and Wrangler models. A failing sensor is the next most common cause.

How much does it cost to fix P0106 on a Jeep?

A vacuum line is about $10 to $40, and a new MAP sensor runs $50 to $150. Labor adds to the bill if you use a shop.