Vag com 106 block 2, 0% duty cycle reading

**joshuawheat** · 04-21-2018 05:10 PM

I am looking for help. Starting today, I noticed that my lpfp duty cycle is reading 0% all the time (2008 a4 2.0t fsi). What does the ecu get duty cycle readings from? It's really bugging me as I want to be able to log everything. Any help is appreciated

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**joshuawheat** · 04-22-2018 10:20 AM

Tried checking a few other blocks and still nothing. The lpfp primes and everything else is great. Block 103.1 shows 4.5 bar cruising and around 4.9 bar at idle. Between 100-110 bar (cruising) and 59-60 bar (idle) on block 106.1, but block 106.2 shows 0% all the time. Any input is welcomed. I'm at a complete loss as I don't know where block 106.2 pulls its readings from.

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**joshuawheat** · 04-25-2018 05:51 AM

Still researching this, as I am down to two possible thoughts. One being that something in the fuel pump went bad and caused the ECU to stop seeing readings for it, or the fuel pump control module having some internal error. As stated before, the pump is priming and working as it should. all fuel pressures are good while running and even before the engine is on. just no duty cycle readings. I have contacted a few VW guys for some input and Charles from Humble Mechanic on Youtube has been chatting with me and trying to get me some help. If I can for sure figure this out, hopefully I can shed some light and no one else has to deal with this.