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.

A: Hello and thank you for contacting YourMech...

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: Failing fan clutch symptoms

What you described is happening is normal cooling fan clutch operation. When you first start the engine the cooling fan clutch will be in the full engaged position and may take a minute for the internal fluid to move back...

Q: The car's service engine soon light is on and the car shuts down going up hill.

Hi there: If your steering wheel locked up on you while driving, this could be a serious safety issue that should be inspected by a professional mobile mechanic as soon as possible. Sometimes service lights illuminated while driving are a...

Q: Loss of power and turbo smoking.

It sounds as if your turbo not only has a gasket leaking but that it has also got oil inside of it. Since the turbo is connected to the exhaust it becomes very hot. When oil manages to get inside...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.