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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 of manifold absolute pressure sensor problems include excessive fuel consumption, lack of power, and failing an emissions test.
How Are Sensors Used to Improve a Car’s Performance?
Modern vehicles utilize a series of car sensors to improve performance and reduce emissions. The oxygen sensor helps reduce tailpipe emissions.
How Your ECU Uses Sensor Data
Today’s modern vehicles are made up of anywhere from one to seven computers that assist with the car’s day to day functions. An engine control unit (ECU), is a computer that similar to that of...
How to Buy Good Quality Sensors
Sensors for autos have many of the same characteristics that other types of sensors do – they are created to detect a signal, respond to chemical or physical variations such as distance or...
What Happens to Sensors if They are Dirty?
Car sensors can get dirty with normal use. Symptoms of dirty sensors include reduced engine power, worse gas mileage, or an engine that hesitates.
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?
Car sensors measure and relay vital information to the ECU. Some sensors can get dirty from normal use, or fail if the car overheats or has a problem.
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
Automatic car stalls when put in gear
Hi There, It sounds like you may have a faulty MAP sensor. The Manifold Absolute Pressure (MAP) sensor detects engine load and generates a signal that is proportional to the amount of vacuum in the intake manifold. The ECU uses...
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
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
Where do I find the map sensor on my 2006 Cadillac SRX.
Hello, thank you for writing in. On your particular vehicle, the MAP (manifold absolute pressure) sensor is located on the firewall. This is why they refer to it as a "firewall mounted MAP sensor". The firewall is the wall between...
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,...
Question
Car will only go if you slowly press the pedal for a slow take off 1986 Oldsmobile Delta 88
Hi there - most likely, your hesitation is caused by either the manifold air pressure sensor or the throttle position sensor failing. Whichever is malfunctioning is not sending a signal to the engine computer to indicate the accelerator pedal is...
Question
Testing the frequency of my MAP Sensor, it appears to adjust to pressure, but is not in range.
If you are getting a reading of 89HZ out of the MAP sensor with the key on then this is an indication that you are above 15,000 feet in elevation. This would cause the computer to run your vehicle with...
Question
How many map sensors are in my 2011 Sonata 2.0t?
Hello. There is only one MAP sensor on your vehicle. If you replaced it and the code has not gone away, or you are still experiencing the same symptoms, there is likely something else going on with the circuit. Make...
Question
Chrysler Sebring keeps setting codes even after replacing several parts
It sounds like you may have fixed the catalytic converter problem, but still have more issues. The codes you have now are as follows: P0101 MAF Circuit Range/Performance, P0202 Cylinder #2 Injector Circuit Malfunction and MAP Sensor Input High. These...
Question
Where is the map sensor on a 2001 Montero Sport
Hello - the Manifold Absolute Pressure (MAP) sensor is located on top of the intake manifold, in the middle. This will be between the valve cover and the firewall that separates the engine compartment from the passenger compartment. It's a...
Question
Would a map sensor make your car not hold idle and die , I have a 2000 Dodge Dakota with a 4.7 v8
Yes a MAP sensor can cause this problem. The sensor controls how much load is on the engine and will cause the rich running condition. I have never known one that can be cleaned and fix the problem. I recommend...
Question
DTC code P0106
Hello, thank you for writing in. The most likely cause of the issue is a bad MAP sensor. Before changing it out, you will want to check for any other obvious signs of problems. These would include frayed or damaged...
Question
Location for a map sensor for a 2008 Holden Viva
Hi there - the MAP (manifold absolute pressure) sensor is located midway, on the top of the straight, "tube-like" portion of the intake manifold. This "tube" sits above the "octopus-like" 4 air tubes into the engine. It is attached by...

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