P275A code meaning
Transmission Fluid Temperature Sensor D Circuit
Powertrain system Generic code P27xx codes Check engine light
What P275A means
P275A flags an electrical fault in the circuit of transmission fluid temperature sensor D, the fourth position in the SAE lettering. A gearbox with four separate fluid temperature inputs is rare, and no manufacturer publicly assigns sensor D or describes when P275A is stored. CARB requires every such powertrain input to be checked for interrupted circuits and for values beyond the sensor span. The general circuit code fits modules that cannot or do not distinguish between an open and a short; where they can, P275C and P275D apply. Diagnosis follows the usual path: read the live value of D next to the other temperature readings, inspect the connector, then measure the resistance of sensor and lead.
P275A 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 P275A
- Warning lamp
- Temperature D missing or implausible on the scan tool
Common causes of P275A
- Most likelyFault in connector or lead of sensor D
- PossibleSensor D electrically defective
- Less likelyModule input stage 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 P275A 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. |
| 5A | The exact fault in that area. |
What to do next
- Note P275A 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 P275A
What does P275A mean?
P275A means "Transmission Fluid Temperature Sensor D Circuit". P275A flags an electrical fault in the circuit of transmission fluid temperature sensor D, the fourth position in the SAE lettering. It is a generic code, so it means the same on every make.
Is it safe to drive with P275A?
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 P275A fail an emissions test?
P275A 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 P275A to fix?
Difficulty: medium. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will P275A 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.