Map Sensor Symptoms & Replacement Cost

Map Sensor

Your car engine will never run unless air, fuel and a spark come together to make the ignition process happen. Today’s engines function under the same basic principle, it’s just that they are more complex, requiring sophisticated measuring of different elements to ensure proper fuel combustion without having the engine damaged. The manifold absolute pressure (MAP) sensor is responsible for some of these regulations.

What Does It Do

The MAP sensor of a vehicle registers

  • air quantity entering via the manifold
  • air temperature
  • number of revolutions in the engine

This information, goes to the Powertrain Control Module (PCM) of the vehicle for the main purpose of engine load input. This way the PCM uses the MAP sensor lectures, among others, in order to properly calculate and control the correct amount of fuel injection into the cylinders.

Because the majority of current engines are fuel injected, a MAP sensor is required for proper functioning and performance. However, some automobile artisans also use the MAP sensor as a diagnostic tool, allowing mechanics to analyze the performance of the EGR valve.

map sensor

Symptoms

Having a faulty MAP sensor won’t disable your car right away, however it is highly recommended that proper diagnosis and replacement gets done quickly.

Driving with a failing or failed MAP sensor can bring about the following symptoms:

  • Your engine will consume excessive fuel due to the engine being,
    • Rich: There’s more fuel than air coming into the engine
    • Lean: The quantity of air is higher than the quantity of fuel
  • The power drops
  • The car will fail the emission test
  • Some vacuum leaks might be present

If your engine is not fuel injected, you probably do not have a MAP sensor.

Keep in mind that a failing MAP sensor will normally cause the Check Engine light to bright up. However, it is fairly impossible to notice the failure by visual inspection, that’s why a professional mechanic is required to properly diagnose and replace the sensor.

 

 

Costs

Replacement costs vary from vehicle to vehicle  and from auto repair shop to another.

Here’s a table that shows the replacement costs of the MAP sensor per auto repair shop.

Your Mechanic

  • Parts & Labour
  • 12 Months warranty

Total price: $109-$215

Midas

  • Parts & Labour
  • 12 Months warranty

Total Price: $115-$226

Mr. Tire

  • Parts & Labour
  • 12 Months warranty

Total Price: $104-$245

NAPA

  • Parts & Labour
  • 24 Months warranty

Total Price: $119-$227

Walmart

  • Parts
  • Limited warranty

Total Price: $55-$197

Amazon

  • Parts
  • Limited warranty

Total Price: $48-$215

 

Here is a comparison of the replacement costs per vehicle.

Ford F-Series

  • Labor: $26-$34
  • Parts: $93-$181

Total price: $119-$215

Chevrolet Silverado

  • Labor: $26-$34
  • Parts: $101-$122

Total price: $127-$156

Ford Focus

  • Labor: $26-$34
  • Parts: $93-$181

Total price: $119-$215

Toyota Camry

  • Labor: $17-$23
  • Parts: $112-$180

Total price: $129-$203

Toyota Corolla

  • Labor: $17-$23
  • Price: $112-$180

Total price: $129-$203

Nissan Altima

  • Labor: $44-$56
  • Parts: $112-$180

Total price: $129-$203

Honda CR-V

  • Labor: $52-$67
  • Parts: $69-$91

Total price: $121-$158

Honda Civic

  • Labor: $52-$67
  • Parts: $69-$91

Total price: $121-$158

Honda Accord

  • Labor: $52-$67
  • Parts: $69-$91

Total price: $121-$158

Ford Fusion

  • Labors: $26-$34
  • Parts: $93-$181

Total price: $119-$215

Replacement Process

The replacement process of the MAP sensor consists of:

  • Raising and supporting the vehicle
  • Removing the faulty MAP sensor
  • Carefully cleaning the area and placing the new MAP sensor
  • Computer testing and removing of the failure codes
  • Testing the vehicle to ensure proper performance

Have any doubts?  please visit our website for further information.

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