CEL
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CEL
Up front I research the tech articles and other resources in the forum and did not find enough information to action. Compounding my problem is that I am in Korea where going to the Audi dealership is not an option if I still want to pay the rent. That said the mechanic that I do have access to only has the fills for VWs in his fault code reader. The following codes were generated using the VW fills in his reader. 17544 P1136 Bank 1 Mixture adaptation (add): System too lean and 17521 P1113 Bank 1 sensor 1: internal resistance too large. I have a stock 2000 A4 1.8T Q, the car still runs well with no appreciable signs of malfunction other than the 5GW CEL disrupting the serenity of my dashboard. The car has 112k on it and I do not believe the O2 sensors have ever been changed. Can anyone tell me if these codes do in fact indicate failing O2 sensors? If so should I replace both? Lastly how do I ensure that I order the correct ones the first time. Thanks for the help. WC05
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