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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 113 (Hybrid Control System (2WD) - Diagnostic Codes (6 Of 7)) >> HYBRID CONTROL SYSTEM (for 2WD) >> DTC P274A-11: Transmission Fluid Temperature Sensor "C" Circuit Short to Ground; DTC P274A-15: Transmission Fluid Temperature Sensor "C" Circuit Short to Auxiliary Battery or Open [12/2019 - 11/2023] >> Description

DTC P274A-11: Transmission Fluid Temperature Sensor "C" Circuit Short to Ground; DTC P274A-15: Transmission Fluid Temperature Sensor "C" Circuit Short to Auxiliary Battery or Open [12/2019 - 11/2023]: Description

WARNING: This page is about a different variant/trim than selected.
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The resistance of the thermistor built into the transmission fluid temperature sensor changes in accordance with changes in the transmission fluid temperature. The lower the transmission fluid temperature, the higher the thermistor resistance. Conversely, the higher the transmission fluid temperature, the lower the resistance.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P274A-11 Transmission Fluid Temperature Sensor "C" Circuit Short to Ground Short to ground in the transmission fluid temperature sensor circuit
(1 trip detection logic)
  • Wire harness or connector
  • Hybrid vehicle control ECU
  • Hybrid vehicle transaxle assembly (Transmission fluid temperature sensor)
Comes on Master Warning:
Comes on
P274A-15 Transmission Fluid Temperature Sensor "C" Circuit Short to Auxiliary Battery or Open Open or short to +B in the transmission fluid temperature sensor circuit
(1 trip detection logic)
  • Wire harness or connector
  • Hybrid vehicle control ECU
  • Hybrid vehicle transaxle assembly (Transmission fluid temperature sensor)
Comes on Master Warning:
Comes on
RELATED DATA LIST

DTC No. Data List
P274A-11 Transaxle Oil Temperature
P274A-15

HINT: 

After confirming that DTC P274A-11 or P274A-15 is output, use the GTS to check "Transaxle Oil Temperature" in the Data List.

Displayed Temperature Malfunction
-40°C (-40°F) Open circuit or short to +B
215°C (419°F) Short to ground