Audi A3 1.6 8V Emissions

[Ryan12345]

Hi, I have an Audi A3 1.6 8V (Engine code BSE) which failed the emissions today. After a throttle body clean, it managed to pass but right on the 0.20% CO limit. The lambda and ppm are good. The front O2 sensor is reading 2V and pretty steady, seems rather high. The rear sensor is at a steady 0.7V. Is it likely that the front O2 sensor is faulty or perhaps the cat? Any help much appreciated

[Steve Q]

Might be worth doing a diagnostic check to see if the car flags up any fault codes. Would be cheaper to change the o2 sensor first in my opinion. 

[Ryan12345]

There's no fault code in any system on the car. I'm now wondering if it's a wideband sensor and that 2V is normal?

[Steve Q]

Could well be. I wonder if you're a3 ever had the emissions recall from Audi which might be playing up. 

[Ryan12345]

I checked on the gov website and there are no outstanding recalls, and I believe the emission recall was for diesel only, although I could be wrong

[Steve Q]

42 minutes ago, Ryan12345 said:

I checked on the gov website and there are no outstanding recalls, and I believe the emission recall was for diesel only, although I could be wrong

Correct it was only for diesel. Sorry I naturally assumed you had the 1.6tdi