Need advice please. I just performed output test and got these results

[audis4noob]

Getting misfire o300 code and on cylinders 2, 5 not just cylinder#1. (Didn't feel like uploading more pics)

Replaced egt and keep getting imtermitant codes (low, short to ground, and implausible signal.)

About to order a secondary air pump relay.

Does short to earth mean I need to replace all of them? or just check hose connections and maybe clean parts with some contact cleaner ?

Thanks in advance guys

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[zillarob]

Not a fun one. Check the fuses, 34 I think is power to all that stuff.

[axnjaksn]

i think short to earth means ground. But i could be wrong. There has to be some relay or fused connection or something related to all of those thats failing. Thats what it seems like

[S4tech2]

There is another thread going on with a similar issue. There is some wiring diagrams that could help so check it out and start checking fuses

[treysgreen]

I'm guessing if you clear them they come back?

[vavJETTAw36]

Check your grounds and like the others are saying check the fuses. Some funky stuff can go wrong when ground connections go bad. It's easy enough to check grounds with a simple multimeter.


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[zillarob]

i think short to earth means ground. But i could be wrong. There has to be some relay or fused connection or something related to all of those thats failing. Thats what it seems like

It doesnt know the difference, it just knows it isnt getting power.

You might be on to something with the relay. The fuel pump relay supplies power to 3 fuses, 34 is one of them.
Some guys have gotten in there and tweaked the contacts to tune them up when a fuse wasnt being powered.

Looks like all his codes are fuse 34/fpr related, but the inj are kinda a curve ball.

[audis4noob]

Zillarob just checked fuse 34 and its not blown.

S4tech2 do u know the title of the thread?

Treysgreen I'm not sure if u can clear them as they are not the reg codes it is under output testing. Is it just going through all parts and turning them on so I can test them? Idk why it would say short to earth (ground) though.

Vavjettaw36 how would I check the grounds with multimeter? Where are they located? Which grounds?

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[audis4noob]

Only codes I keep getting after clearing are random misfire 0300 and 0302, 0305 and sometimes 0301. And the egt codes.

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[zillarob]

If the codes dont come back you good, til you not good anyway

[treysgreen]

Zillarob just checked fuse 34 and its not blown.

S4tech2 do u know the title of the thread?

Treysgreen I'm not sure if u can clear them as they are not the reg codes it is under output testing. Is it just going through all parts and turning them on so I can test them? Idk why it would say short to earth (ground) though.

Vavjettaw36 how would I check the grounds with multimeter? Where are they located? Which grounds?

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I've seen these types of codes on cars that have had the battery removed or disconnected. I clear them with VAGCOM and they dont come back. If they do... well... good luck.

[audis4noob]

Ya they not going away. Every time i do the output test I get the same codes. And the misfire codes come back after cleared

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[S4tech2]

Zillarob just checked fuse 34 and its not blown.
S4tech2 do u know the title of the thread?

Treysgreen I'm not sure if u can clear them as they are not the reg codes it is under output testing. Is it just going through all parts and turning them on so I can test them? Idk why it would say short to earth (ground) though.

Vavjettaw36 how would I check the grounds with multimeter? Where are they located? Which grounds?

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Short to ground-fuse 29 blows immediately. It's like 5 threads down from this one. He also has a link to his other thread that is in the tech forum or something. Right now I was the last to post on it so look for that too

[audis4noob]

My cigarette lighter blows immediately. Prob not related but thought I'd mention it anyway. And thanks everyone for the info

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[zillarob]

Pull the penny out of it

[audis4noob]

So I guess what I'm asking is.. are the output tests used to test each individual part or is it telling me all those parts are bad and need to be replaced?

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[audis4noob]

All fuses look good. However the fuse box is missing screws and is not attatched to its bracket. I'll have to check the connections In The back like was suggested. I'll keep you guys posted. Thanks

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[audis4noob]

O and I heard it could be a penny stuck causing the CIG lighter fuse to pop. I'll have to take that apart another day

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[zillarob]

Output test is just to activate each individual output for a quick test. You listen to the modules or put the meter to the leads.

I think with what you are saying here, I would get a buddy to let you borrow a fuel pump relay and test again.
If that fuse isnt blown, you dont have a short and for some reason the ecu is not seeing the 12v on its end.

Prob mentioned already, but check grounds. Back of head and firewall behind the coolant res.

[audis4noob]

OK that's what I thought. I was confused. When output test is performed I hear each individual part clicking and can feel clicking by touch. I would assume that means those parts work? However some I didn't hear anything

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[audis4noob]

Fuel pump relay? Or secondary air pump relay? My misfires have gotten progressively worse past few months. Now I can Hardly push gas without it shuttering/ shaking.

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[audis4noob]

And boost is very spiratic

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[audis4noob]

I just ordered new 2.0t coil conversion. After I install that and check grounds and codes again I'll go from there and let u guys know.. Thanks again. There are no Audi mechanics in my area. (Tiny lil town) hours away from any dealership. So I really do appreciate ur guys input

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[audis4noob]

Also getting a lil backfire from exhaust

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[zillarob]

Forget about the misfire for now. You are prob lucky it even runs with whatever is giving you all those codes.

[audis4noob]

Well those pics are of the output tests, not from the fault codes.

The only fault codes I'm getting are random misfire 0300 and misfire in cylinder 1, 2, and 5. (Cylinder 1 usually shows up last) and the egt codes. Idk why the passenger side egt (just replaced) keeps working, then not working. I can see it at 940° sometimes 945°. And when Not working its at 35° on block 112.

Well i get a mil for check Tcm, prob because I have the p0741 torque converter code too but I'm pretty sure that's unrelated.

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[zillarob]

Get rid of those pics, mass confusion there
Short to ground is what vagcom says when there is a prob.

I hope you dont have emissions where you are, that tc code throws the cel and no passy pass for city folk.

[audis4noob]

*Update* Misfires fixed. I re gapped to 0.32 and cleaned spark plugs. They were way off, .050- .060

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[audis4noob]

Now just need to figure out why egt code keeps coming back.

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