CEL, with three codes (O2 sensor; air injection flow too low)....
09-09-2004, 03:35 PM
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CEL, with three codes (O2 sensor; air injection flow too low)....
Here's what the VAG-com said:
3 DTCs Found:
17521 - O2S: B1 S1: Internal Resistance too High
35-10 - - - Intermittent
17831 - Sec. Air Inj. Sys: Bank 1: Flow too Low
35-00 - -
17819 - Sec. Air Inj. Sys: Bank 2: Flow too Low
35-00 - -
From what I found via search, it could be the O2 sensor that causes the first, and perhaps the other two. Or, there can be vacuum leaks. Or both.
Am I missing anything?
I'm in warranty, so no worries if it isn't an easy home fix.
I cleared the codes, and in 1 mile the CEL didn't come back. We'll see....
3 DTCs Found:
17521 - O2S: B1 S1: Internal Resistance too High
35-10 - - - Intermittent
17831 - Sec. Air Inj. Sys: Bank 1: Flow too Low
35-00 - -
17819 - Sec. Air Inj. Sys: Bank 2: Flow too Low
35-00 - -
From what I found via search, it could be the O2 sensor that causes the first, and perhaps the other two. Or, there can be vacuum leaks. Or both.
Am I missing anything?
I'm in warranty, so no worries if it isn't an easy home fix.
I cleared the codes, and in 1 mile the CEL didn't come back. We'll see....
09-10-2004, 08:11 AM
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Re: CEL, with three codes (O2 sensor; air injection flow too low)....
It could be the secondary air injection pump or the one-way valves for the 2nd and 3rd codes. More likely it's the pump cause both banks were shot.
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