[Biturbos4] B5 S4 codes

[mike]

Gents, 

codes I have are, 

|  16514  |  P0130  |  O2 Sensor Circ.,Bank1-Sensor1 Malfunction  |
|  18010  |  P1602  |  Power Supply (B+) Terminal 30 Low Voltage  |
|  16955  |  P0571  |  Cruise/Brake Switch (A) Circ Malfunction  |
|  16486  |  P0102  |  Mass or Volume Air Flow Circ Low Input  |
|  18030  |  P1622  |  Engine coolant temperature signal range/performance  |
|  16490  |  P0106  |  Manifold Abs.Pressure or Bar.Pressure Range/Performance  |
|  16538  |  P0154  |  O2 Sensor Circ.,Bank2-Sensor1 No Activity Detected  |
|  17528  |  P1120  |  O2 Sensor Heater Circ.,Bank2-Sensor1 Open  |


second & third went and haven't returned after clearing, the others have come back.

Does anyone know if there are any upstream fuses or other faults that could be giving false positives or am I safe in assuming that the actual sensors mentioned have failed?
Cheers

      From: tom winter <tom at tomwintermedia.com>
 To: quattro at audifans.com 
Cc: mikemk40 at yahoo.com 
 Sent: Wednesday, 5 November 2014, 20:08
 Subject: B5 S4 codes
   
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
>
>