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Author Topic: Stage 2+ K04 Conversion Fuel Pressure Help  (Read 249 times)

Offline K03MK5

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Stage 2+ K04 Conversion Fuel Pressure Help
« on: June 20, 2024, 09:58:41 pm »
Hi all,





Getting the errors above plus epc light on the dash every time I fill up.  I have just recently had the k04 swap with all new parts.  Any ideas on what this could be?  Also anyone one in the Essex area that would be able to repair.

Thanks

thanks
« Last Edit: June 20, 2024, 10:00:31 pm by K03MK5 »

Offline ZoliWorks

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Re: Stage 2+ K04 Conversion Fuel Pressure Help
« Reply #1 on: June 20, 2024, 10:58:31 pm »
What parts did you fit, like what's changed? HPFP, injectors, rail pressure sensor and so on


That specific code relates to the regulator on-top of the hpfp. Check for cracks around it, check fuses and check if there's power coming through to it.
« Last Edit: June 20, 2024, 11:04:30 pm by ZoliWorks »
Mk5 Jetta 2.0 TFSI BWA | Mk6 GTI Front | BorgWarner K04 Turbo | Ta-Technix Air Intake | Ta-Technix 200 Cell Downpipe | Stock Intercooler | Stock Injectors | Vis Motorsport 175 bar HPFP | 300hp


Offline K03MK5

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Re: Stage 2+ K04 Conversion Fuel Pressure Help
« Reply #2 on: June 20, 2024, 11:18:44 pm »
Hi,

The spec is:

S3 Turbo with uprated thrust bearing
S3 Injectors
Toyosports FMIC
Vis Internals
Milltek 2.75" Non res cat back + HJS 200 Cell
Neuspeed Pflow Induction Kit
Uprated NJK Sparks
S3 Map and Rail Sensor









Offline ZoliWorks

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Re: Stage 2+ K04 Conversion Fuel Pressure Help
« Reply #3 on: June 21, 2024, 12:18:55 am »
Aight, I cant think of any other scenario where it would throw this code. The wiring leading to the regulator or the regulator itself might be faulty. Try doing an output test with VCDS.
Mk5 Jetta 2.0 TFSI BWA | Mk6 GTI Front | BorgWarner K04 Turbo | Ta-Technix Air Intake | Ta-Technix 200 Cell Downpipe | Stock Intercooler | Stock Injectors | Vis Motorsport 175 bar HPFP | 300hp


Offline pudding

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Re: Stage 2+ K04 Conversion Fuel Pressure Help
« Reply #4 on: June 21, 2024, 04:42:28 pm »
The pump looks a bit old. Could probably do with replacing. New ones come with a new pressure regulator.


2007 ED30 | 2009 TDI 140 | 2016 BMW 330D