Where is the MAP Sensor on a 6.7 Cummins Engine?

The MAP (Manifold Absolute Pressure) sensor, is an essential part of your car's engine.

It calculates the ideal blend of fuel and air by monitoring the pressure in the intake manifold.

This small, black sensor, located on the driver's side of your 6.7 Cummins engine near the firewall, is important for good engine performance, fuel-saving, and low emissions.

It is important to know where the battery on your vehicle is located. Keep reading to get more details about the 6.7 Cummins Engine MAP sensor.

Intake manifold absolute pressure sensor on isolated background

MAP Sensor Location On A 6.7 Cummins Engine

The MAP sensor in a 6.7 Cummins engine is a small but vital component.

It's tucked away near the intake manifold on the driver's side, close to the firewall, and has two wires protruding from it.

This sensor keeps tabs on air pressure within the intake system, which affect your engine's performance and fuel efficiency.

To keep your engine running at its best, it's important to keep this sensor in good shape.

Handle it carefully when you access it, and don't hesitate to clean or replace it as needed.

Remember, looking after your 6.7 Cummins engine is an investment in its long-term performance.

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Step-by-Step Guide to Find the MAP Sensor on 6.7 Cummins

 The turbocharger is visible on a Cummins diesel engine.

To locate the MAP sensor on a 6.7 Cummins engine, follow these simple steps:

  1. Turn off the engine and ensure it is cool before working near it to prevent burns or accidents.
  2. Pop the hood of your vehicle to access the engine compartment.
  3. Locate the cylinder head on the side of the engine block near the front of the engine.
  4. Find the MAP sensor in the vicinity of the camshaft position sensor and near the intake manifold. It is typically connected to the engine control module (ECM) via a cable.

By following these steps, you will successfully locate the MAP sensor on a 6.7 Cummins engine.

Problems Related To MAP Sensor

A man bought two MAP sensors

A faulty or dirty MAP sensor on a 6.7 Cummins engine can cause several issues affecting engine performance.

Here's a deeper look into the common problems caused by a faulty or dirty MAP sensor in a 6.7 Cummins engine, and some preventative measures:

Poor Fuel Economy

The electronic engine control unit of the car installed in the engine compartment. Car software

When the MAP sensor isn't working properly, it can send incorrect information to the engine control module (ECM).

This can result in the ECM thinking the engine needs more fuel than it actually does, leading to increased fuel consumption.


Regularly clean the MAP sensor to ensure it's providing accurate readings.
Using an electronics cleaner is a safe option.

Additionally, ensure the connections are secure and there's no damage to the wires.

Be sure to read: How Much Oil Does A 6.7 Cummins Take?

Reduced Power Output

A malfunctioning MAP sensor can also cause reduced power output.

Since the MAP sensor helps determine the right air-fuel mixture for optimal combustion, any inaccuracy can lead to suboptimal combustion, causing the engine to produce less power.


Apart from cleaning the sensor and inspecting the wiring, you should also check for air leaks in the intake system.

Air leaks can affect the pressure readings and lead to inaccurate data being sent to the ECM.

Turbo Out of Range Code During Diagnostics

Turbocharger of car

This error code indicates that the turbocharger isn't functioning within its expected range.

A faulty MAP sensor can cause this issue because it monitors the air pressure that affects the turbocharger's operation.


Regularly cleaning and inspecting the MAP sensor is vital.

Keeping it free from dirt and damage ensures accurate air pressure monitoring for proper turbocharger performance.

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Symptoms of a Bad MAP Sensor

A man bought two MAP sensors in order to fix his car

A bad MAP sensor can cause several issues in a 6.7 Cummins engine.

One of the most common signs is poor fuel consumption.

This can lead to an illuminated check engine light on the dashboard, alerting the driver of a potential problem.

Additionally, a malfunctioning MAP sensor may cause the engine to misfire or stall. This can result in rough idling or difficulty starting the vehicle.

To maintain engine performance and avoid possible damage, it is crucial to address any issues related to a bad MAP sensor promptly.

How to Replace a MAP Sensor

Changing the MAP sensor in a 6.7 Cummins engine is easy, just follow these steps:

  1. Find the MAP sensor: It's on the driver's side of the engine, near the intake manifold. Make sure the engine is off and has cooled down before you start working.
  2. Disconnect the battery: Remove the negative battery cable first to avoid any electrical accidents.
  3. Unplug the sensor: Take off the electrical connector from the MAP sensor.
  4. Remove the sensor: Using the right socket or wrench, undo the bolt that holds the sensor in place.
    Gently wiggle and pull it out, taking care not to damage the sensor or nearby parts.
  5. Clean the port: Before putting in the new sensor, give the sensor port a good clean to ensure you get a snug fit.
  6. Install the new sensor: Slide the new sensor into the port and secure it with the bolt. Don't overdo the tightening.
    Then, reconnect the electrical connector.
  7. Reconnect the battery: Put the negative battery cable back.
  8. Test it out: Start the engine, and check for any error messages or performance issues to confirm the sensor was installed correctly.

Maintaining Your MAP Sensor

A man bought two MAP sensors (03G906051M) in order to fix his car

Regularly maintaining your 6.7 Cummins engine's map sensor is essential for optimal performance.

To keep the map sensor functioning properly, occasional cleaning is necessary.

Here's how to do it:

  1. Get the right cleaner: Use electronics cleaner for this job. It's specially designed to clean without leaving any residue.
  2. Be gentle: The MAP sensor has a fragile wire inside, so handle it with care.
  3. Clean: Spray the electronics cleaner on the MAP sensor. Give it a few sprays and make sure you don't touch the wire.
  4. Dry it: Let the sensor air-dry. Don't use a cloth or anything else to speed up the process, as you might accidentally damage the wire.
  5. Reinstall: Once it's dry, carefully put the MAP sensor back in its place.

Cleaning your MAP sensor every now and then can help it work better and last longer. Just remember to be gentle and use the right cleaner.

Check out this tutorial on cleaning or replacing your map sensor to ensure your 6.7 Cummins engine runs smoothly:


In some situations, replacing the map sensor might be required. A faulty sensor can cause rough idling or reduced engine performance.

In Closing

Recognizing the location of the 6.7 Cummins MAP sensor can be valuable information for troubleshooting and maintaining your engine's performance.

Don't hesitate to call a professional if you have a faulty battery and can't deal with it alone.

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