P0107 code meaning
Manifold Absolute Pressure/Barometric Pressure Sensor Circuit Low
Powertrain system Generic code P01xx codes Check engine light
What P0107 means
The manifold absolute pressure (MAP) sensor measures the pressure behind the throttle; on vehicles without a separate barometric sensor it also supplies the ambient pressure, read at key-on or wide-open throttle – hence 'MAP/BARO'. It is a three-wire sensor with 5 V reference, ground and signal. P0107 means the signal voltage is below its lower limit. 'Low' refers to the voltage, not to a real low pressure: typically the signal wire is grounded, the signal or 5 V reference is open, or the sensor has failed. A short on another sensor sharing the same reference can pull it down too, so GM often sees several codes at once. Documented limits: GM below 3.3 % of 5 V (about 0.17 V), GM/Saab 2.0T below 0.19 V for 4 s, Ford gasoline below 0.19 V for 5 s, Ford diesel below 0.1 V. GM gasoline needs two trips, GM diesel one. A modelled value replaces the reading.
P0107 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyEasy, DIY possible
- Typical labor0.3 to 1 hours
- Clears after repairAfter a drive cycle
Symptoms of P0107
- Check engine light on
- Hard starting, rough idle, stalling possible
- Wrong mixture from substitute value, higher consumption
- Loss of power or limp mode on turbo and diesel engines
Common causes of P0107
- Most likelyConnector unplugged or corroded, signal or reference wire open
- Most likelySignal wire shorted to ground (chafing)
- Possible5 V reference shorted by another faulty sensor on the same circuit
- PossibleMAP sensor failed internally
- Less likelyEngine control module faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Manifold absolute pressure sensorSensor wiringSensor reference voltage
What each part of P0107 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 1 | Area: fuel and air metering. |
| 07 | The exact fault in that area. |
What to do next
- Note P0107 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0107
What does P0107 mean?
P0107 means "Manifold Absolute Pressure/Barometric Pressure Sensor Circuit Low". The manifold absolute pressure (MAP) sensor measures the pressure behind the throttle; on vehicles without a separate barometric sensor it also supplies the ambient pressure, read at key-on or wide-open throttle – hence 'MAP/BARO'. It is a generic code, so it means the same on every make.
Is it safe to drive with P0107?
Drive gently and only to a workshop. With P0107 the car can go into limp mode (reduced power) to protect itself.
Will P0107 fail an emissions test?
Yes, it can. P0107 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0107 to fix?
Difficulty: easy. A typical repair takes 0.3 to 1 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P0107 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.