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spn 4812 help

cement head

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Hey folks, I have a 2015 Mack that is showing the engine shut down light. im getting codes SPN: 4813 FMI 5 AND 4812 FMI4. Both oil system related. Its also  throwing 647 fmi 5 for clutch fan. Im thinking wiring. I have cleaned the connections at these actuators and don't see any clear signs of bad wires. Any pointers.

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