DTC U0300: Internal Control Module Software Incompatibility: Description

The PSCM is self monitoring and performs 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 10 and 17 volts, etc.) for the test to take place. If one or more of the self-tests should 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. This DTC is usually set if the PSCM has recently been flashed and the flash was done incorrectly or was interrupted.