Calling Audi gurus!

[B6_A4_Kid]

My car just won't ever run right, I am not sure what my first plan of attack should be. Here are all of my fault codes, sorry I only have vcds lite for right now. Wanting to upgrade soon though.


VCDS-Lite Version: Release 1.2
Saturday, 09 January 2016, 16:10:44.
Control Module Part Number: 8E0 909 518 AK
Component and/or Version: 1.8L R4/5VT G 0004
Software Coding: 0016751
Work Shop Code: WSC 63351
VCID: 79856EE770C1
10 Faults Found:
17519 - Oxygen (Lambda) Sensor Regulation: Bank 1: System too Lean
P1111 - 002 - Lower Limit Exceeded
17887 - Shareware Version. To Decode all DTCs
P1479 - 008 - Please Register/Activate
17544 - Shareware Version. To Decode all DTCs
P1136 - 001 - Please Register/Activate
16795 - Secondary Air Injection System: Incorrect Flow Detected
P0411 - 002 - Lower Limit Exceeded
18010 - Shareware Version. To Decode all DTCs
P1602 - 002 - Please Register/Activate - Intermittent
16683 - Shareware Version. To Decode all DTCs
P0299 - 002 - Please Register/Activate - Intermittent
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 008 - Implausible Signal - Intermittent
16685 - Shareware Version. To Decode all DTCs
P0301 - 008 - Please Register/Activate - Intermittent
16688 - Shareware Version. To Decode all DTCs
P0304 - 008 - Please Register/Activate - Intermittent
18339 - Coolant Fan Control Module (J293): Malfunction
P1931 - 001 - Upper Limit Exceeded - Intermittent

Please help me out guys, I'm at a loss here

[B6_A4_Kid]

I'm still waiting on a new suction pump, I superglued the other one but while doing to I broke the breather check valve, the small tab off to the side. I have ordered that aswell, do you think this is what's causing these codes?

[B6_A4_Kid]

The pump is still leaking even after I glued it

[old guy]

I'm still waiting on a new suction pump, I superglued the other one but while doing to I broke the breather check valve, the small tab off to the side. I have ordered that aswell, do you think this is what's causing these codes?

I assume you are referring to this check valve when you mentioned the "small tab to the side".



The side port on that check valve is what charges the vacuum canister located underneath the front drivers side fender. The vacuum canister is what provides vacuum for the N112 that opens the combi valve on a cold start. If the combi valve doesn't open you will get a P0411.

That broken side port will also manifest itself as a vacuum leak which will give you the P1111, P1136 as well as the P30X misfire codes.

Heres the part number for the check valve: 058-905-291-B It's a $40 valve from the dealer. Here's the best price from anywhere: Clicky click® I bought 2 of them just to have as spares if I ever need one. One in the trunk and one in the garage.

[diagnosticator]

Help us help you by googling all the DTC fault codes and fill in the list of problems. I could do it but it is time consuming.

For the first DTC, showing lean fuel, several possible causes. Check for vacuum leaks in the vacuum hoses. If the SJP is leaking fix that first. Once the list of faults is filled in, there will be advice about how to deal with those. After copying the DTC numbers showing now, try clearing all the existing DTCs and see what DTCs reoccur.

[B6_A4_Kid]

Sounds good. Sorry guys I'll switch them over for you next time. I have ordered that check valve old guy posted. So I will throws those parts on hopefully by the end of the week. Is driving it like this going to cause anything horrible?

[B6_A4_Kid]

Also what do I do about the coolant fan control module and the vacuum brake booster? Sorry for all the questions

[old guy]

Also what do I do about the coolant fan control module and the vacuum brake booster? Sorry for all the questions

That broken check valve will reduce vacuum to the brake vacuum booster. That should correct itself after replacing the check valve. Try resetting all your codes and see if the intermittent fan control module one comes back. Post up if it does and we will figure it out.

See if you can temporarily plug up the broken port on the check valve. You will still have an issue with the SAI code but it should stop the lean code and misfires.

[diagnosticator]

Sounds good. Sorry guys I'll switch them over for you next time. I have ordered that check valve old guy posted. So I will throws those parts on hopefully by the end of the week. Is driving it like this going to cause anything horrible?

No.

[Captain_Panic]

Have you checked your spark plugs to see how they're burning?

[F16HTON]

Looks like vacuum leaks to me, probably form the SJP and the check valve. You and unplug you MAF and drive the car, you will not really have any power though.

[B6_A4_Kid]

I checked the plugs and they are a little on the white side for my liking, but they are bkr6es and from what my boost gauge leads me to believe its been tuned. I will swap them out for bkr7es when I get my other stuff in the mail and I will report back.

How would you recommend me plug the breather for now?

[mauromj]

I just came in here to let you know that your Audizine name is my Xbox live name....

Very strange.

[B6_A4_Kid]

Sorry about that man, I just came up with it and decided to use it

[B6_A4_Kid]

Well I have put my new parts in and there is no vacuum leak, and I am still running the bkr6es until I can get 7s and it's still misfiring like crazy! not sure what I need to do to fix this?

[old guy]

Now that you have fixed your vacuum leaks try resetting all of your DTC's and see what comes back. It could be any number of things. How does your wiring harness to the coil packs look? Pull back on the plug cover and look for any cracked wires that could be shorting out. How old are the plugs?

Also take a look at your MAF g/s at idle and see what it reads. You could also try unplugging the MAF sensor and see it the engine smooth's out. If it does that would indicate that you still have a vacuum leak somewhere.

[B6_A4_Kid]

I have reset the codes since I did that and the codes came back about a day later. My harness didn't have the rubber insulators and everything was bare copper when I got it. I have electrical taped it as best I can, but it hasn't been an issue until my vacuum leaks happened. The plugs have at most a 1000 miles on them

[MacFady]

Just out of curiosity, it won't affect how the car is running or make it run "rough", but do you hear your SAI pump run when you start the car? Front passenger side?

[old guy]

I have reset the codes since I did that and the codes came back about a day later. My harness didn't have the rubber insulators and everything was bare copper when I got it. I have electrical taped it as best I can, but it hasn't been an issue until my vacuum leaks happened. The plugs have at most a 1000 miles on them

Which ones came back? ALL of them? Is the misfiring just at idle or all the time? Have you checked your MAF g/s at idle? (MB 003) Did you try unplugging the MAF sensor to see if anything changes?

[B6_A4_Kid]

It doesn't do it at idle, and the cel only comes back on when I am boosting at 16 psi

[old guy]

Do you get a flashing CEL? Does the misfire stop as soon as you get out of boost? Which DTC's return?

[B6_A4_Kid]

Nothing flashes, and the misfire seems to be constant. It's only really bad when your on the freeway going 60ish, it will just vibrate like crazy! As soon as you let off its smooth but once you hit the gas again it starts again. Cold start seems to be good but once it's warmed up the idle is really rough

[B6_A4_Kid]

Not sure what to do about it

[old guy]

You mentioned that you are getting a rather severe vibration under load that goes away as soon as you reduce the load but no flashing CEL indicating a misfire. Are you sure the vibration is coming from the engine? Any chance you are getting a vibration from one of your drive axles?

[B6_A4_Kid]

It doesn't happen every time, it's done it before but it was a loose spark plug. Fixed that and it was good until now

[B6_A4_Kid]

I don't think it's my CVs, I mean it could be. But it is still misfiring so I want to fix that and see if that's what's causing it before I dig into drivetrain components

[old guy]

How new are your coil packs?

Sometimes they start out only failing under load. I have had two that failed that way. I have had others just quit all at once.

[diagnosticator]

I have reset the codes since I did that and the codes came back about a day later. My harness didn't have the rubber insulators and everything was bare copper when I got it. I have electrical taped it as best I can, but it hasn't been an issue until my vacuum leaks happened. The plugs have at most a 1000 miles on them

Replace the damaged wiring. No matter how well you tape wrapped the bare copper wires, that is not adequate insulation to prevent malfunctions of the associated electrical components. With the wiring insulation damaged, the electrical terminals are likely in poor condition also, negatively effecting reliable electrical contact of the wiring circuit terminal connections.

[walky_talky20]

10 Faults Found:

These 3 point to a fairly large vacuum leak - probably in and around the line to the brake booster. Could be the suction jet pump is cracked open or the large "L hose" is ripped.

17519 - Oxygen (Lambda) Sensor Regulation: Bank 1: System too Lean
P1111 - 002 - Lower Limit Exceeded
17887 - Brake Boost Vacuum System: Mechanical Failure
P1479 - 008 -
17544 - Long Term Fuel Trim Additive: Bank1 System too Lean
P1136 - 001 -

These 2 are probably not important right now.

16795 - Secondary Air Injection System: Incorrect Flow Detected
P0411 - 002 - Lower Limit Exceeded
18010 - Power Supply (B+) Terminal 30 Low Voltage
P1602 - 002 - Intermittent

Under boost code. Could be related to the vacuum leak discussed above. The leak may be both a vacuum and boost leak.

16683 - Boost Pressure Regulation: Control Range Not Reached
P0299 - 002 - Intermittent

These 3 could be related to the lean condition.

16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 008 - Implausible Signal - Intermittent
16685 - Cylinder 1 Misfire Detected
P0301 - 008 - Intermittent
16688 - Cylinder 4 Misfire Detected
P0304 - 008 - Intermittent

These seems to be a separate issue. I'd leave this one for last.

18339 - Coolant Fan Control Module (J293): Malfunction
P1931 - 001 - Upper Limit Exceeded - Intermittent

[B6_A4_Kid]

I have driven 158 miles since i last reset the codes, I just pulled them.
VCDS-Lite Version: Release 1.2
Monday, 25 January 2016, 19:39:37.
Control Module Part Number: 8E0 909 518 AK
Component and/or Version: 1.8L R4/5VT G 0004
Software Coding: 0016751
Work Shop Code: WSC 63351
VCID: 79856EE770C1
3 Faults Found:
16683 - Boost Pressure Regulation: Control Range Not Reached
P0299 - 002 - Lower Limit Exceeded
18339 - Shareware Version. To Decode all DTCs
P1931 - 001 - Coolant fan control module
17522 - Shareware Version. To Decode all DTCs
P1114 - 008 - 02 sensor?

[old guy]

At this point I think a boost pressure test would be in order.

The P1114 has to do with the rear O2 sensor. That one should not cause any performance problems.

[B6_A4_Kid]

Okay, I've still got the tennis ball from when I did it to my brothers car so I'll do that tomorrow when I'm off from work


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[B6_A4_Kid]

Replace the damaged wiring. No matter how well you tape wrapped the bare copper wires, that is not adequate insulation to prevent malfunctions of the associated electrical components. With the wiring insulation damaged, the electrical terminals are likely in poor condition also, negatively effecting reliable electrical contact of the wiring circuit terminal connections.

I am planning on doing this just pushing it as long as I can, and since the codes I just pulled show no misfiring I think I can push it a bit longer. Not a good idea it's just that harness is pricey because I want to get the 034 one


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[B6_A4_Kid]

Just so you can see what I'm working with, and I figured out how to upload pics. Here's one of the coil pack harness,


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[old guy]

I am planning on doing this just pushing it as long as I can, and since the codes I just pulled show no misfiring I think I can push it a bit longer. Not a good idea it's just that harness is pricey because I want to get the 034 one

That harness is pretty nasty. Replace it as soon as you can.

The ECM measures the torque pulse between firing events. If the pulse varies significantly between the same firing events over a period of time it gives a misfire code. The change in torque pulse can be caused by a faulty injector, spark plug, coil pack, whatever. You may have a random short that is causing a stuttering that you can feel but it isn't significant enough to give you a misfire code. That doesn't preclude the harness as the the source of your misfiring.

Replace the harness as soon as possible and go ahead and run a boost pressure test now.

[B6_A4_Kid]

Well I decided she was due for an oil change and while I was under there if found this piece hanging down I believe this part is for the underbelly pan. I currently don't have one but want to get one eventually. But for now so it doesn't drag can I just remove it since I will probably need a new one? Or does it hold anything else up with it?


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[B6_A4_Kid]

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[old guy]

Just remove all the busted up pieces then see about replacing the belly pan at your first opportunity.

Lots of guys just remove them for the convenience. I don't recommend it. The belly pan helps to keep the engine bay a lot cleaner, it protects the wiring, increases gas mileage, reduces noise and lowers the under hood temperatures.

[B6_A4_Kid]

Just remove all the busted up pieces then see about replacing the belly pan at your first opportunity.

Lots of guys just remove them for the convenience. I don't recommend it. The belly pan helps to keep the engine bay a lot cleaner, it protects the wiring, increases gas mileage, reduces noise and lowers the under hood temperatures.

I had read a post that you had input in about how they are actually beneficial. Since I saw you saying that I knew I needed one lol. I would have one but I bought the car without one

[tHatOne guY]

Just so you can see what I'm working with, and I figured out how to upload pics. Here's one of the coil pack harness,


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Having issues as well with my coil pack harness, picked up the OEM harness kit on eBay about 70-80$