P0105 Code: Manifold Absolute Pressure Sensor Circuit
🟠 Moderate severity · drivable
You can usually drive, but expect poor performance and fuel economy until the sensor circuit is fixed.
What P0105 means
The manifold absolute pressure (MAP) sensor measures the air pressure inside the intake manifold to help the computer figure out engine load. This code means the sensor circuit is not working properly. The engine may run poorly or lose power.
Symptoms
- Check engine light on
- Poor acceleration or hesitation
- Rough idle
- Poor fuel economy
Common causes
- most common: Faulty MAP sensor
- common: Damaged or loose wiring in the MAP circuit
- common: Vacuum leak in the intake or vacuum lines
- less common: Corroded connector terminals
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Replace the MAP sensor | Yes | $40–120 |
| Repair the MAP sensor wiring | Yes | $20–80 |
| Find and fix vacuum leaks | Yes | $20–100 |
| Clean the connector and terminals | Yes | $0–20 |
Frequently asked questions
Can I drive with P0105?
Yes, but expect poor performance and fuel economy. A bad MAP reading makes the computer guess the fuel mixture.
What does the MAP sensor do?
It measures air pressure in the intake manifold so the computer knows how hard the engine is working.
Where is the MAP sensor located?
It is usually mounted on the intake manifold, sometimes with a small vacuum hose connected to it.
Related codes
P0106
P0106 Code: Manifold Absolute Pressure Sensor Range/Performance
P0107P0107 Code: Manifold Absolute Pressure Sensor Circuit Low
P0108P0108 Code: Manifold Absolute Pressure Sensor Circuit High
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.