HPFP gone bad?

[dspl1236]

So I believe my HPFP has crapped out. I kept getting low fuel rail pressure code. today I got an open circuit on the N247 after unplugging and dielectric on both connectors.

I just wanted to verify with the internet what I am seeing.


In tank fuel pressure seems to match the rail pressure as I increase rpms.
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Address 01: Engine Labels: 06F-907-115-AXX.clb
Control Module Part Number: 3C0 907 115 F HW: 3C0 907 115 G
Component and/or Version: 2.0l R4/4V TFSI 0030
Software Coding: 0404010A19070160
Work Shop Code: WSC 66565 257 00032
VCID: 2345F0A6E2941097F7-8076
3 Faults Found:

008852 - Fuel Pressure Regulator Valve (N276)
P2294 - 004 - Open Circuit
Freeze Frame:
Fault Status: 01100100
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 316627 km
Time Indication: 0
Date: 2022.09.08
Time: 21:04:54

Freeze Frame:
RPM: 852 /min
Load: 34.9 %
Speed: 0.0 km/h
Temperature: 20.0°C
Temperature: 8.0°C
Absolute Pres.: 970.0 mbar
Voltage: 14.097 V

000768 - Random/Multiple Cylinder Misfire Detected
P0300 - 001 -
Freeze Frame:
Fault Status: 01100001
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 316627 km
Time Indication: 0
Date: 2022.09.08
Time: 21:05:05

Freeze Frame:
RPM: 789 /min
Load: 36.1 %
Speed: 0.0 km/h
Temperature: 21.0°C
Temperature: 8.0°C
Absolute Pres.: 970.0 mbar
Voltage: 14.351 V

000769 - Cylinder 1
P0301 - 001 - Misfire Detected
Freeze Frame:
Fault Status: 01100001
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 316627 km
Time Indication: 0
Date: 2022.09.08
Time: 21:05:05

Freeze Frame:
RPM: 789 /min
Load: 36.1 %
Speed: 0.0 km/h
Temperature: 21.0°C
Temperature: 8.0°C
Absolute Pres.: 970.0 mbar
Voltage: 14.351 V


Readiness: 0110 0100
Friday,16,December,2022,12:21:53:16872
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 22.3.1.1 (x64)
Data version: 20220401 DS337.0
www.Ross-Tech.com




Address 01: Engine (4G0 907 551 D)

12:21:51
IDE00589 Fuel pressure 490 kPa rel
ENG101818 Actual fuel rail pressure 4988.32 hPa
ENG99715 Fuel pump: activation 26.659 %
ENG100489 Fuel pump: actual fuel pressure 5197.93 hPa
ENG100969 Fuel pump: fuel pressure: I-controller -8.902 %
ENG100409 Fuel rail pressure: specified 39906.5 hPa
ENG101692 Fuel supply system: high-pressure regulator 34950.07 hPa

[dspl1236]

Yup, bad hpfp. Out in a known good used and its happy again. full fuel pressure to the rail. Back to boost.

The hpfp swap was almost as quick as a s/c belt swap

[joejoemackey32]

I was getting “running lean” and rough idling on my 2015 a6 2T at 6 yrs/120k miles and the HPFP change completely fixed it