Code P0238?

Hi,

The code is related to the turbocharger boost pressure sensor. Either the sensor is faulty or there is a wiring issue. See pic 1 below.

I attached the diagnostics specific to this code starting with pic 2. Don't be overwhelmed by how many steps are listed. Based on the results of each test determines where you move next or how to repair the problem.

Take a look through them and let me know if you are comfortable performing them.

Let me know.

Joe

See pics below.

If you have changed the MAP (Manifold Absolute Pressure) sensor on your 2016 Ford Mustang and are still experiencing an error, there are several other possible causes you should consider checking. Some common reasons for a MAP sensor error include:

Vacuum leaks - a vacuum leak can cause the MAP sensor to read incorrect pressure values and trigger an error.

Dirty or clogged air filter - a dirty air filter can restrict air flow and affect the accuracy of the MAP sensor readings.

Wiring issues - damaged or corroded wiring can interfere with the MAP sensor signal and cause an error.

PCM (Powertrain Control Module) failure - a failed PCM can affect the MAP sensor readings and trigger an error.

Fuel delivery issues - a clogged fuel injector, a weak fuel pump, or low fuel pressure can all impact the MAP sensor readings and trigger an error.

How would I determine whether the wires are corroded or damaged? As well as the PCM?

Hi,

As far as corrosion, the only thing you can do is disconnect the connector to see if they are damaged or corroded. Ken is correct when indicating that corrosion can adversely affect the sensor signal. Anything that creates resistance will change the end result. As far as testing wiring, you can use a multimeter to check continuity.

As far as the PCM, often times a diagnostic trouble code will be prompted indicating an issue. With the code, you diagnose the possible cause by testing.

Let us know what we can do to help.

Take care,

Joe