DTC U0300 - Internal Control Module Software Incompatibility
WARNING: This page does not describe the selected car, but rather 24 other vehicles, including the 2019 Lincoln Navigator, 2019 Lincoln Nautilus, 2019 Lincoln MKZ, 2019 Lincoln MKT, and 2019 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.
DTC DESCRIPTION U0300 - INTERNAL CONTROL MODULE SOFTWARE INCOMPATIBILITY
| Description: The electronic throttle control (ETC) system uses multiple microprocessors within the PCM, each having its own software level and function. The microprocessors must have the correct level of software in order to communicate and function together. This DTC sets when there are incompatible software levels within the PCM that control the ETC system. | |||
Possible Causes:
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| Diagnostic Aids: Verify the PCM is at the latest calibration level. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST QE . | ||