Powertrain, generic (extended)

P275A Transmission Fluid Temperature Sensor D Circuit

Check engine lightOn
EmissionsNot relevant
Drive cycleRequired
Limp modeNo

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.

Likely causes

Fault in connector or lead of sensor D
Sensor D electrically defective
Module input stage faulty

Symptoms

  • Warning lamp
  • Temperature D missing or implausible on the scan tool

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–900
Time0.5–4 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

trans fluid temp sensor dwiring harness

Related codes

P275BP275CP275DP275EP0710

References: law.cornell.edu, fordservicecontent.com.