P0885TCM Power Relay Control Circuit/Open
- 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. P0885 means the coil circuit is open; the module checks its relay driver output at key-on. Ford lists it in its powertrain code list with or without MIL depending on vehicle; on FCA's 948TE nine-speed in the 2015 Cherokee and Chrysler 200 it was cured with a gearbox module reflash.
- What you may notice
- MIL on
- Limp mode in a fixed gear, no shifting
- Harsh engagement into D or R
- Likely causes
- LikelyRelay faulty (coil open) or missing
- LikelyWire between relay and module open, connector or fuse box contact
- PossibleFuse of the relay coil blown
- PossibleModule software (FCA 948TE reflash)
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Easy · 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.