P0108 is a generic OBD-II problem code. It suggests your Ford Freestyle’s MAP (manifold absolute pressure) sensor’s voltage analysis is exterior of the common operating range. The voltage is as well high. It’s most commonly caused by a poor MAP sensor, wiring issue, or vacuum leak.

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The MAP sensor actions the air press coming into your Freestyle’s engine and also sends the signal to the ECM. The does this by sending a voltage ranging from 1 come 5 volts. 1 volt would certainly be idle speed. The signal must be in ~ 5 volts at any time the car is at large open throttle. P0108 is prompted whenever the signal from this cable is an ext THAN 5 volts, which shouldn’t happen.

P0108 can additionally trigger if the ECM thinks the voltage coming from the MAP sensor is greater than it need to be at any type of given time.


P0108 fast Facts

P0108 is caused when there’s too lot voltage comes from the MAP sensor to the ECM. Most frequently caused by a negative MAP sensor. Vacuum or wiring worry are the following most typical causes. Usually outcomes in a turbulent running vehicle. A voltage meter is required to diagnose the MAP sensor.

P0108 Symptoms: Ford Freestyle

P0108 is constantly going to do much more than just trigger the examine engine light. The MAP sensor is crucial to a well running vehicle. If it’s gone bad, it’ll really influence drivability.

Here space the most common symptoms of P0108:

bad Gas Mileage unstable Running/Stalling Engine engine Won’t start at every check Engine light


Ford Freestyle P0108 reasons + Diagnosis

When diagnosing this code, if her Freestyle is to run fine you should first reset the code and take the car out and try to give birth the problem. It may have actually just to be a one time thing.

Map Sensor

The an initial thing the you need to do is test the MAP sensor itself. A an excellent voltmeter is important for this step. You can gain them nice cheap from any type of hardware save or Amazon. The analysis from the voltmeter have to be approximately 1 to 1.5 volts in ~ idle. If it’s higher, you may need a brand-new MAP sensor.

Here’s a pretty good YouTube video that shows exactly how you would certainly go around testing the sensor:

Vacuum Leak

A vacuum leak is a really common factor that P0108 is triggered. If over there isn’t sufficient vacuum going to the MAP sensor it’ll give a higher voltage analysis than the operating conditions suggest have to be there.

The vacuum it is provided to the MAP sensor might have a leak, or there can be a vacuum leak approximately the engine together a whole. Examine all the vacuum lines on the engine. Inspect to watch if any of them appear to it is in brittle, melted or cracked. If lock are, replace them and see if the solves the problem.

Another place that vacuum have the right to leak native the intake manifold. Here’s a solid post from Popular Mechanics on how to track under a vacuum leak.

Wiring Issues

The most basic thing that you have the right to do as soon as P0108 is triggered is check your Freestyle’s wiring harness. Is it plugged in to the MAP Sensor tightly? Does the have any visible indications of damage? follow it as far as you can and also make sure. It’s walking to have a ground wire. Make sure that floor is plugged in tightly. Here’s a an excellent video on just how to discover a short in a vehicle.


While the three causes listed above space the most usual reasons P0108 reflects up, there are other reasons together well. If her Freestyle’s motor is worn out and also isn’t creating a an excellent vacuum anymore, that’ll cause the MAP sensor to output a greater voltage at all times and also throw the code.

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It’s also feasible that an engine that is misfiring or has low fuel push can create this code as well. It would should be a pretty remarkable misfire. You should likewise get P0300 or P030X (X representing the cylinder number of the misfire) through P0108 if misfiring to be the case.

Conclusion: P0108 Freestyle

While the is most likely to it is in the MAP sensor itself that is causing P0108 in her Ford Freestyle, appropriately identifying the difficulty can conserve you native purchasing and installing a sensor the you don’t need If over there is anything that you would choose to add, please leaving a comment below. Good luck!