P0860 Shift communication circuit

P0860 – Technical description of the OBD-II fault code

Shift communication circuit

What does the fault code mean P0860?

Code P0860 is related to the transmission and indicates problems with the transmission module communication circuit detection. This code indicates an error between the gearshift mechanism and the ECU, which can cause the engine and gears to operate inefficiently.

A "P" in the first position of a diagnostic trouble code (DTC) indicates the transmission system, a "0" in the second position indicates a generic OBD-II (OBD2) DTC, and an "8" in the third position indicates a specific fault. The last two characters "60" indicate the DTC number. Diagnostic code P0860 indicates a problem with the Shift Control Module "A" communication circuit.

Possible reasons

Problems associated with the P0860 code may be caused by the following:

1. Malfunction of gear shift control module “A”.
2. Damage to the wiring and/or connectors associated with the shift control module circuit “A”.
3. Faulty gear lever position sensor.
4. Failure of the gear shift module sensor.
5. Failure of the gear shift mechanism.
6. Damage to wires or connectors caused by opening and/or short circuiting.
7. Excessive moisture levels have accumulated in the shift module sensor connector.

What are the symptoms of a fault code? P0860?

Symptoms associated with a P0860 code include:

1. Rough gear shifting.
2. Failed to engage the gear.
3. Sluggish mode.

These symptoms may also be accompanied by the following:

1. The traction control warning light comes on.
2. Reduced fuel economy.
3. Grip problems on slippery roads.
4. Difficulty turning on or off any gear.
5. Possible lighting or flashing of the traction control indicator.

How to diagnose a fault code P0860?

The following steps are recommended to diagnose DTC P0860:

1. Use an OBD-II scanner to determine the DTC and record any other DTCs if present.
2. Check wiring and connectors for signs of damage, corrosion, or disconnection.
3. Check the condition of the hand lever position sensor and make sure it is functioning correctly.
4. Check the operation of the gear shift control module and its communication with other systems.
5. Carry out a thorough inspection of the gear shift mechanism for defects or damage.
6. Make sure that moisture or other external factors do not affect the shift module sensor connector.
7. Check all parameters related to the gear shift system using specialized diagnostic tools and equipment.

Diagnostic errors

When diagnosing the P0860 trouble code, the following common errors may occur:

1. An incomplete or superficial scan that does not include a check of all associated systems and components.
2. Incorrect interpretation of scan results due to insufficient understanding of the gear shift system.
3. Insufficient inspection of electrical components such as wires and connectors, which may be damaged or malfunctioning.
4. Incorrect identification of the root cause of the problem, which can lead to replacing unnecessary components and wasting time.
5. The need for additional tests and checks to fully diagnose the gear shift system.

How serious is the fault code? P0860?

Trouble code P0860 is related to the transmission shift system and can vary in severity depending on your specific circumstances. In general, this code indicates problems with communication between the engine control module and the shift control module.

Although the vehicle may continue to operate with this code, shifting problems can result in unsuccessful shifting, rough starting or disengaging, and poor fuel economy. It is important to solve this problem as soon as possible to avoid possible consequences for the correct operation of the transmission.

What repair will help eliminate the code? P0860?

To resolve the P0860 code, you must conduct a thorough diagnosis to determine the root cause of the problem. Depending on the detected causes, the following repair measures are possible:

1. Replace or repair the gear shift control module if malfunctions are detected in its operation.
2. Check and repair the wiring and connectors associated with the transmission control module communication circuit to eliminate possible corrosion or breaks.
3. Replacement or repair of the gear lever position sensor if malfunctions are detected in its functioning.
4. Repair or replace damaged gear shift mechanisms if they are causing the problem.
5. Check and correct any other problems found during the diagnosis that may be affecting the proper operation of the shift system.

It is recommended that repairs be carried out at a specialized auto repair shop, where experienced technicians can accurately identify and fix the problem associated with the P0860 code.

What is P0860 Engine Code [Quick Guide]

P0860 – Brand-specific information

Trouble code P0860 is related to the transmission shift system and can occur on various makes of vehicles. Here are some car brands for which this code may be applicable:

1. Ford – Code P0860 usually refers to a transmission control module communication error.
2. Chevrolet – On some Chevrolet models, this code may indicate problems with the shift control module.
3. Toyota – For some Toyota vehicles, the P0860 code may indicate a problem with the transmission shift system.
4. Honda – On some Honda models, the P0860 code may indicate an error in the transmission control module communication circuit.
5. Nissan – On some Nissan models, the P0860 code may indicate problems with the transmission shift mechanism.

These are just a few of the possible makes of vehicles that may experience the P0860 code. The meaning of specific brands may vary depending on the type and configuration of the transmission.