Check engine code

[pilot4fn]

Originally Posted by Barcalude

2001 Boxster S, I got the following trouble code with my Foxwell scanner: P0430/$11 “ Catalyst system efficiency below threshold bank 2”. I understand that this is an O2 sensor, but which one.? Thanks

Like JFP mentioned, the code is most likely related to the cat performance.

Bank 2 is on driver side at the Boxster (left hand side driven cars). This means that it would be the later O2 sensor on bank 2 that sniffs the cat problem.