P0860
Gear Shift Module Communication Circuit
Generic code
Transmission System
High severity
Hard repair
Free on OBD DashX
Want real-world data on P0860?
See which problems come with P0860, how often it shows up in other vehicles, and how to fix it — step by step.
- Real-world fix data
- How often it happens
- Step-by-step repairs
What P0860 means
- The fault code P0860 indicates that there is a problem with the communication circuit between the transmission control module (TCM) and the gear shift module. This may result in transmission shifting issues or failure to shift at all.
Possible symptoms
- Reduced or no response from transmission when shifting gears
- Illuminated check engine light
- Transmission stuck in one gear
- Harsh shifting or erratic shifting patterns
Possible causes
- Damaged or faulty wiring in the communication circuit
- Loose or corroded electrical connections
- Failed gear shift module
- Failed transmission control module (TCM)
Related parts
- Gear Shift Module: Gear shift module controls the gear shifting system. This car's module has a problem which may cause difficulty in shifting gears
Possible solutions
- Replace any damaged wiring in the communication circuit
- Tighten or clean any loose or corroded electrical connections
- Replace the gear shift module if necessary
- Replace the transmission control module (TCM) if necessary
Free on OBD DashX
P0860 on OBD DashX
Real-world causes, how often this code shows up, and the fix — step by step.
Open P0860 No sign-up needed · available in 10 languagesScan your own car
Read and clear fault codes, live data and service resets with the CaRPM app.