1

My VW CC 2010 2.0L Sport CBFA has three oxygen sensors and two catalytic converters. The CCTA version has 2 oxygen sensors and one catalytic converter.

Since the engine is in a transverse 4 configuration, there is only Bank 1, but I'm confused on what numbers identify which sensor.

For my car the configuration is like this. Sensor 1 (closest to engine and on first cat) -> sensor 2 or 3 (dont know) -> cat 2 -> sensor 2 or 3 (dont know)

In a CCTA it's easy since obviously sensor 1 is upstream and sensor 2 is downstream, but for CBFA I'm left guessing.

They also use words like downstream, center, intermediate, upstream.

Does upstream = sensor 1? Does center = sensor 2? Does downstream = sensor 3?

Getting code p0420 and p2096

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.