Our automotive experts have put together the following information about the P2740 diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P2740 code.

OBD II Fault Code

  • OBD II P2740

    OBD-II Code Transmission may not shift properly is defined as a Transmission Fluid Temperature Sensor "B" Circuit"

    The Transmission Fluid Temperature Sensor tells the engine control module (PCM) the temperature of the fluid in the transmission. If the PCM detects an incorrect signal from the Transmission Temperature Sensor, the PCM will set this code.

    Transmission may not shift properly Symptoms

    • Transmission may not shift properly
    • Transmission temperature warning light may illuminated on the instrument cluster

    Common Problems That Trigger the P2740 Code

    • Powertrain Control Module (PCM) failure
    • Transmission Control Module (TCM) failure
    • Transmission temperature sensor failure
    • Wiring issue
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