Our automotive experts have put together the following information about the P068B 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 P068B code.

OBD II Fault Code

  • OBD II P068B

    OBD-II Code Hard or no start in cold weather is defined as a ECM/PCM Power Relay De-Energized Performance - Too Late

    The PCM Power Relay supplies power to the engine control module (PCM). If the PCM detects a variance in voltage from the Power Relay, the PCM will set code P068B.

    Hard or no start in cold weather Symptoms

    • Engine may not start
    • Hard or no start in cold weather

    Common Problems That Trigger the P068B Code

    • Powertrain Control Module (PCM) failure
    • Powertrain Control Module (PCM) power relay failure
    • Wiring issue
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