P0792 Code: Intermediate Shaft Speed Sensor “A” Circuit Range/Performance

The intermediate shaft speed sensor is a permanent magnet sensor that helps the transmission control module (TCM) regulate line pressure for the appropriate shift timing. If the intermediate shaft speed sensor is unable to send the right signals to the TCM, on-board diagnostics will log engine code P0792.

What Does the P0792 Code Mean?

Diagnostic trouble code (DTC) P0792 stands for “Intermediate Shaft Speed Sensor ‘A’ Circuit Range/Performance.”

A vehicle needs to change speed and rates of acceleration for optimum performance. To determine the appropriate time to shift gears, the TCM relies on signals sent by the intermediate shaft speed sensor. This sensor tells the TCM how fast the intermediate shaft is spinning.

The TCM also relies on the output of the intermediate shaft speed sensor to adjust hydraulic pressures, shift points, and patterns.

A problem with the intermediate shaft speed sensor can cause the powertrain control module (PCM) to log a P0792 code.

Note: The definition of code P0792 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 P0792 Code?

• Intermediate shaft speed sensor failure
• Wiring issues
• TCM failure
• PCM failure

What are the Common Symptoms of the P0792 Code?

• Illuminated check engine light
• Poor fuel economy
• Transmission is unable to shift properly

How to Diagnose the P0792 Code

DTC P0792 is a generic powertrain code that can be logged in vehicles that have an OBD-II system. However, keep in mind that the steps for diagnosis and repair can vary, depending on vehicle specifications.

Diagnosing trouble codes related to electrical components usually requires unplugging connectors and using a digital multimeter to check for abnormal readings. If you’re not familiar with the process, it’s best to let a mechanic do the job for you instead to ensure that all steps and protocols are followed correctly. Otherwise, you can go ahead and do it yourself.

How to Fix the P0792 Code

Attempting to fix a P0792 code can be a frustrating and confusing task without the right tools and technical knowledge. If done incorrectly, the repair process can even lead to further complications down the road. If you’re not confident in your DIY skills yet, you can always bring your vehicle to the nearest repair shop and have a professional perform the necessary repairs.

But if you think you have what it takes to fix the problem on your own, make sure to have the right repair information before proceeding. Always remember that there’s no such thing as a magic bullet that can resolve all trouble codes for every make and model, which is why having vehicle-specific repair information is a must. You can check out guides like those from Chilton or an ALLDATA subscription to get the right guides for your vehicle.