hey whats up ihave a2000 a6 2.7t my check engine light turned on i was wandering if anyone new what they where 1 one is p1423 manufacturer contrl auxiliary emisssion control. 2 is p1411 manufacturer contrl auxiliary emission. 3is p0741 torque converter ckt performance or stuck off. thank you for your help

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2000 A6 2.7T

Sec. Air Inj.Sys.,Bank 1
Flow too low 2)




- Check fuse for secondary air injection pump



- Check vacuum hoses



- Check piping from pump to secondary air injection valve (combi valve)
Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine Code(s): APB, BEL, Repair Group 26; Secondary air injection system







Sec. Air Inj.Sys.,Bank 2
Flow too low 2)




- Check fuse for secondary air injection pump.



- Check vacuum hoses



- Check piping from pump to secondary air injection valve (combi valve)
Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine Code(s): APB, BEL, Repair Group 26







17125 P0741



ATF level not OK or incorrect torque converter installed





- Check ATF level
Repair Manual, Automatic Transmission 01L, Repair Group 37



- Check torque converter code


Clutch for torque converter connection







No power transfer

Continuation



Pressure Control Valve -N218 mechanically faulty
Problems with ATF supply to Pressure Control Valve -N218

Torque converter pressure pressure valve faulty.
Torque converter clutch valve faulty.




- Read measuring value block page 01-120 ; display group number 007 and check permissible converter slippage.



- Replace Pressure Control Valve N218 or replace valve body if necessary.
Repair Manual, Automatic Transmission 01L, Repair Group 38
Continuation

[hr]

[align=right]01-71[/align][/align]









Continuation for DTC
17125 P0741
Clutch for torque converter connection



Clutch for torque converter faulty or worn




- If necessary replace torque converter.
Repair Manual, Automatic Transmission 01L, Repair Group 32






No power transfer



Electrical activation of Pressure Control Valve -N218 faulty




- Perform corrective action according to DTC code number 18237/P1829 or 18238/P1830


Note for DTC 17125 / P0741:






The ratio between transmission input RPM (-G182) and engine RPM with engaged converter clutch does not make sense (implausible). [/align]

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2000 A6 2.7T 6sp MT
Ebony Pearl/Tungsten

thank you for your help

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2000 A6 2.7T

Hey i have the same problem with my car now. I have the same exact 3 codes. I replaced my secondary air pump. And checked hoses. Still the same. And for the torque converter. Did you happen to change it or did you find another solution for the torque converter code?