P275D code meaning
Transmission Fluid Temperature Sensor D Circuit High
Powertrain system Generic code P27xx codes Check engine light
What P275D means
P275D is stored when the sensor D signal rises past the top of its window. With a thermistor on a pull-up resistor the voltage climbs towards the supply when current can no longer flow, so an interrupted lead, a pushed-back terminal or an unplugged connector is the usual explanation, followed by a short to a voltage source. No manufacturer publishes P275D with limits; for the main sensor GM's 2024 dual-clutch TCM uses more than 4745 mV over 500 ms, and Ford's 2012 strategy more than 4.6 V. A quick check is to measure the resistance from the module side or to bridge the connector briefly with a suitable resistor. Until repaired, the gearbox may treat the oil as cold.
P275D 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 P275D
- Warning lamp
- Temperature D shows an extremely cold value
Common causes of P275D
- Most likelyInterrupted lead or pushed-back terminal at sensor D
- PossibleSensor D open internally
- Less likelySignal lead shorted to a voltage source
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 P275D 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. |
| 5D | The exact fault in that area. |
What to do next
- Note P275D 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 P275D
What does P275D mean?
P275D means "Transmission Fluid Temperature Sensor D Circuit High". P275D is stored when the sensor D signal rises past the top of its window. It is a generic code, so it means the same on every make.
Is it safe to drive with P275D?
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 P275D fail an emissions test?
P275D 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 P275D to fix?
Difficulty: medium. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will P275D 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.