P0863
MODERATETCM Communication Circuit
What this code means
TCM Communication Circuit. A continuation of the previous family: transmission controls, solenoids and sensors. Diagnosis nearly always requires the manufacturer's documentation.
How to read this code
- PPowertrain
- 0standardised code
- 8Transmission (continued)
- 63P0863
The letter P names the system: Powertrain. The digit 0 that follows marks a standardised code, shared by all manufacturers code. The next digit, 8, locates the fault: transmission (continued).
What to do
Have it checked this week. The car remains usable, but the fault will not clear itself and will fail the roadworthiness test.
Clearing a code switches the light off but repairs nothing: if the fault remains, the code comes back.
Nearby codes
- P0860Gear Shift Module Communication Circuit
- P0861Gear Shift Module Communication Circuit Low
- P0862Gear Shift Module Communication Circuit High
- P0864TCM Communication Circuit Range/Performance
- P0865TCM Communication Circuit Low
- P0866TCM Communication Circuit High
- P0867Transmission Fluid Pressure
- P0868Transmission Fluid Pressure Low