Our automotive experts have put together the following information about the P00B1 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 P00B1 code.

OBD II Fault Code

  • OBD II P00B1

    OBD-II Code Cooling fans may stay on all the time is defined as a Radiator Coolant Temperature Sensor Circuit

    The Radiator Coolant Temperature Sensor tells the engine control module (PCM) the temperature of the coolant in the radiator. When the PCM detects an incorrect signal from the Radiator Coolant Temperature Sensor, the PCM will set code P00B1.

    Cooling fans may stay on all the time Symptoms

    • Cooling fans may stay on all the time

    Common Problems That Trigger the P00B1 Code

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