P0106

Manifold Absolute Pressure/Barometric Pressure Sensor Circuit Range/Performance

Fuel & air metering Generic OBD-II High

What it means

P0106 means the manifold absolute pressure (MAP) or barometric pressure sensor is giving a reading that's electrically valid but doesn't match engine conditions. The ECM uses that pressure to calculate engine load and fuel; when it's off — often from a cracked vacuum hose, a clogged port, or a drifting sensor — the mixture is wrong and the engine can idle rough, hesitate, and lose economy.

High

Can I keep driving? Usually drivable, but expect hesitation, rough idle, and poor economy because the ECM is fueling from a bad pressure reading — have it checked soon.

Real-world scan data

Seen in

1,396

scans in the past year

Found in

0.2%

of scans

0.4%

of scans that found faults

Appears alongside · share of P0106 scans

P0300in 24.1% of scans

P0420in 23.3% of scans

P0302in 22.8% of scans

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Check-engine light on
Rough idle or hesitation on acceleration
Reduced power or poor throttle response
Poor fuel economy

Common causes

Most likely first

Failed or drifting MAP/BARO sensorLikely
Cracked or disconnected vacuum hose to the MAP sensorCommon
Carbon-clogged MAP port or intake passageCommon
Vacuum leak affecting manifold pressureLess often
Wiring or connector fault in the sensor circuitLess often
Failed engine control module (rare)Less often

How to diagnose & fix

Work through it in order

Read freeze-frame data and compare the MAP reading against actual manifold vacuum / barometric pressure.
Check the MAP sensor's vacuum hose and port for cracks, disconnection, or carbon.
Inspect the connector and wiring for damage or corrosion.
Test for intake vacuum leaks that would skew the pressure reading.
If the sensor reads out of range with good vacuum and wiring, replace it. Clear and re-test.

FAQ

Quick answers

Is it safe to drive with P0106?+

Brief trips are usually fine, but a wrong pressure signal makes fueling inaccurate, so the engine can run rough and lose economy. Fix it soon.

Can I just clear P0106?+

It comes back once the ECM re-checks the sensor unless the hose, clogged port, wiring, or sensor causing the bad reading is repaired.

Read & clear P0106 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX