Audi A3 TDI 110 (2000) Error Codes 15.3 and 50.3: What Do They Mean?

Model: Audi A3 TDI 110 2000 Fault Code: P1530 Posted: 2011-08-08 02:03

Hi everyone, Over the past few months, I've been experiencing error code 15.3 on CAN bus channel 1 of my Audi A3 TDI 110 (2000) climate control system. My vehicle was recently serviced at an Audi dealership for a car meter replacement, but they provided no explanation regarding this specific fault code. Since yesterday, I've also started seeing error code 50.3 — which appeared several months ago and disappeared for a few weeks before reappearing. Can anyone clarify what these diagnostic codes (15.3 and 50.3) indicate in terms of the affected vehicle components or systems? Thanks for your help!