P0938 OBD Error Code: Problem & Solutions

<<See All OBD Codes

Whenever you notice an OBD code set in your vehicle, don’t get overworked, this is just a sign that there’s an issue you need to resolve. This is also the reason why the check engine light will also be lit. This P0938 OBD-II code is set by the TCM when it notices that the hydraulic oil temperature sensor is not working as needed.

The clutch of your vehicle is responsible for shifting gears as needed. It does do by engaging and disengaging by using the hydraulic pressure. The temperature of the system is conveyed to the Transmission Control Module by the hydraulic oil temperature sensor. The code P0938 is set when the Hydraulic Oil Temperature Sensor is not as per the default factory specifications set by the vehicle manufacturer.

What causes this problem with the Hydraulic Oil Temperature Sensor Range/Performance?

• Fault in the Hydraulic Oil Temperature Sensor
• The harness of the Hydraulic Oil Temperature Sensor is open or shorted
• Hydraulic Oil Temperature Sensor circuit is showing poor electrical connection
• Failed Transmission Control Module (TCM)

1. Hydraulic Oil Temperature Sensor - Try to fix the problem and see if the P0938 code return, accordingly you will have to replace it.
2. Hydraulic Oil Temperature Sensor Harness - The harness may have damages, try to repair them if possible, otherwise go for a replacement of the harness.
3. Transmission Control Module (TCM) - You can find the perfect TCM replacement for your vehicle on Parts Avatar . We stock a wide range to suit the compatibility needs of different makes and models. Find your today and order!
4. Powertrain Control Module - You may have to replace it if repairs don’t clear P0938 code. Simply order online at Parts Avatar and have it delivered right to your doorstep.
5. Diagnostic Tools - Find the best diagnostic tools to conduct diagnosis for your vehicle. You can purchase from a wide range of brands from us. Order Online easily from the comfort of your home and have it delivered to you anywhere in Canada.
6. Automatic Transmission Module - Try to repair and see if the P0938 code returns, if it does, then you will have to replace it. Buy from Parts Avatar and get free shipping on orders over CAD $99.
7. Engine Control Module - You may have no choice but to replace the ECM module. Opt for the best from brands available at Parts Avatar. We ship across Canada in just a matter of days with no cross border shipping charges or delays!

It is vital to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P0938 here:

Common Symptoms

• Engine Light ON (or Service Engine Soon Warning Light)
• Problem with shifting
• Low fuel economy

Want to correct the Trouble Code P0938? Read these points mentioned below:

• Repair or replace the damaged wiring, connectors, and other electrical components
• Repair or replace the hydraulic oil temperature sensor
• Repair or replace the Automatic Transmission Control Module or TCM
• Repair or replace the PCM module

Parts Avatar Canada is here to solve all your issues related to car parts. We have stocked a wide range of best priced Hydraulic Oil Temperature Sensor, Hydraulic Oil Temperature Sensor Harness, Transmission Control Module (TCM) and a lot more to help you out in fixing your car.

You can resolve the OBD error P0938 easily by following the following steps:

Start off by connecting your diagnostic scanner to the vehicles diagnostic port and retrive all the codes present. Freeze frame the data and start solving them in the order of occurrence. It is important to resolve the preceding codes to the P0938 to rule out if they were responsible for the code to set in first place. Once you have done that, clear the codes and take your vehicle on a test drive to see if the P0938 code resets, if it does, then you have to continue diagnosis starting from inspection of the wiring and electrical circuitry as well as connectors.

The visual inspection has to be thorough and should be done with great patience. You may find wiring that is broken or burned, there may be corrosion or damaged connectors present too. Depending on the condition, you can either opt for repairing or replace them all together. After completing the repairs and/or replacement of the electrical components, clear the code and see if it returns. If it does then you will have to continue the diagnosis, if however the PCM module enters readiness mode and the code doesn’t set, it would mean there’s an intermittent condition or you resolved the problem causing the code via repairing or replacing the electrical damages.

If you are continuing the diagnosis, you have to inspect the Hydraulic pressure sensor and as well as the TCM. Check for any problems present and repair or replace. In case you feel you’re unable to figure out what the issue may be, then you will have to help from a trained automobile diagnostician.

Common Mistakes When Diagnosing the P0938 Code

• Failure of the Hydraulic oil temperature sensor
• Malfunctioning Transmission Control Module (TCM)
• Issues with wiring