DTC U0300: Internal Control Module Software Incompatibility: Description

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The PSCM is self monitoring and will carry out self-tests at specific intervals (initial power up, power down, during normal operation, etc.). Each self-test requires the voltage supply to the PSCM to be at or above a specific level (above 6 volts, above 9 volts, between 11 and 16 volts, etc.) for the test to take place. If one or more of the self-tests fail, the module sets one or more DTCs.

DTC U0300:00 (Internal Control Module Software Incompatibility: No Sub Type Information) - This DTC is set if the PSCM detects a configuration data failure or a mismatch between the stored and retrieved data during self-test.