Trying to solve a LPFP issue...duty is 91.8% all of the time.

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Roh Echt

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I've been trying to help another who keeps getting a P310B fault...their log data shows LPFP duty always at 91.8% and low pressure actual at just over 3 bar.
Also, it is tuned stage 2+ but the HPFP specified takes time in the data to reach 109.9 bar at full throttle angle...but his upgraded HPFP is producing an actual pressure of over 140 bar.

He has replaced the G410, LPFP, electric fuel pump control module, and fuel filter (6.6 bar).
Could this have been an electrical issue all along? He says he doesn't visually see anything wrong and I have suggested at this point to have someone with electrical skilll do some probing.
 
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DrPeter

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