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MAP (Manifold Absolute Pressure) sensor

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Symptoms of a Bad or Failing Manifold Absolute Pressure Sensor (MAP Sensor)
Common signs include excessive fuel consumption, lack of power, and failing an emissions test.
How Are Sensors Used to Improve a Car’s Performance?
The feeling of driving down the interstate or a desolate country road with your foot on the pedal as you feel the smooth way your car handles is incomparable. There’s just nothing quite like...
How Your ECU Uses Sensor Data
When you get upset with your car and start to think it has a mind of its own, you’re not too far off from the truth. The engine control unit (ECU) is responsible for a...
How to Buy Good Quality Sensors
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What Happens to Sensors If They Are Dirty?
If something’s malfunctioning on your vehicle and you take it to a mechanic, the first thing they'll look at the sensor that has an impact on the problem. Checking to make sure the sensor...
How Long Does a Manifold Absolute Pressure Sensor (MAP Sensor) Last?
Most car owners are unaware about just how important their fuel and air mixture is to the performance that they enjoy. Without a fully regulated air and fuel system, your...
How Do Sensors Get Dirty or Damaged?
Sensors play an integral role in the performance of your car’s engine. When one sensor stops working, it can cause the entire system to malfunction. The diagnostic computer relies on the information provided...
How to Replace a Manifold Absolute Pressure (MAP) Sensor
Signs of a faulty manifold absolute pressure sensor include excessive fuel use and lack of power with your car. You may also fail an emissions test.

Related questions

Question
No power to the MAP sensor and getting a code P0107.
Hi there. Trace the wires to the bulk wiring harness and check continuity from the wire to the end of the plug. If there is resistance, then disconnect the battery and remove the wiring harness from the computer and check...
Question
While driving my engine stutters and tries to cut out at 4000 rpm.
Hi there. The engine is cutting out for a high back pressure build up in the exhaust system. The catalytic converter or muffler could be plugged up causing the engine to create too much back pressure and when the engine...
Question
Rough idle and RPM fluctuation
This may be a sign of a faulty MAP sensor. The Manifold Absolute Pressure (MAP) sensor senses engine load and generates a signal that is proportional to the amount of vacuum in the intake manifold. The engine computer then uses...
Question
Automatic car stalls when put in gear
The internal transmission seals are leaking pressure to reverse and forward gears at the same time and lock up transmission then stalls the engine. You will need to have a pressure test on the transmission to see if the leak...
Question
Low idle when stopped unless the a/c is on or i shift into neutral
Due to the change in load put on the motor when shifting into gear vs neutral and the change in load when the a/c is on vs not on, this may suggest you have a bad MAP sensor. Both of...
Question
it idles fines in park, but cuts out in gear.
It sounds like you may have a faulty MAP sensor. The Manifold Absolute Pressure (MAP) sensor senses engine load and generates a signal that is proportional to the amount of vacuum in the intake manifold. The engine computer then uses...
Question
The car stalls occasionally as if the fuel is not been pumped
It sounds like you may have a fuel supply issue that corresponds to the load put on the motor when you turn the A/C on. This may be related to a faulty MAP sensor. The Manifold Absolute Pressure (MAP) sensor...
Question
Can I drive my car with a bad MAP sensor?
The Manifold Absolute Pressure (MAP) sensor is primarily used to provide fuel percentages to the intake manifold. If it's damaged, it typically causes no problems except for excessive fuel consumption and loss of engine power. It should be OK to...
Question
The engine RPMs drop and it stalls
This may be a sign of a faulty MAP sensor. The Manifold Absolute Pressure (MAP) sensor is a key sensor because it senses engine load. The sensor generates a signal that is proportional to the amount of vacuum in the...
Question
I have a Shogun 3.2 did. The mut scanner from a friend reveals a fault code 35 and says the engine rpm at 3000 and 330 n/m.
Hi there. The fault code 35 reveals that the O2 sensor bank one (upstream sensor) has picked up an issue with the emission quality of the exhaust. This means that the engine could be lean or rich in fuel mixture....
Question
My car keeps cutting off when I put it in reverse and sometimes when it idles.
Hi There, Based upon what you are describing and how the car responds to load, it sounds like you may have a faulty MAP sensor. The Manifold Absolute Pressure (MAP) sensor senses engine load and generates a signal that is...
Question
My Check Engine Light came on and reads the code P0108. What is the problem?
Hello. The code P0108 means the manifold absolute pressure (MAP) circuit is detecting a high input voltage. The PCM and MAP sensor communicate through a 5 volt wire that changes voltages as the sensor's reading changes. When the sensor detects...
Question
My truck shakes while idling when the heat, AC and in-cab fan are on
This may be a sign of a faulty MAP sensor. The Manifold Absolute Pressure (MAP) sensor senses engine load and generates a signal that is proportional to the amount of vacuum in the intake manifold. The engine computer then uses...
Question
My car lacks power and shakes and stalls.
This may be a sign of a faulty MAP sensor. The Manifold Absolute Pressure (MAP) sensor senses engine load and generates a signal that is proportional to the amount of vacuum in the intake manifold. The engine computer then uses...
Question
P0107 MAP Sensor OBD code
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...
Question
Bucking
This may be a sign of a faulty MAP sensor. The Manifold Absolute Pressure (MAP) sensor senses engine load and generates a signal that is proportional to the amount of vacuum in the intake manifold. The engine computer then uses...
Question
Low idle stalling out
This suggests that the low idle problem may be related to a faulty MAP sensor since the symptoms you describe point to the low idle issue when the engine is under a load when applying the brakes at idle. The...
Question
Vehicle starts sometimes, but dies and won't restart.
To clarify, the year (1978) of the Chevy Suburban in question you are asking about refers to some EFI terms that a vehicle of this year would not have otherwise come with from the factory. The answer below assumes this...
Question
Car starts and run suddenly it shuts off. It turns back runs and shuts off again
Depending on what speed the stalling tends to occur, this may be a couple of different possibilities. If this happens at lower speeds or idle, this may be a dirty or faulty idle air control valve. I this happens at...
Question
Where is MAP sensor located? 2002 Isuzu Turbo diesel Rodeo
Hello - the MAP sensor is located on the intake manifold, near the back. It has a flat, 3-wire electrical connector. For assistance, I recommend a MAP sensor replacement service by a mobile, professional mechanic, such as one from YourMechanic,...

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