I have read and researched these codes for a couple days now but I am very overwhelmed. I recently bought a limited vag com (highest rated on amazon for in the 50$ range) because my car was acting VERY rough. I didn't want to drive it but I could NOT miss my class so I was forced to drive my baby for 50 miles with my 3rd coil pack straight shot. Upon inspection of the car I found The rear 02 sensor was glowing after 25 miles. On my way home from school(returning 25miles) it was the catalytic converter glowing orange when I finally made it home. I replaced the coil pack and the car seems to be running fine but I'd like a second opinion on my specific situation. I'm really, really hoping I don't need to replace the 02 sensors or the catalytic converter... I'm one broke *** college kid. Of course, I am willing to watch/learn and perform any work needed myself.

If it helps I have driven the car for approx 800 miles since the incident and everything has been fine except for the occasional burning oil smell...

Here are the codes:

P1113
Oxygen (Lamda) Sensor: B1 S1: Internal Resistance too High

P1114
Oxygen (Lamda) Sensor: B1 S2: Internal Resistance too High

P0411
Secondary Air Injection System: Incorrect Flow Detected

P1548
Boost Pressure Regulation Valve (N75): Open Circuit


I found the N75 part listed on genuinevwaudiparts.com for 120$ Shipped. Hopefully this helps someone.

 

P0411 - you might have a leaking vacuum line or your secondary air pump is gone.

P1548 - I'd start by making sure your N75 is plugged in to it's outlet and the valve it self is actually inside the inlet pipe.

Did you by any chance clear the codes?

 

I just added a gas cap to my car(recently stolen) hoping that would solve my N75 problem and re cleared the codes... after driving for 2 days and about 45 miles I have only had the P1548 code come back... hopefully it stays that way.. I'll be checking the vacuum lines tomorrow morning as well as having a closer look at that smog pump. I will update.