P0108 Code: Manifold Absolute Pressure Sensor Circuit High

🟠 Moderate severity · drivable

You can usually drive, but the engine may run lean and hesitate until the fault is fixed.

What P0108 means

The MAP sensor voltage is too high, meaning the computer sees a signal above the expected range. A short to power in the wiring or a failed sensor are common causes. The engine may run lean, idle rough, or hesitate.

Symptoms

Check engine light on
Engine runs lean or hesitates
Rough idle
Poor fuel economy
Reduced power

Common causes

most common: Faulty MAP sensor
common: Wiring shorted to power in the MAP circuit
less common: Poor ground connection
less common: Corroded connector

How to fix it

Fix	DIY?	Typical cost
Replace the MAP sensor	Yes	$40–120
Repair the wiring short to power	Yes	$20–80
Repair the sensor ground	Yes	$10–50
Clean the connector	Yes	$0–20

Frequently asked questions

Can I drive with P0108?

Yes, but the engine may run lean and hesitate. Fixing it soon avoids extra strain on the engine.

What is the difference between P0107 and P0108?

P0107 is a low signal and P0108 is a high signal. Both are MAP circuit faults; high voltage often means a short to power.

How much does a MAP sensor cost?

Most MAP sensors cost $40 to $120. Replacing one is usually easy on vehicles where it sits on top of the intake.

Related codes

P0105

P0105 Code: Manifold Absolute Pressure Sensor Circuit

P0106

P0106 Code: Manifold Absolute Pressure Sensor Range/Performance

P0107

P0107 Code: Manifold Absolute Pressure Sensor Circuit Low

P0108 by vehicle brand

Causes and repair costs for P0108 differ between makes. Pick your brand for the specifics.

P0108 on a Mercedes-Benz

Volkswagen

P0108 on a Volkswagen

Updated 2026-08. This page is informational and not a substitute for professional diagnosis.