MAP SENSOR
MAP Sensor For 07-18 6.7L Cummins
If your car starts burning too much fuel or running roughly, it can be frustrating trying to determine the cause, especially if there aren’t any other issues that pop up at the same time. That can be the case with issues stemming from your vehicle’s MAP sensor, but there’s a decent chance that the part isn’t at the top of your bucket of automotive knowledge.
What Is a MAP Sensor?
Your car’s MAP sensor won’t help you find your destination or yell at you when you miss a turn. MAP stands for manifold absolute pressure, and the MAP sensor’s job is to monitor the air that flows into the engine. This allows the vehicle’s computer to tinker with ignition timing, work out air density, and adjust fuel delivery. You may hear the term MAF sensor, which stands for mass airflow sensor. Although similar, MAF sensors monitor air flow instead of air density.
What Happens When The MAP Sensor Starts To Fail?
Because the MAP sensor deals with air and fuel flow, any disruption in its ability to properly monitor the situation can lead to a rough running vehicle. If fuel flow is too strong, you may notice poor fuel economy, but the opposite can happen when the sensor believes less fuel is needed.
You may also experience misfires or detonation, which is when fuel spontaneously combusts in the cylinder at a time other than when the spark plug fires. Just to stress you out a little more, you’ll probably see a check engine light as well. Common error codes when this happens are P0068, P0069, P1106, and P1107.
What Causes MAP Sensors To Fail?
The sensor is composed of both electrical and mechanical components, both of which can cause problems over time. Part of the sensor is formed by a vacuum chamber, which can leak and cause issues. The sensor may also experience issues because of vibrations, heat, and road dirt over time.
How Much Does a Replacement MAP Sensor Cost?
There’s good news here, because MAP sensor replacement won’t break the bank. In most cases, the sensor should be able to be replaced for $300 or less. The part itself makes up most of that cost, at up to $175 or more.