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P0792 is a diagnostic trouble code (DTC) for "Intermediate Shaft Speed Sensor Circuit Range/Performance". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
The P0792 code indicates that the PCM detected an incorrect input signal from the transmission intermediate shaft speed sensor circuit. In many cases, this code will be accompanied by input speed sensor codes as well.
The PCM uses information from the transmission intermediate shaft speed sensor to assist in proper shifting. As the shaft speed gradually increases, the PCM will monitor the shifting operation until the shift point occurs. If the shaft speed is not increasing, or if the signal received from the intermediate shaft speed sensor is erratic or not within the proper range according to the manufacturer’s specifications, the PCM will store the P0792 code.
Most commonly, the P0792 code is caused due to a defective intermediate shaft speed sensor. The output speed sensor or the input speed sensor may also be at fault. Other causes include:
In addition to the illuminated Check Engine light, the P0792 code may be accompanied by symptoms such as:
Diagnosing the underlying issue that causes the P0792 code should begin with an inspection of all electrical components. After repairing any loose, damaged, corroded, open, shorted, or otherwise malfunctioning electrical wiring or connectors, the mechanic should clear the code and retest the system. If the code returns, the mechanic should begin checking the transmission fluid to be sure it isn’t dirty or contaminated. If the transmission fluid smells burnt, the entire system may need to be flushed and cleaned, and refilled with clean fluid.
After these two attempts to diagnose the issue, the mechanic should continue testing components and comparing the voltage readings to manufacturer specifications until the correct component is found. After any repair is attempted, the mechanic should clear the code and retest the system to ensure that the issue was fully diagnosed and repaired.
There are many common misdiagnoses when the P0792 code is present. Speed malfunctions, fuel delivery problems, transmission problems, or driveline malfunctions, are often incorrectly blamed. Vehicle speed sensors are frequently replaced unnecessarily.
If the P0792 code is being detected, a vehicle should be repaired immediately. This code indicates a serious issue within the transmission; left alone, it may result in massive transmission failure, or unsafe driving conditions.
There are many ways that a technician can address a P0792 code detection. They include:
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