P275CTransmission Fluid Temperature Sensor D Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Needs a drive cycle to confirm a fix
- How the car detects it
- P275C reports that sensor D delivers less signal than the module considers possible. Read against an NTC thermistor this means a reading far hotter than the fluid could be, which almost always points to a pinched or melted lead touching ground, or to a short inside the sensor body. P275C is not documented by any manufacturer. As a frame of reference, GM's 2023 dual-clutch TCM judges its sump sensor too low below 200 mV for 500 ms. Mitsubishi shows that the meaning can also be inverted, since its dual-clutch unit sets the sensor B low code at −40 °C or colder. Before replacing parts, unplug the sensor: if the value jumps to the cold end, the fault lies in the sensor, otherwise in the harness.
- What you may notice
- Warning lamp
- Temperature D shows an impossibly hot value
- Likely causes
- LikelyPinched or melted lead of sensor D touching ground
- PossibleShort inside sensor D
- RareModule input faulty
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.