B5 S4 codes

[tom winter]

For the B5 platform, the forums at Audizine are pretty good. Do some
searches and if you can¹t find anything, then maybe post up some
questions: http://www.audizine.com/forum/forumdisplay.php/3-B5-S4-RS4


Tom 2001.5 S4 Avant


>From: mike [mailto:mikemk40 at yahoo.com]
>Sent: November 03, 2014 2:39 PM
>To: 'Quattro List'
>Subject: B5 S4 codes
>
>Long time no post but my old S4 has been retired at 230k miles and
>replaced with a "new" one, same age but *only* 100k miles.
>new one is doing 22 mpg (old one did 27) so codes were read.
>
>Seems there are lambda sensors not working plus maf isn't working but
>strangely, looking at blocks I have 50c inlet air temp which on a cold
>idling car in the UK is nonsense.
>Does anyone know where this temperature reading comes from? Is it MAF?
>Cheers
>Mike
>
>