Caterpillar Derate Fault Codes

The entry 03-0042-07 appears to be a CAT-style diagnostic or flash-code formatted entry rather than a standard SPN/FMI pair.

The entry 0FD205798 does not look like a standard CAT SPN/FMI or event code.

CAT fault code 358-4 indicates that the ECM is seeing a low-voltage condition on the circuit associated with SPN 358.

CAT event code E039 or EID39 is an engine protection event that may contribute to warning, derate, or shutdown depending on severity and calibration.

CAT event code E041 or EID41 should be treated as a condition-based engine event that may be related to protection or derate logic.

CAT event code E361 is commonly treated as an engine protection event that can produce warnings or derate depending on severity and the machine calibration.

CAT event code E362 is another engine protection event that may be listed with derate complaints.

CAT event code E539 should be handled as a derate-related or engine-protection event until its full description is verified in Cat ET.