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Our automotive experts have put together the following information about the P0A04 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 P0A04 code.

OBD II Fault Code

  • OBD II P0A04

    OBD-II Code Engine may overheat is defined as a Motor Electronics Coolant Temperature Sensor Circuit Intermittent

    The Hybrid System has its own cooling system. The Motor Electronics Coolant Temperature Sensor monitors the temperature of the hybrid cooling system. If the engine computer (PCM) sees an implausible signal from this sensor, code P0A04 will be stored.

    Engine may overheat Symptoms

    • Engine may overheat

    Common Problems That Trigger the P0A04 Code

    • High voltage coolant temperature sensor failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue
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