P0108 on a Honda: Causes, Fixes & Repair Cost
🟠 Moderate severity · drivable
Safe to drive, but the engine may run rich, idle rough, and burn extra fuel until the sensor is fixed.
What P0108 means on a Honda
On a Honda, P0108 means the manifold absolute pressure (MAP) sensor is sending a voltage higher than the computer expects. Most Honda engines use a MAP sensor instead of a MAF sensor, so this code is fairly common on the brand. A failed sensor or a wiring problem can make the engine run rich, idle rough, or hesitate.
Is P0108 common on Hondas?
Hondas from the Civic to the Accord and CR-V rely on MAP sensors, and P0108 typically comes from the sensor itself or its connector. Higher-mileage cars often see this after the connector pins corrode or the harness is disturbed during other engine work.
Commonly reported on: Civic, Accord, CR-V, Element.
Symptoms
- Check engine light on
- Rough idle or stalling
- Hesitation or stumbling under load
- Poor fuel economy
Common causes
- most common: Faulty MAP sensor
- common: Signal wire shorted toward 5 volts
- common: Corroded or loose connector pins
- less common: Damaged wiring between the sensor and computer
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Replace the MAP sensor | Yes | $30–80 |
| Clean and reseat the sensor connector | Yes | $5–15 |
| Have a shop replace the sensor and test the circuit | Mechanic | $120–220 |
Frequently asked questions
Other common Honda codes
P0108 on other brands
Looking for the full (non-brand-specific) guide? See the P0108 code page →
Browse all Honda codes: Honda hub →
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.