Fuel Trim: Bank 1&2 (Mult): System too Rich

Diagnostic Trouble Codes (DTC) / VCDS (VAG-COM) forum
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KiwiRS4
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Fuel Trim: Bank 1&2 (Mult): System too Rich

Post by KiwiRS4 » Tue Jun 30, 2009 1:11 pm

Hi Gents,

Had the engine light pop up on the way home today. Ran VAG-COM across it and found these two codes.

2 Faults Found:
17535 - Fuel Trim: Bank 1 (Mult): System too Rich
P1127 - 35-00 - -
17537 - Fuel Trim: Bank 2 (Mult): System too Rich
P1129 - 35-00 - -
Readiness: 0000 0000

I've cleared the codes but wondering what it could be. Recently (4K miles ago) had the MAFF, N75, 710N and Lamda's changed by Unit20, so I'm not expecting it to be any of those.

Regards,

John
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R5CPK
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Post by R5CPK » Mon Dec 14, 2009 12:03 am

I know this is an old post but did you find a solution to this?? I have the same fault codes stored. Didn't put the light on though.
2003 8L Audi S3
2007 B7 Audi RS4
1998 B5 Audi S4
2004 B6 Audi S4
2000 8L Audi S3
2001 B5 Audi RS4
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S2tuner
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Post by S2tuner » Mon Dec 14, 2009 3:46 am

Sounds like a/several boost leak(s) to me.
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Shoppinit
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Post by Shoppinit » Mon Dec 14, 2009 9:11 pm

Makes sense. If air that has been metered is escaping somewhere. What about MAF a problem?
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
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S2tuner
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Post by S2tuner » Mon Dec 14, 2009 9:15 pm

Shoppinit wrote:Makes sense. If air that has been metered is escaping somewhere. What about MAF a problem?
Failing MAFs usually throw the opposite codes, "mixture too lean" ;) howzya shoppinit? :lol:
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Shoppinit
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Post by Shoppinit » Mon Dec 14, 2009 9:30 pm

All good, thanks :) Car is running nicely, my head still needs some work though :) Regretting not getting that map when I had the chance ;)

How're you?
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
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S2tuner
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Post by S2tuner » Tue Dec 15, 2009 11:31 am

All good, busy as hell as usual, hopefully will see you again sometime soon in Chilly for that map ;)
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