P275C code meaning
Transmission Fluid Temperature Sensor D Circuit Low
Powertrain system Generic code P27xx codes Check engine light
What P275C means
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.
P275C at a glance
- Check engine lightYes, usually on
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 4 hours
- Clears after repairAfter a drive cycle
Symptoms of P275C
- Warning lamp
- Temperature D shows an impossibly hot value
Common causes of P275C
- Most likelyPinched or melted lead of sensor D touching ground
- PossibleShort inside sensor D
- Less likelyModule input faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Trans fluid temp sensor dWiring harness
What each part of P275C means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 7 | Area: transmission. |
| 5C | The exact fault in that area. |
What to do next
- Note P275C and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P275C
What does P275C mean?
P275C means "Transmission Fluid Temperature Sensor D Circuit Low". P275C reports that sensor D delivers less signal than the module considers possible. It is a generic code, so it means the same on every make.
Is it safe to drive with P275C?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P275C fail an emissions test?
P275C is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is P275C to fix?
Difficulty: medium. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will P275C clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.