2FDB - Crankshaft or HPFP?
- Thread starter nyt
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Solution
Yes, seeing the following shadow codes from MHD. Are these all HPFP? Seems odd that two of them reference the crankshaft...
2FCA Fuel high pressure bei Freigabe der Einspritzung
2FDA - Crankshaft sensor, signal: Missing.
2FDB - Crankshaft sensor, signal: Not plausible.
Heres a GOOD one. 2FCA, 2FDA, 2FDB - JB4tech.com - International Turbo Tuning Discussion
Heres a GOOD one. 2FCA, 2FDA, 2FDB Support & Log Review
www.n54tech.com
Well, that's lovely.
Here's an example where trims flatline and it kills bank 1:
And another where it does it and recovers mid pull:
hpfp levels look quite similar to the what I was seeing back before the built engine and single turbo, running 30psi on hybrids without seeing this type of trouble. That said, I have installed a BPM4 since then and my low pressure is running with a rising rate regulator, not sure if that's contributing?
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These are the actual descriptions of those errors:
2FCA - Detected symptom of FUP start diagnosis - fuel pressure at high pressure start is too low
2FDA - Detected symptom delayed FUP start
2FDB - Detected symptom no rising fuel pressure at start
The MHD descriptions are wrong on those codes.
FUP = HPFP
That looks like the DME isn't seeing enough rail pressure at startup. That "no rise" error means that the rail pressure didn't exceed 435psi (this is the minimum) during the startup phase.
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Thanks for that info. That's likely from the 295s with no check valves, so expected / benign.
Ok, now to figure out why it's firing super knock codes
caught it for cyl 1 and cyl 2. I think my front driveshaft is on the way out, wonder if that's making noise. I have one getting delivered on Monday.
Thanks for that info. That's likely from the 295s with no check valves, so expected / benign.
Ok, now to figure out why it's firing super knock codes
Ty.....MHD believes they are correct and have always been that way.
Which there is proof on Terrys site that they were NOT always crank signal codes. I swear the guy that respomds to emails pays no attention to concerns users have.
Not sure how these got messed up, but will get our codes DB updated in a future update. Thank you!
See what I am saying ?
This is the way to handle things @Jake@MHD Thank you Sir.
I can post the emails where I was told it is NOT a MHD thing by the guy (or girl) that responds to emails. Hence why the other thread was getting cluttered. That person does not take the time to read. It almost feels like a bot saying the same thing for any concerns.
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