Aug 15, 2016, 12:52 PM
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Lambda O2 sensor engine location? V8 4.2!
Thread Starter
Audiworld Junior Member
Joined: Aug 2012
Posts: 21
Likes: 0
Great pics NAC5000, and good job! How are you going to spend the $1000 you just saved (compared to taking it to the dealer)?
Did you figure out what vacuum line it is? I can't figure out what it does from the pic.
Here is a good site with info on How to decode OEM VW part number and Audi part numbers, maybe you can ease your worry if the differing O2 sensor numbers were due to a normal revision/upgrade.
MP4.2+6.0, good call on the vacuum lines!
MP4.2+6.0 do I know your name or do we call you MP, sorry if I forgot it because you are really a top contributor to the A8 forum.
Did you figure out what vacuum line it is? I can't figure out what it does from the pic.
Here is a good site with info on How to decode OEM VW part number and Audi part numbers, maybe you can ease your worry if the differing O2 sensor numbers were due to a normal revision/upgrade.
MP4.2+6.0, good call on the vacuum lines!
MP4.2+6.0 do I know your name or do we call you MP, sorry if I forgot it because you are really a top contributor to the A8 forum.
This was the other vacuum line broken...
I had 1.8ts and 2.0ts in the past and this engine is a new adventure!
Thread Starter
Audiworld Junior Member
Joined: Aug 2012
Posts: 21
Likes: 0
I just connected the vag com and before sensor replacement and vacuum lines fixing I had:
4 Faults Found:
17538 - Fuel Trim; Bank 2 (Mult): System too Lean
P1130 - 35-00 - -
17536 - Fuel Trim; Bank 1 (Mult): System too Lean
P1128 - 35-00 - -
17539 - Oxygen (Lambda) Sensor; B2 S1: Internal Resistance too High
P1131 - 35-10 - - - Intermittent
17549 - Load Calculation Cross Check: Implausible Value
P1141 - 35-10 - - - Intermittent
and now:
1 Fault Found:
17538 - Fuel Trim; Bank 2 (Mult): System too Lean
P1130 - 35-00 - -
4 Faults Found:
17538 - Fuel Trim; Bank 2 (Mult): System too Lean
P1130 - 35-00 - -
17536 - Fuel Trim; Bank 1 (Mult): System too Lean
P1128 - 35-00 - -
17539 - Oxygen (Lambda) Sensor; B2 S1: Internal Resistance too High
P1131 - 35-10 - - - Intermittent
17549 - Load Calculation Cross Check: Implausible Value
P1141 - 35-10 - - - Intermittent
and now:
1 Fault Found:
17538 - Fuel Trim; Bank 2 (Mult): System too Lean
P1130 - 35-00 - -
Tech Guru
Joined: Oct 2002
Posts: 8,009
Likes: 191
From: Olney, MD
looks like you had a broken line to a 'combi valve' as they are known. There are two of them, one for each bank. Check the line to the other one.
But judging from the 17539 code, you replaced the 02 sensor on the bank that had the broken vacuum line in the picture. So it's likely you still have a broken or leaking vacuum line on that bank you replaced the 02 sensor.
Keep looking.
But judging from the 17539 code, you replaced the 02 sensor on the bank that had the broken vacuum line in the picture. So it's likely you still have a broken or leaking vacuum line on that bank you replaced the 02 sensor.
Keep looking.
Thread Starter
Audiworld Junior Member
Joined: Aug 2012
Posts: 21
Likes: 0
looks like you had a broken line to a 'combi valve' as they are known. There are two of them, one for each bank. Check the line to the other one.
But judging from the 17539 code, you replaced the 02 sensor on the bank that had the broken vacuum line in the picture. So it's likely you still have a broken or leaking vacuum line on that bank you replaced the 02 sensor.
Keep looking.
But judging from the 17539 code, you replaced the 02 sensor on the bank that had the broken vacuum line in the picture. So it's likely you still have a broken or leaking vacuum line on that bank you replaced the 02 sensor.
Keep looking.
I didnt found any other vacuum lines
thanks for your answer!
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