Audi A4 B6 Cab fault codes

[vwnutant]

After some help some of the below means nothing to me really !?....

Car- Audi a4 bfb 163bhp

remapped
k & n induction kit
rear boxes removed and new tailpipes


Five codes came up this evening - ( I did have the emissions light on presume that is lambda?)

AUDI A4 2003 BTB 163BHP ENGINE FAULT CODES –


DTC – SCAN

5 CODES FOUND 09/10/14

1) 17522-

17522


P1114


Heated oxygen sensor (HO2S) 2, bank 1 - heater resistance too high


Wiring, HO2S


2) 18010

18010


P1602


Engine control module (ECM) - supply voltage low from battery


Battery was disconnected, battery discharged, alternator, wiring open circuit, fuse


3) 16795-

16795


-


Secondary air injection (AIR) system - incorrect flow detected


AIR pump, AIR valve, AIR hose(s)


4) 18043

18043


P1635


CAN data bus, AC - no signal


AC control module trouble code(s) stored, wiring, matching resistor in ECM



5) 18058

18058


P1650


CAN data bus, instrumentation - no signal


Instrumentation control module trouble code(s) stored, wiring, matching resistor in ECM







Are the above common/anything to change/worry about ??

ive cleared the codes and will check again after work tomoz


Cheers
Ant

 

[fourcircle]

the O2 sensor error indicates that the sensor needs to be replaced or the cat is on the way out and needs to be replaced. If you replace the cat you should really do the sensor too so I'd suggest replacing the sensor first and see how it goes before changing the cat