Starter Catalytic Converter on 2002 Boxster 986
 

Hello, my first visit to the forum as a relatively new owner!

I have an engine warning light for an ageing oxygen sensor pre-catalytic converter on my 2002 Boxster S. I managed to get a parts manual, and checked the car info, and it seems to tell me that the engine is a M96.21 type. However, when I look at the parts manual this engine has a starter catalytic converter. I had the car up on the jack for a peek and I can't see that mine has one. Can anyone shed any light on this? Could it have had a replacement exhaust system without starter cat, and would this even work with the missing sensors etc. associate with it? Or is it more likely my car, despite its serial number has the 96.20 engine (maybe a model crossover)?

The fault code is P1275 $0011 which I believe is the oxygen sensor pre-cat, but I am trying to check if it is pre-cat or pre-starter cat.....

Any hints greatly appreciated before I try do any fixing!
Cheers
Robert

When you looked underneath, did you see the manifolds, and if so did they look like #1 and 2?http://986forum.com/forums/uploads02...1704432707.jpg

If so, then the sensor should be #26 which is 986-606-127-01. Best practice is to replace in pairs (either the pre-cat sensors or post-cat).

The M96.20 is the 2.5 from the 1997-1999 models. :)

European order Boxsters do not have pre-cats or starter catalytic converters.
They just have a singe catalytic converter per bank.
Pre-cat converter cars were configured for North American sales.
You should still have an O2 sensor before the Catalytic Converter and an O2 sensor after the Catalytic Converter.

Thank you very much, both replies really help. Novice on Porsche maintenance, more used to tractors to be honest but at least you’ve pointed me in the right direction 👍🏻. Mine is not like the diagram posted it had no starter cats.