P0106: Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance
Can you still drive? Yes, but the engine may run rough or surge. The vehicle is safe to drive short distances but should be repaired to prevent poor fuel economy and potential catalyst damage.
What Does P0106 Mean?
Code P0106 indicates that the manifold absolute pressure (MAP) sensor is reading outside of the expected range for the current engine operating conditions. The ECM compares the MAP sensor reading against the throttle position and engine RPM, and triggers P0106 when the values do not correlate. This affects fuel metering and ignition timing calculations.
Need to read your codes?
An OBD-II scanner lets you read and clear diagnostic trouble codes from your vehicle's computer. Most scanners work with any car made after 1996.
Browse OBD-II Scanners on AmazonCommon Causes
- Faulty MAP sensor
- Vacuum leak in the hose connecting MAP sensor to intake manifold
- Clogged or restricted MAP sensor port
- Electrical issue in MAP sensor circuit
- Carbon buildup in throttle body affecting vacuum signal
Symptoms
- Check engine light on
- Rough or surging idle
- Hesitation or stumble on acceleration
- Black smoke from exhaust
- Poor fuel economy
Diagnostic Steps
- 1Read MAP sensor live data at idle and compare to expected values (typically 15-22 inHg vacuum at idle, or approximately 1.0-2.0 volts)
- 2Inspect vacuum hose from MAP sensor to intake for cracks or disconnection
- 3Check MAP sensor connector for corrosion or bent pins
- 4Test MAP sensor voltage output at various vacuum levels using a hand vacuum pump
- 5Clean throttle body and MAP sensor port
- 6Verify barometric pressure reading matches local conditions with key on, engine off
Recommended Parts & Tools
vacuum hose kit
throttle body cleaner
electrical contact cleaner
Estimated Repair Cost
| Type | Estimated Cost |
|---|---|
| Total Repair Cost Range | $50 - $350 |
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Frequently Asked Questions
What does a MAP sensor do?
The MAP sensor measures intake manifold vacuum to help the ECM calculate how much air is entering the engine. This data is critical for determining the correct fuel injection amount and ignition timing.
Can I clean a MAP sensor?
Yes, you can clean a MAP sensor with electronics cleaner or MAF sensor cleaner. Remove it, spray the sensing element gently, and let it dry before reinstalling. This sometimes resolves P0106.
Community Fix Reports
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