P0106 Code: Manifold Absolute Pressure Sensor Range/Performance
🟠 Moderate severity · drivable
You can usually drive, but the engine may hesitate or idle rough until the problem is found.
What P0106 means
The MAP sensor signal is out of the expected range for the current engine conditions. The computer compares the sensor reading to what it expects and finds a mismatch. This usually points to a vacuum leak or a weak sensor.
Symptoms
- Check engine light on
- Engine hesitation or surging
- Rough idle
- Poor fuel economy
- Hard starting
Common causes
- most common: Vacuum leak in the intake system
- common: Clogged or leaking vacuum hose to the MAP sensor
- common: Faulty MAP sensor
- less common: Wiring or connector issues
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Find and repair vacuum leaks | Yes | $20–100 |
| Check and replace the MAP vacuum hose | Yes | $5–20 |
| Replace the MAP sensor | Yes | $40–120 |
| Repair the wiring and connector | Yes | $20–80 |
Frequently asked questions
Can I drive with P0106?
Yes, but the engine may hesitate or idle rough. A vacuum leak can also let unfiltered air in and lean out the fuel mixture.
What causes a range/performance fault?
The sensor works but reads outside the expected range. Vacuum leaks are the most common reason for this code.
How do I check for a vacuum leak?
Look for cracked or disconnected hoses and listen for hissing at idle. A smoke test at a shop finds leaks fast.
Related codes
P0105
P0105 Code: Manifold Absolute Pressure Sensor Circuit
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.