DSD Information System
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] >> DTC Summary

DTC Summary

WARNING: This page is about a different variant/trim than selected.
  1. MALFUNCTION DESCRIPTION 

    These DTCs are stored when the transmission fluid temperature sensor output is abnormal. The cause of this malfunction may be one of the following:

    Hybrid vehicle control ECU internal malfunction 

    • Hybrid vehicle control ECU malfunction

    Transmission fluid temperature sensor malfunction 

    • Internal transmission fluid temperature sensor malfunction
    • Open or short in transmission fluid temperature sensor

    Wire harness between the transmission fluid temperature sensor and hybrid vehicle control ECU 

    • The connectors are not connected properly
    • Foreign matter or water on the connector terminals
    • Open or short in wire harness
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