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On-board diagnostic (OBD) codes help mechanics and vehicle owners identify possible issues in a vehicle. But before you can resolve these problems, it’s important to know what these codes mean.

Code P0237 is one of many trouble codes that can be logged and retrieved from the OBD system. Here is some information to help you understand what getting this code can mean for your vehicle.

What Does the P0237 Code Mean?

Turbocharger Boost Sensor
The P0237 code is logged when the powertrain control module (PCM) detects an incorrect signal from the boost pressure sensor.

Diagnostic trouble code (DTC) P0237 stands for “Turbocharger/Supercharger Boost Sensor “A” Circuit Low.” This code is logged when the powertrain control module (PCM) detects an incorrect signal from the boost pressure sensor.

The PCM closely observes boost pressure with a sensor called the manifold absolute pressure sensor (MAP). The boost pressure sensor tells the PCM how much boost is actually being created by the turbocharger.

When boost pressure is high the voltage signal is high. When boost pressure is low the voltage is low. The PCM uses the boost control solenoid to control the amount of boost pressure that is produced by the turbocharger while simultaneously using the boost pressure sensor to verify that the boost pressure is correct.

Error code P0237 sets when the PCM detects a low voltage signal indicating low boost pressure when a high pressure command has been sent to the boost control solenoid “A.”

mechanic running diagnostic equipment gets P0237 code
The definition of code P0237 might be different depending on the vehicle manufacturer.

Depending on the severity of the problem, related error codes might also be stored with this DTC. Code P0237 is similar to error codes P0235 and P0236.

Note: The definition of code P0237 might be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.

What are the Common Causes of the P0237 Code?

What are the Common Symptoms of the P0237 Code?

How to Diagnose the P0237 Code

Different makes and models can set the error code P0237. But this does not mean that there is a one-size-fits-all approach to diagnosing its underlying cause. The steps for troubleshooting this code will vary depending on your vehicle.

Check out the video below to get an idea of what the diagnostic process for this code might involve:

How to Fix the P0237 Code

Code P0237 shares similar triggers and symptoms with other engine codes. However, the appropriate diagnostic and repair procedure will depend on the specifications of your vehicle. So if you’re unfamiliar with auto repair, it’s best to leave the job to a mechanic.

If you’re considering troubleshooting this code on your own, it’s a good idea to refresh your automotive knowledge before attempting any fixes. Consult a vehicle-specific repair manual or an online repair database to learn the appropriate diagnostic procedures for this code.

Any information provided on this Website is for informational purposes only and is not intended to replace consultation with a professional mechanic.

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