Help with error codes P1103, P0139 and P0411
I wonder if anyone could give me any advise on what could possible be wrong with my newly purchased 2001 Audi A4 1.8T. The car recently displayed the orange emmision light on the instrument panel so I tested the car with vag-com and it gave me the following errors
P1103 - Oxygen (Lambda) Sensor Heating: B1 S1: Performance too Low
P0139 - O2 Sensor Circ.,Bank1-Sensor2 Slow Response
P0411 - Sec.Air Inj.Sys. Incorrect Flow Detected
Anyone have any ideas what could be wrong? The only thing I have noticed which I need to get looked at is a smell of petrol coming in the vents when air con off. I have also noticed the smell outside the car also but hard to pinpoint where it is coming from. Is the smell related to the errors. I also sometimes get a strange noise come from the engine compartment when I turn the ignition key in the morning. It is only brief but sounds like a pump or something but with a type of metallic sound. Is this normal?
Do you think I would be best to get the car into a audi dealer to get checked out or would a normal garage be able to work out these error codes?
Sorry for all the questions but I hope someone could spare the time to help me.