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.
Medium severity. Can I keep driving?Drive gently to a repair shop. If it slips, you hear clunks, or it loses its gears, do not keep driving.
Symptoms
- Warning lamp
- Temperature D shows an impossibly hot value
Most likely causes
- Pinched or melted lead of sensor D touching ground
- Short inside sensor D
- Module input faulty
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: medium
What each character of P275C means
- P: Powertrain: engine and transmission
- 2: Generic code: same on every make
- 7: Transmission
- 5C: Specific fault in that system
Frequently asked questions
Can I keep driving with code P275C?
Drive gently to a repair shop. If it slips, you hear clunks, or it loses its gears, do not keep driving.
What causes code P275C?
The most common causes are: pinched or melted lead of sensor D touching ground; short inside sensor D; module input faulty.
Related codes
- P275ATransmission Fluid Temperature Sensor D Circuit
- P275BTransmission Fluid Temperature Sensor D Circuit Range/Performance
- P275DTransmission Fluid Temperature Sensor D Circuit High
- P275ETransmission Fluid Temperature Sensor D Circuit Intermittent
- P275FTransmission Fluid Temperature Sensor D Over Temperature Condition
- P0712Transmission Fluid Temperature Sensor A Circuit Low
Sources
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.