P0886TCM Power Relay Control Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Some gearboxes draw their power through a relay, such as the transmission control relay in Chrysler's fuse box that feeds the solenoids. P0885 to P0887 cover the coil control of that relay, P0888 to P0892 its sense line, which reads back the switched output and compares it with the command. A dead relay leaves all solenoids without power, so the gearbox drops into its hydraulic emergency gear. P0886 means the coil control line is shorted to ground or the driver reports a short, so the relay pulls in unintentionally or the driver shuts down. No maker documents the code; its neighbours P0885 and P0887 are documented by Ford and FCA.
- What you may notice
- MIL on
- Limp mode possible
- Relay does not click or stays pulled in
- Likely causes
- LikelyControl wire chafed to ground
- PossibleRelay coil shorted
- RareModule driver faulty
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €20 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.