A4 (B8 Platform) Discussion Discussion forum for the B8 Audi A4 produced from 2008.5

Significant error codes causing LARGE issues

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Old Mar 31, 2024 | 08:21 AM
  #21  
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I've checked the battery voltage at the battery and at the front end of the vehicle next to the windshield and they are identical. Is there somewhere else that I need to check?

Those are reading well over 12 volts
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Old Aug 16, 2024 | 10:46 PM
  #22  
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Originally Posted by 142 guy
I am seeing a couple of idle control errors and misfires on all the cylinders. I am not seeing any cam adaptation limits or cam chain related errors. The mileage for the reported events looks correct; but, the 2010 date is screwy. I don't see any of the other codes or problem that you reported. Write the error code numbers down and then clear the errors and then try driving the car to see how it drives. If problems re appear then use VCDS to confirm which codes re appear.

If misfire codes re appear, there are a pile of things that can cause misfires. The fact that you appear to be getting misfires on all four cylinders suggest that the problem might be fuel related rather than ignition related. It would be unusual for all four coils / plugs to go bad at the same time. Find and then check both the short term and long term fuel values. The decimal values for the PID identifiers should be 6 (short term) and 7 (long term). If the trim values are high positive numbers that means that the ECU is adding fuel to correct a lean running condition and lean ( high AFR values) can cause engine misfire. Off the top of my head I don't know the PID for the cam chain adaptation value. See if you can find that value. If you are approaching 5 deg you may have a cam chain issue which can cause valve timing issues which can lead to misfires.

An obvious question - is all the engine scheduled maintenance up to date? Is this engine an oil burner?
Hey, i just bought a 2010 s4 with a b8.5 2013 engine with 105k kms. Car started throwing tons of codes and the cam/crank P0018 code stayed when i cleared codes. full scan is attached. what do you think?
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OBDeleven_Log.txt (8.7 KB, 26 views)
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Old Aug 16, 2024 | 11:32 PM
  #23  
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Originally Posted by chaselaframboise
Hey, i just bought a 2010 s4 with a b8.5 2013 engine with 105k kms. Car started throwing tons of codes and the cam/crank P0018 code stayed when i cleared codes. full scan is attached. what do you think?
Really wish VoltasIT would get their heads out of their #$% and make the OBDeleven history log worth a damn.

19 Gateway
...
Faults:
...
02252 - Generator
Ok, so there's some issue with the Generator (02252 = generator), but what is the issue with the generator? It leaves out the actual error code, as well as all other information about the DTC.

You've got a lot of work to go on that vehicle. Errors all over the place; lot of them are known/common.

But the engine stuff, well, P0018 is chains, so looks like you're pulling the engine to validate the timing. It's basically saying the bank 2 (cyl 4/5/6; left side of car) intake cam position sensor is not reporting in time with the engine crank position sensor. You'd need a scope to really challenge that error. Misfires, SAI, lot of work ahead for you.

But that's a S4 3.0T, so not really related to anything here in the A4 forum, which is generally about the 2.0T. The B8 S4 forum is https://www.audiworld.com/forums/s4-...iscussion-134/ You should start a clean thread with your own specifics anyway.
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Old Aug 17, 2024 | 09:40 AM
  #24  
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Originally Posted by SMac770
Really wish VoltasIT would get their heads out of their #$% and make the OBDeleven history log worth a damn.



Ok, so there's some issue with the Generator (02252 = generator), but what is the issue with the generator? It leaves out the actual error code, as well as all other information about the DTC.

You've got a lot of work to go on that vehicle. Errors all over the place; lot of them are known/common.

But the engine stuff, well, P0018 is chains, so looks like you're pulling the engine to validate the timing. It's basically saying the bank 2 (cyl 4/5/6; left side of car) intake cam position sensor is not reporting in time with the engine crank position sensor. You'd need a scope to really challenge that error. Misfires, SAI, lot of work ahead for you.

But that's a S4 3.0T, so not really related to anything here in the A4 forum, which is generally about the 2.0T. The B8 S4 forum is https://www.audiworld.com/forums/s4-...iscussion-134/ You should start a clean thread with your own specifics anyway.
Thank you very much. My bad for posting on the wrong forum.
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