The 3.0 injectors are very known for failure and contribute to just under half the motor failures. It’s not a bad idea to clean or replace them.
Car has not been misfiring for about 6 weeks now. However came back yesterday. I found a correlation to misfire and HPFP I had audi replace 2 years ago. I can clear code mis on #3 goes away… drives fine unless wot. Guess start off with another HPFP, odd that a brand new audi brand HPFP failed so fast, 15k miles at stg2?..
Below is the full VCDS on Engine 01. I purchased a new drop in fuel filter, we will see if that solves anything.
VCDS
Self-Diagnosis Log
Thursday,06,October,2022,15:25:35:27841
Page 2
VIN: WA1DGAFE7ED017233 License Plate:
Address 01: Engine (CTW) Labels:. 06E-907-551-CAJ.clb
Part No SW: 4L0 910 551 Q HW: 4L0 907 551 A
Component: 3.0l V6 TFSI 0030
Revision: --H08— Serial number:
Coding: 0121000A290F0928
Shop #: WSC 13622 410 403014
VCID: 36203DDD412BBC3DA9-8062
VINID: 9D10545D15951D55000470830CEA7C37F4
3 Faults Found:
012555 - Low Pressure Fuel regulation
P310B - 000 - Fuel Pressure Outside Specification - MIL ON
Freeze Frame:
Fault Status: 11100100
Fault Priority: 4
Fault Frequency: 3
Reset counter: 255
Mileage: 225648 km
Time Indication: 0
Date: 2022.10.03
Time: 10:40:39
Freeze Frame:
RPM: 1856 /min
Mass Air / Rev.: 648.6 mg/str
Temperature: 99.0°C
Time: 691.2 s
Pressure: 9.1 bar
Voltage: 14.18 V
000139 - Low Pressure Fuel System
P008B - 000 - Pressure too High - MIL ON
Freeze Frame:
Fault Status: 11100001
Fault Priority: 4
Fault Frequency: 3
Reset counter: 255
Mileage: 225728 km
Time Indication: 0
Date: 2022.10.03
Time: 11:23:43
Freeze Frame:
RPM: 1216 /min
Mass Air / Rev.: 234.4 mg/str
Temperature: 97.5°C
Time: 819.2 s
Pressure: 11.2 bar
Pressure: 47.6 bar
009529 - Low Pressure Fuel Sensor (G410)
P2539 - 000 - Open Circuit - Intermittent - MIL ON
VCDS
Self-Diagnosis Log
Thursday,06,October,2022,15:25:35:27841
Page 3
VIN: WA1DGAFE7ED017233 License Plate:
Freeze Frame:
Fault Status: 10100001
Fault Priority: 4
Fault Frequency: 36
Reset counter: 255
Mileage: 225735 km
Time Indication: 0
Date: 2022.10.03
Time: 11:27:31
Freeze Frame:
RPM: 0 /min
Mass Air / Rev.: 0.0 mg/str
Temperature: 81.0°C
Bin. Bits: 00000000
Pressure: 5.6 bar
Speed: 0.0 km/h
Readiness: 0000 0000
If I’m not mistaken isn’t the regulator still in the fuel filter itself? Changing the fuel filter is def a good idea. I would be interested in seeing if this dosen’t fix it.
You can see the frequency of the code is present on a regular biases
I ended up purchasing VDO 7L8919679 which I was hoping had all the guts I needed. https://www.fcpeuro.com/products/audi-fuel-filter-7l8919679
Do you suggest replacing anything else in the drivers side tank when I am in there?
The most historic and most often frequency is the
009529 - Low Pressure Fuel Sensor (G410)
P2539 - 000 - Open Circuit - Intermittent - MIL ON
I did not even read open circuit, till now! Maybe replace this sensor… I believe this to just be the sensor that sits by the HPFP on the pass side rail…
Or is there a log I could run to further diagnose? Thanks in advance!
You should be able to see all of these in the log or a measuring block.
One of the best way to assure you’re on the right sensor is to unplug it and then recheck the error codes.
Alright so!! Answers…
Pulled the two plugs off the HPFP and the plug from the G410 and cleaned with Dexoit, cleared codes everything was fine with exception to evap small leak detected… drove code free WOTs no issues for a while
New fuel filter arrived so swapped that out yesterday. Here is the old one that someone getto rigged. Cleared codes. Evap code gone!
All codes gone and butt dyno states car is running perfect
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Nice work!
400 miles later, its still pissed. Will do some logging next
I believe this to be the old school 3bar FPR located in the right tank side? Excited to see what the last owner did in there
There was a recall for the fuel pump cap/fuel filter yellowing, cracking, and eventually leaking. That is why the black tape/flat dumb dumb glue looking stuff is on top of it.
I recommend that you check out the part number on the low fuel pressure sensor. It should be a K revision for the most up-to-date part number. Those sensors are a very common failure.
It is a K. Today driving the car under low load it cut out a few times. Had to keep higher rpm to limp home. We looking at fuel pump or start by throwing a new sensor on first? I’m still getting that open circuit code so feeling like a sensor
Alright, picked up a brand new OEM dealership sensor for $116. Installed and all codes gone. Log below, appears the demanded and supplied are within ranges as well the pump duty is around 70% which I read is what we want? Or is this 78% something to be concerned with?
Really pissed her off when I forgot to shift. However, car still runs great. I have never seen such a code before, almost proud of it
000537 - Maximum Engine Speed Exceeded: Engine Warranty VOID!
P0219 - 000 - -) - Intermittent
Freeze Frame:
Fault Status: 00100001
Fault Priority: 1
Fault Frequency: 3
Reset counter: 255
Mileage: 236583 km
Time Indication: 0
Date: 2023.03.22
Time: 17:43:40
Freeze Frame:
RPM: 7456 /min
Mass Air / Rev.: 387.0 mg/str
Temperature: 97.5°C
Bin. Bits: 00000011
Load: 34.9 %
Speed: 56.0 km/h
Q7 Codes 4-1-23.pdf (282.2 KB)
Haha, wow, that is quite the code! Living life a 1/4 mile at a time? Haha.
Has the Q been running well otherwise these days?
Still trying to find the time to do major service on mine, PCV is making a lot of noise, really need to get in there and replace it but been putting it off as it’s going to be a big job with all the other bits and pieces I want to replace while I’m in there.
That used to be the big B5 code back in the day.
The best part is you obviously did it more than once. As your frequency is 3 LOL
It also looks like your Intake temps are little high. Are you using the OEM Cooler or have the JHM one mounted? A little late but do you have a copy of the Audi 3.0 SSP for the V6? Based off the 2009 version but pretty much the same throughout the life of the engine. PM me your E-mail if you don’t and I’ll E-mail it to you. Won’t upload here as it’s a little over 12MB. Or search SSP925803 pdf and you should be able to find it.
Let’s be clear I am not intentionally doing this, just 1st gear in this car is soo short + the Q7 is quiet still, really can only hear the sc whine but still stock intake and exhaust. On the s6 or TT at least I can hear when I am to shift… iirc my jhm s6 soes shift out of 1st if I forget, but then again I am far more careful with the s6
Yes I have the JHM FmHx + the stock dual SM heat exchangers, and it works fantastic! I am not concerned about 97.5 degC as it should hover at 93… I did replace the thermostat last year and it stays pegged at 93 most all the time. I see the V10 s6 much warmer much more often, sometimes 100degC+ in summer heat
I did see a positive change in oil consumption after replacing the PVC. I had a shop do it, they have removed the blower 5x now for different items complicated with removing, all under warranty. Some things that I know are going to bite me in the ass later like the SC, injectors, VC gaskets, wp on this thing I put a shop warranty on. Has saved me hours of rework. Else I am surprised how well and reliable this car really is
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I haven’t looked at all of the groups but I don’t think you can measure a separate temperature for the Supercharger. I did a Garage Sports divorced Reservoir with a PLM cooler. Just using a IR Temp reader after a hard run I have never seen over 75’C. I’m sure I could get it higher if it was on a track day but as long as they are sharing the same coolant you can only go so far and lowering the engine coolant temperature we all know starts to be a bad thing when it gets too low.