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P0107

Manifold Absolute Pressure/Barometric Pressure Sensor Circuit Low

The engine computer is seeing a very low signal from the MAP or barometric pressure sensor. This usually means a wiring, connector, or sensor problem. It can cause poor running, hard starting, stalling, or bad fuel economy.

Severity3/5 Moderate
Can I drive?⚠ With caution

You may be able to drive short distances, but engine performance can be poor and the engine may stall. Get it checked soon, especially if the engine runs rough or loses power.

DIY
$20–$120
Shop
$120–$350
Difficulty
intermediate

What It Means

P0107 means the PCM has detected a MAP sensor or BARO sensor signal below the expected range. The sensor may be reading too little pressure, or the circuit may have an electrical fault such as an open ground, damaged wiring, corrosion, or a failed sensor. On some vehicles the MAP sensor is combined with the BARO function, while on others the barometric pressure reading comes from another source in the PCM.

Symptoms

Common Causes

1. Bad MAP sensor or combined MAP/BARO sensorhigh
2. Loose, corroded, or damaged connector at the sensorhigh
3. Broken, shorted, or rubbed-through wiring in the sensor circuithigh
4. Low reference voltage or poor ground to the sensormedium
5. Vacuum leak or disconnected MAP sensor hose on engines that use a vacuum linemedium
6. Clogged port or contamination at the MAP sensormedium
7. PCM issue or software problemlow

Related Codes

FAQ

Can a dirty MAP sensor cause P0107?

Yes. Dirt, oil, or carbon buildup can block the sensor port and lower the signal reading.

Will P0107 cause poor gas mileage?

Yes. The engine computer may calculate fuel delivery incorrectly, which can reduce fuel economy.

Can I reset P0107 by clearing the code?

You can clear it, but the code will usually return if the sensor, wiring, or vacuum problem is still present.

Is P0107 always a bad sensor?

No. Wiring faults, connector problems, vacuum hose issues, and low reference voltage are also common causes.