Few fault codes

[Morne]

Hi guys i have a few fault codes on my car and not sure what it means it is a 2000 Allroad 2.7t auto and codes are as follow

1. 17831 secondary air injector system bank 1 insufficent flow(P1423) inter mittend
2. 17819 secondary air injector system bank 2 insufficent flow(P1411) inter mittend
3. 16902 coolant temperture sensor (662) signal to hugh (p0118)

Is any of this seriuoes and what needs doing to fix it

Thanks

 

[Darran]

Have a look here.
http://www.audiforums.com/forum/aud...tem-insufficient-flow-bank-1-bank-2-a-183144/

 

[Morne]

Is this the correct temp sensor i need
http://www.ebay.co.uk/itm/AUDI-A6-A...5|Cars+Type:2.7+T+quattro&hash=item2a2adb927c