Continued to receive error code p2647 per the 2007 convention. I replaced the pressure sensor and switched the oil to synthetic - the error and performance remained. Thought this would be the next course of action - maybe something is clogged etc. Replaced it and the machine seems to be working fine - only 2-3 days but I suspect everything is fine. A little tricky to get the chord but certainly not a long process of change. The part appears to be on par with the Honda part and even includes a heat shield.
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