Skip the auto shop - Our mechanics make house calls

Q: Loss of power my tool says map sencors is bad burning rich

asked by on

The car has lost its power my scan tool says po0105 it's the map sensor it's burning rich i just want to make sure that's the prob and the cat is not plugged up I checked

My car has 187000 miles.
My car has an automatic transmission.

Hello and thank you for contacting YourMechanic. If the engine light is on for code P0105, then the computer has lost communication from the MAP (Manifold Absolute Pressure) sensor. Check the harness to the sensor for any corrosion and look at the pins inside the sensor. Make sure that the pins are not bent or broken. Get a digital meter and check for resistance on the MAP sensor with the engine off and engine running. If there is no resistance, then the sensor has failed. If there is resistance, check to see if the resistance is changing as the engine changes state from off to running. If the resistance does not change, then the sensor has failed. If the resistance is changing with the engine off and the engine on, then there could be a break in the harness to the computer. The sensor may fail as it gets to a specific temperature. I recommend replacing the sensor if you are not getting a resistance or a resistance is not changing. If you need assistance in diagnosing your engine, I recommend having a professional from YourMechanic replace your MAP sensor if necessary.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Having a problem refueling

The cause of this is the vent to your fuel tank is plugged. In order for fuel to enter the tank, air must be moved out or pressure builds in the tank indicating to the fuel pump the tank is...

Q: Shop says tie rods, wheel bearings and motor mounts are going bad on a used Bonneville-salesman says not true because no noise

Based on data from the Kelly Blue Book database of used car transactions, if the car were in good condition (which it isn't , obviously), it's worth about $2,000. Given the number, and extent, of required repairs, $2,000 would be...

Q: BMW e90 320d jerking at pull away, and in 2nd gear, reduced power, turbo sound has changed.

Hi there. Since this occurred right after driving in some dusty conditions, I would check the air filter first. If the air filter is dirty then this will occur. If the air filter is fine, then I would also clean...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...