Fault Family System: Powertrain (P-Codes) 21 SAE Codes

Trans Fluid Temp Sensor Circuit

Diagnostic & Technical Explanation

Code P0710 (Transmission Fluid Temperature Sensor A Circuit) sets when the ECM/TCM sees an open, shorted, or implausible resistance from the transmission fluid temperature (TFT) sensor circuit itself, rather than an actual over-temperature event. Causes are a corroded or unseated sensor connector, chafed harness wiring near the transmission case, or a failed thermistor element — on many platforms this sensor is integral to the internal valve-body wiring harness rather than a separate bolt-in part, which changes the repair scope.

These 21 diagnostic trouble codes share one detection mechanism and one repair path, which is why MechanicDB groups them into a single authored fault family rather than repeating the same explanation 21 times.

Codes in this family (21)

Code	Definition	Repair coverage
P0710	Transmission Fluid Temperature Sensor A Circuit	4 ranked fixes
P0711	Transmission Fluid Temperature Sensor A Circuit Range/Performance	4 ranked fixes
P0712	Transmission Fluid Temperature Sensor A Circuit Low	4 ranked fixes
P0713	Transmission Fluid Temperature Sensor A Circuit High	4 ranked fixes
P0714	Transmission Fluid Temperature Sensor A Circuit Intermittent	4 ranked fixes
P077E	Transmission Fluid Temperature Measurement System - Multiple Sensor Correlation	4 ranked fixes
P2740	Transmission Fluid Temperature Sensor B Circuit	4 ranked fixes
P2741	Transmission Fluid Temperature Sensor B Circuit Range/Performance	4 ranked fixes
P2742	Transmission Fluid Temperature Sensor B Circuit Low	4 ranked fixes
P2743	Transmission Fluid Temperature Sensor B Circuit High	4 ranked fixes
P2744	Transmission Fluid Temperature Sensor B Circuit Intermittent	4 ranked fixes
P274A	Transmission Fluid Temperature Sensor C Circuit	4 ranked fixes
P274B	Transmission Fluid Temperature Sensor C Circuit Range/Performance	4 ranked fixes
P274C	Transmission Fluid Temperature Sensor C Circuit Low	4 ranked fixes
P274D	Transmission Fluid Temperature Sensor C Circuit High	4 ranked fixes
P274E	Transmission Fluid Temperature Sensor C Circuit Intermittent	4 ranked fixes
P275A	Transmission Fluid Temperature Sensor D Circuit	4 ranked fixes
P275B	Transmission Fluid Temperature Sensor D Circuit Range/Performance	4 ranked fixes
P275C	Transmission Fluid Temperature Sensor D Circuit Low	4 ranked fixes
P275D	Transmission Fluid Temperature Sensor D Circuit High	4 ranked fixes
P275E	Transmission Fluid Temperature Sensor D Circuit Intermittent	4 ranked fixes

What this page does not show

This page publishes the fault mechanism and the code index. The licensed dataset adds, for every one of the 15,886 codes, the full authored repair set (56,729 procedures in total) with the fields deliberately withheld here:

Procedures 2..n after the first-listed procedure
Aftermarket parts cost ranges in USD (est_parts_cost_min/max_usd)
Professional labor-hour estimates (est_labor_hours)
Step-by-step diagnostic and repair instructions
Replacement-part mappings and catalog lookups
6,637 manufacturer-specific OEM codes across 32 makes ($149 tier)

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