P0106
MAP Sensor Range/Performance
medium
i Description
The Manifold Absolute Pressure (MAP) sensor is providing readings outside the expected range for current engine conditions. The MAP sensor measures intake manifold vacuum/pressure and is used by the ECU to calculate engine load and fuel delivery.
? Common Causes
- Vacuum leak in intake manifold
- Faulty MAP sensor
- Blocked or leaking vacuum hose to MAP sensor
- Carbon build-up in intake manifold
- Faulty barometric pressure reading
! Symptoms
- Check engine light
- Rough idle
- Poor acceleration
- Increased fuel consumption
- Engine surging
# Diagnostic Steps
- Inspect vacuum hose to MAP sensor for cracks or disconnections
- Test MAP sensor output at key-on engine-off (should read barometric pressure)
- Compare MAP reading to known-good values at idle (~30-40 kPa)
- Check for vacuum leaks with smoke test
- Replace MAP sensor if readings are erratic
⚙ Typical Fix
Replace the MAP sensor or repair the vacuum line feeding it.
Parts Needed
MAP sensor, Vacuum hose
Estimated Cost
$50-$250
↔ Related Codes
Q Frequently Asked Questions
Yes, but the engine may idle roughly and fuel economy will suffer. Not dangerous in the short term.
Yes. The MAP sensor is usually easy to access — often just a single bolt and a plug. Replacement takes 15 minutes.
MAP sensors are $30-$100 for most vehicles. Mechanic labour adds $50-$100.
☞ Learn More
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