Q: P0107 MAP Sensor OBD code

asked by on

Hi, 1999 Saturn SL2 with 180K on it. I am getting OBD P0107 MAP Sensor error. I am getting 5V on the supply wire (when the key is turned). I also get 5V on the signal wire, and the voltage drops when I apply a vacuum. The ground wire checks good. I have good reason to believe that the MAP sensor is working properly. I am not sure what to do next to diagnose the issue. The car runs with no power. I am trying to decide if it's worth spending money on, or getting a new ride.

My car has 180000 miles.
My car has an automatic transmission.

Hello - if this condition came on slowly - period of weeks or months - I would be checking for low compression and/or a clogged catalytic converter (especially if this is the original converter). Low airflow under a load may be causing an abnormality with the MAP sensor because the engine isn’t pulling enough vacuum. If this came on suddenly, I would be looking at a bad connection or a wiring problem if the MAP sensor checks out as you describe. I would recommend having a loss of power inspection completed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. P0107 MAP Sensor OBD code

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Brakes not working at all - 1999 Jeep Wrangler

If your master cylinder is not losing fluid and you tried bleeding the system then your master cylinder is bad. The internal rubber cups got damaged when you allowed the pedal to go to the floor the first time. You...

Q: Could it be a relay?

It sounds like you may have an evaporative emissions system leak. Your car has a small purge valve with a purge solenoid in the Evaporative Emissions system that controls the venting of fumes from the fuel tank as these fumes...

Q: Car loses power, Check Engine Light is on, codes for EVAP system leak

If you have an air leak in the EVAP system then the MAP sensor will not be able to determine the air density, and the MAF sensor will not be able to determine the volume of air entering the engine...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...