Wilson29

I'm new to this forum... Let me say hi first....

I just bought an S4 B7 A/T 4.2 quattro recently and going through pain on unstoppable engine codes.... Having paid nearly 10k HKD to the garage but the problem still persists.... I've read a lot of threads from this site and have been trying to tell the technician... But huh.....

I have been having P1411, P1423, P1136.. And then after I cleared that and test drive a few days, P0491, P0492, P0171 came up....

I understand the meaning of the codes after having searched in this website... But then... Are these codes all possibly caused by ... Say... More than one hoses leak? Of that's the case I would ask the garage to focus on any leakage on the hoses....

Those codes were all generated while I was driving at a constant speed... Not starting up or anything while the secondary injection pump was working (i presume)..... They just popped out... Nothing could be felt from the car... No choking no misfiring no nothing... And the car just being driven as normal....

Sighs.....

Thousand thanks.....