jschick

I need some help on a 2009 S5, I am getting codes 0058776 Bank 2 rich off idle
and 088583 bank 1 lean at idle and also 000257 MAF implausable signal (intermittent)

any ideas on these?

I am also getting some system DTC memory errors on the ABS, and parking brake which are intermitent. (00473 and 01314)

this car has only 10k miles and has spent most of the last 2 years in storage

ryan_qttro

Try some G17 Audi fuel injector cleaner

devinsixtyseven

I could see an intermittent implausible signal from the MAF causing an incorrect mix and the bank 1 & 2 codes downstream. Connectors tight, MAF clean and reading correctly on a multimeter?

Seems I usually see you on the C5 forum...so I assume you'll get a laugh if I say "replace the CTS"

-S