From an engine guru....
......might be a clue......High resistance ... where is the most likely place for an ECU to see "high resistance"? In the cable that supplies the signal. ........
OC Diver has it nailed when he suggests cleaning the connectors. That should have been the first step. That is the first place to start looking for an ECU issue on modern engines, especially when the ECU tells you what to look for.
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