Our automotive experts have put together the following information about the P0071 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 P0071 code.

What Does P0071 Code Mean?

    OBD-II Code P0071 is defined as a Ambient Air Temperature Sensor Range/Performance

    The ambient temperature sensor helps the engine control module (PCM) determine how much fuel to use on startup. The PCM also uses this signal as a logic reference for other temperature sensors on the engine. If the PCM detects an issue with the signal from this sensor, it will set code P0071.

    P0071 Symptoms

    • Hard engine start

    Common Problems That Trigger the P0071 Code

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