Error code P0089

[Okedokey]

Where did you read that might solve our issue? What is the price and part number of that filter?

I'd buy 3 right away if it actually cleared your p0089 code

Further up the thread someone installed this part as it is 6.6bar. The part number is 1K0201051K.

Trying to ascertain that it fits and works without modification.

[BenMTL]

Further up the thread someone installed this part as it is 6.6bar. The part number is 1K0201051K.

Trying to ascertain that it fits and works without modification.

Try it and let us know? Maybe plugging the 3rd port with the plugs that come with fuel filters will be enough?

[Okedokey]

Try it and let us know? Maybe plugging the 3rd port with the plugs that come with fuel filters will be enough?

I tried it, the filter didn't fit. The middle plug on the end with 2 outputs is too small. Not sure how to solve that one.

[BenMTL]

I tried it, the filter didn't fit. The middle plug on the end with 2 outputs is too small. Not sure how to solve that one.

Sucks, was hoping that would be an easy win. What about getting the Bosch 300 to work? How easy/difficult was that with the OEM LPFP? I have Quattro FYI.

[Okedokey]

I have a FWD, the DW300c is easy fit, however on the AWD it is more complicated to get it to work due to the shape of the fuel tank I believe. Not impossible, but I haven't done that.

Not sure what the Bosch 300 is, a fuel pump? I am talking about fuel filters of course.

[mbogosia]

I just had this code pop up and after changing my fuel filter it immediately went away. Sounds like I was one of the lucky ones...... at least for now.

[mbogosia]

Well the code went away by itself when I changed the fuel filter but now it is back on. Damn I knew I couldn't be that lucky. I know that there is that sensor on the hpfp but I might also replace the in tank fuel pump.

[pezgoon]

Well the code went away by itself when I changed the fuel filter but now it is back on. Damn I knew I couldn't be that lucky. I know that there is that sensor on the hpfp but I might also replace the in tank fuel pump.

I haven't read your earlier stuffs but you have removed the hpfp and checked the condition of it right?


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[mbogosia]

I removed it to replace the Cam Follower about 4K miles ago. Everything including the old Cam Follower looked good to me.

[arankaspar1]

Anyone know what the spec is on this Block08/addr 103?
My Stasis tune (bought by Revo) is requesting -12 degrees timing retard on all 4 cylinders after 5700RPM and up.
I have replaced... S3injectors, MAF, MAP, RailPressureSensor, Filter, LPFP, FuelControlModule, CamFollower, N80PurgeV., Swapped HPFP with my old spare and it's still asking for that timing about that RPM.

My number one question now is do you guys think this is mechanical (fuel) related or tune related? Last engine lost oil pressure and died instantly after me owning car for 1.5 yrs. Not sure of the timing numbers from before unfortunately.

2nd/3rd Gear Pull log...
https://1drv.ms/x/s!Akrf9oowYt38hTtY...yx34g?e=kPaxDf

[KingKostas]

Anyone know what the spec is on this Block08/addr 103?
My Stasis tune (bought by Revo) is requesting -12 degrees timing retard on all 4 cylinders after 5700RPM and up.
I have replaced... S3injectors, MAF, MAP, RailPressureSensor, Filter, LPFP, FuelControlModule, CamFollower, N80PurgeV., Swapped HPFP with my old spare and it's still asking for that timing about that RPM.

My number one question now is do you guys think this is mechanical (fuel) related or tune related? Last engine lost oil pressure and died instantly after me owning car for 1.5 yrs. Not sure of the timing numbers from before unfortunately.

2nd/3rd Gear Pull log...
https://1drv.ms/x/s!Akrf9oowYt38hTtY...yx34g?e=kPaxDf

prob intake cam


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[arankaspar1]

prob intake cam


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Like the intake cam sensor... or like VVT is out of alignment?

[KingKostas]

Like the intake cam sensor... or like VVT is out of alignment?

the lobe on ur intake cam has prob worn a bit if u ever changed ur cam follower and it was destroyed, or maybe need a different tune


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[arankaspar1]

the lobe on ur intake cam has prob worn a bit if u ever changed ur cam follower and it was destroyed, or maybe need a different tune


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It's probably this bs tune. Stasis did weird shit with the file to make it run on the stock hpfp for Audi. (so they could still hold the factor warranty)

Going Stage 3 with GIAC. HPFP upgrade/PRV on it's way.

[KingKostas]

It's probably this bs tune.

def get another tune asap see if anything changes, doubt stasis even still tunes these lol


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[Stretch625]

Just had the fuel filter replaced an hour ago with an OEM and the P0089 code popped up twice. And CEL. Changed the cam follower and fuel rail sensor around 1200 miles ago. Never saw this code since buying my2007 2.0t.

[007J]

I am reviving this thread incase anyone in the future looks to reference this for troubleshooting like I did. Here's the short version of where I'm at with the code.
1) Replaced fuel filter and cam follower with OEM.
2) Replaced LPFP and Module with OEM
3) Replaced HPFP with OEM Parts, replaced cam follower again, saw intake cam looks a bit rough on just one side. First time the cam had been facing that way for me to notice.
4) Replaced G410 Thrust sensor
5) Replaced fuel filter again with 6.6 bar filter (Drakelore's DIY gti conversion), exact same fuel pressure and duty cycle at idle for LPFP. 5.15bar warmed up, 65-69% lpfp duty cycle on brand new stuff.

I can't see any breaks in the wires for the harness. I haven't put a multimeter to the G410 yet. The connectors for the HPFP and LPFP are broken but have never seemed loose when checked, or disconnected at all. They still seat in very well.

I'm running out of ideas. I'm considering the ECU relays (does anyone have the PN for the 614?), foreign object damage somewhere in the lines, or worn out intake cam.

Chase this code at your own peril.

[noyesclt]

Please supply VCDS measurements with graph of fuel pressure vs RPM during acceleration from 0-50

[A4 Quattro]

Since this thread doesn't seem to die, I'm gonna go ahead and share my attempt to battle this code. Story time...

I bought the car in December 2021. Code popped on for the first time in February 2022. I was going through fixing some of the issues the PO had neglected, and level setting the routine maintenance items, as this car didn't come with service records. PO had never mentioned this code popping up before, but to be fair, there were more than a couple things the PO failed to mention when selling me the car.

I already had a cam follower ordered and was waiting for it in the mail when the code popped up. After reading up on this thread and others, I also bought the fuel pressure sensor on the HPFP, and a fuel filter, planning on starting with the easier/cheaper items and working my way up.

When I replaced cam follower and the pressure sensor on HPFP, cam was not in correct orientation to get a look at it unfortunately, so that's still on the table. The cam follower I took out looked fine. PO said it had been done recently, and might have been telling the truth. Code was back within 48 hours after being cleared.

A couple days later, the OEM fuel filter arrived, and I threw that in. The code stayed away for two months! Here I was thinking I was one of the lucky ones. Nope.

I let the code sit there over the weekend while I continued to research this thread and others. I drove the car to work on Monday, and made it halfway there before realizing the CEL was gone! I immediately pulled out my code scanner and plugged it in to find the code still on the ECU. I cleared it, and finished driving to work. No more code... until Tuesday. It did the exact same thing. The CEL turned on for 24-48 hours. and then turns itself off, but still stays stored on the ECU. Rinse and repeat about 1-2 times a month. Every time it turns back on, I check it to make sure it'll be the same thing. The last time I checked it, I got a different error description, but the same code.

I struggle with blindly throwing parts at this issue trying to chase down a code that seems to be nearly impossible to get rid of. But at the same time, the car seems like it has fueling issues that should be addressed. It struggles to start sometimes, or will start and then almost immediately die. Once the car is running, it idles well, and doesn't feel like it's struggling to keep supplying fuel under hard pulls. I want the satisfaction of coming back to this thread with no code for an extended period of time. But only time will tell.

[ifloppedtrips]

Replace the N205 valve


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[Jayz691]

Replace the N205 valve


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Isn't that the VVT solenoid? How would that affect fuel pressure?

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[007J]

A4 Quattro, I'm just slightly ahead of you in parts replaced, hah. Don't throw parts blindly, I already did that for you and it's not working. I'm about to try installing an RS4 fuel rail valve. Old one appears to be original, I'm hoping that's what it is. My intake cam is a little scratched up in some places, but hoping that's not it. Everything else is new now. If you have VCDS, we should compare logs and see if our problem is the same or different symptoms.

[007J]

Some other resources on this that were probably found somewhere on here Audizine at some point, but I don't remember anymore. I've had the code too long, hah.
https://www.vwvortex.com/threads/p00...issue.4715303/
http://wiki.ross-tech.com/wiki/index..._Specification
https://forums.ross-tech.com/index.php?threads/13265/

[ifloppedtrips]

Isn't that the VVT solenoid? How would that affect fuel pressure?

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From the symptoms he was describing that’s exactly how mine was acting before replacing the VVT solenoid.


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[Jayz691]

From the symptoms he was describing that’s exactly how mine was acting before replacing the VVT solenoid.


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Did you have a p0089 code too? Its a rail pressure code.

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[Theiceman]

Isn't that the VVT solenoid? How would that affect fuel pressure?

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ok in theory ........

the car is looking for fuel pulses from the HPFP and if it doesnt see them when expected it flags a fuel pressure issue ...
if you have a failure of the VVT it can change the cam timing slightly so the pulses are not when the ecu is expecting them, they are shifted as the intake cam has been shifted by a failing VVT.

This is more prevalent on the B8 series but its the same principle, when the timing chain stretches enough it puts the cam enough out of phase that it flags fuel pressure issues as the cam driving the HPFP out of time ....

not saying this is the cause of fuel pressure issues but it can be a factor not to be discounted.

[ifloppedtrips]

What he said


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[Jayz691]

Hmm, interesting thought.. But wouldn't you have some sort of timing code, if its off far enough to cause this? Didn't realize the timing of the hpfp lobe was that important. I know some people change the lobes, so they would need to be EXACT when installing the new one.?

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[Jayz691]

What he said


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Did you have any timing correlation, or advancement codes?

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[Theiceman]

I know it's not the same animal but in the.b8 you can easily measure chain stretch .bad ones really stretched will throw a fuel pressure code but not timing until the chain actual jumps.
Lol that's engineering for ya.

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