Anyone with full VCDS near Norwich? 17428 Code

markhux33

Member
Hi all,

I've got a 2004 Audi A2 1.6 FSI.

A couple of times recently when I've been driving about 30 miles or more I've stopped the car for about 20 mins.

When I've come back to the car and started it again it drives for a minute max and then the engine cuts out.

If you try and restart the engine it fires and reaches idle then immediately dies.

If I wait about 30 minutes the car starts and drives fine again.

The only code on VCDS-Lite is 17428 (P1020) - which decodes as "Fuel Pressure Regulation: Control Range Exceeded".

My hunch is that the Fuel Pressure Sensor (G247) in the back of the intake manifold is faulty.

Looks like a lengthy job to take it apart. I'd quite like to be able to view Engine Group 140 on VCDS to look at the fuel pressure to confirm my hunch but I've only got the shareware version.

Cheers,

Mark
 
Looks like a lengthy job to take it apart. I'd quite like to be able to view Engine Group 140 on VCDS to look at the fuel pressure to confirm my hunch but I've only got the shareware version.

Hi Mark,

I'm in Norwich and I've got the full VCDS. Quite happy to pop round if you want to make use of it. Drop me a PM and we can sort something out.

Cheers,
Stephen
 
Thanks Steve, PM'd you.

I'm pretty sure it's the fuel pressure sensor that's slowly failing so I'll look to replace that.

Can any more seasoned FSi campaigner advise whether I'm gonna be able to change it without lowering the engine from the mounts?

That's what the workshop manual says to get the manifold out but I'm hoping I might be able to get it the sensor by just pulling the manifold away without taking it totally out of the bonnet?

Thanks,

Mark
 
So it turns out it is possible to change the fuel pressure sensor without removing the manifold but it isn't easy!

If you remove all the bolts from the manifold and the throttle body you can pull it away from the engine just enough to unplug the connector and get a spanner on the sensor.

Going to put it back together at some point this week and see if it cured the problem. Waiting on some new torx bolts to arrive from Accu because almost all the bolts are either rusted or rounded off to some extent.
 
So it turns out it is possible to change the fuel pressure sensor without removing the manifold but it isn't easy!

If you remove all the bolts from the manifold and the throttle body you can pull it away from the engine just enough to unplug the connector and get a spanner on the sensor.

Going to put it back together at some point this week and see if it cured the problem. Waiting on some new torx bolts to arrive from Accu because almost all the bolts are either rusted or rounded off to some extent.
Well done. Sounds like a big job. I can do rescans in Norwich too if Steve is unavailable. Hope it fixed it
 
I just replaced the fuel pressure sensor G247 that sits in the intake manifold.

It also necessitated the replacement of most of the bolts that hold the throttle body, manifold and fuel lines as I don't think they'd ever been out before and they're generally hex heads so they all rounded off quite easily and needed an impact wrench to undo.

I replaced them with A4 marine grade stainless torx bolts from accu so hopefully it'll be an easier job next time.

To get to the sensor you need to remove the big intake pipe and the throttle body. Then it's two bolts from underneath and 6 on top and the manifold will come free from the engine.

It's really a two person job but if you have one person pull the manifold up and back against the firewall it's just possible to get a spanner in the nut of the fuel pressure sensor and turn it enough to unplug the cable through the slot in the manifold.

Then you can undo it completely and replace. Weirdly the new Bosch sensor is somewhat shorter in length which was very handy when it came to reconnecting the cable through that tiny slot.

I think Audi are right though that it's impossible to completely take the manifold out unless you drop the left and engine mount and lower the engine.

I drove it 300miles this weekend with no codes. Idle is silky smooth again and it returned 54.8 mpg so very happy!

Sent from my Pixel XL using Tapatalk
 
I just replaced the fuel pressure sensor G247 that sits in the intake manifold.

It also necessitated the replacement of most of the bolts that hold the throttle body, manifold and fuel lines as I don't think they'd ever been out before and they're generally hex heads so they all rounded off quite easily and needed an impact wrench to undo.

I replaced them with A4 marine grade stainless torx bolts from accu so hopefully it'll be an easier job next time.

To get to the sensor you need to remove the big intake pipe and the throttle body. Then it's two bolts from underneath and 6 on top and the manifold will come free from the engine.

It's really a two person job but if you have one person pull the manifold up and back against the firewall it's just possible to get a spanner in the nut of the fuel pressure sensor and turn it enough to unplug the cable through the slot in the manifold.

Then you can undo it completely and replace. Weirdly the new Bosch sensor is somewhat shorter in length which was very handy when it came to reconnecting the cable through that tiny slot.

I think Audi are right though that it's impossible to completely take the manifold out unless you drop the left and engine mount and lower the engine.

I drove it 300miles this weekend with no codes. Idle is silky smooth again and it returned 54.8 mpg so very happy!

Sent from my Pixel XL using Tapatalk

???

Thanks for the comprehensive information and sharing with us. It's rare to see an fsi fault from start to finish with a positive diagnosis and outcome. If only Audi had used quality sensors like they always used to, and is mainly the reason why the fsi enjoys a poor rep. This will in time be of huge benefit to us Fsi owners and debunk some of the myths about this tricky but ultimately superb little engine.Thanks again.

This should be made into a sticky.
 
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Hi Mark,

I'm in Norwich and I've got the full VCDS. Quite happy to pop round if you want to make use of it. Drop me a PM and we can sort something out.

Cheers,
Stephen
Hi I'm jn norwich and have 2009 passat cc I need my steering angle/assist recoding calibration is this something you can help with at all
 
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