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P0860 is a diagnostic trouble code (DTC) for "Gear Shift Module Communication Circuit". 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 P0860 code is a generic powertrain code related to the transmission, including pressure faults and sensor failures. In this case, the engine control module (ECM) has detected a fault with the gear shift module communication circuit.
A code P0860 will be stored when the EMC has found a fault or error in the gear shift module communication circuit.
Note, the P0860 code will only apply to vehicles with an electronic traction control system.
The gear shift module communication circuit sends information through the vehicle’s controller area network (CAN) to the ECM, in addition to other controllers, to help calculate efficient vehicle operation. The CAN is a communication bus that helps different vehicle modules communicate with each other. The gear shift module helps the vehicle determine the proper gear shift timing.
Several problems may cause a P0860 code including:
Symptoms of a P0860 code may include:
A mechanic may use several methods to diagnose a P0860 trouble code, including:
At times, the gear shift module is incorrectly determined to be the cause of the P0860 code, when the actual problem is in the electrical wiring or with a switch or sensor. It is recommended to fully diagnose any fault or trouble code prior to making repairs.
Because a vehicle’s safe driving operation most likely will be impacted due to faults that store a P0860 code, this code is considered a potentially serious code. When this code appears, it is recommended to immediately take your vehicle to your local service center or mechanic for repair and diagnosis.
Several repairs can fix a P0860 trouble code and include:
As with any trouble code or maintenance problem related to the controller area network (CAN), the large amount and bulk of electrical circuitry.
YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6220.