03 Boxster S Check engine light

[Joe..]

edc said:

Hi Pope - now that you are nearer Reading, I don't suppose you do any 'private' work? ...

I'd be interested in knowing this too

[Pope]

Advice only; conflict of interest at work otherwise.

[Pac1807]

I appear to have purchased a 2003 boxster with the same fault.
I found this conversation and it describes the same issue I have had.
Is this fault something all Porsche specialists are aware of and what sort of costs get it rectified?

[APowell]

I am having a similar issue with a 2003 Boxster S. So far I have replaced both sensors and am being told it must require a new cat. Pope, I don't suppose you're still in the Reading area and offering assistance!?

[Pope]

Working at Porsche Reading; back in on Saturday morning - I am expecting a quiet one it being between Christmas and New Year ( ) so if you are passing pop in and ask for me - if your car fits the profile in the OP we should be able to form a plan??

[APowell]

Hi Pope, Thanks for the reply, only saw it this morning so missed your invitation to pop over....damn! Let me know when might be good for you as I don't live (or work far from you in Reading)

[Don]

I have an 03 Boxster S that I purchased new. When I first got it it burned out four lambda sensors in a row. When they replaced the fourth one under warranty they replaced the entire exhaust. That was it. problem gone. Never recurred and I still own the car.

[APowell]

Just thought I’d give you an update…..

Thank you Pope for all your help.…..DME upgrade carried out and I have now done approx. 250 miles in the last couple of weeks and the light hasn’t come back on!!

So looks like I replaced both sensors and probably didn't need to....hey, but at least I haven't shelled out on a new cat!! :-)

[Jorrocks]

Sorry, another resurrection of this thread, probably one for Pope!
I've just bought a 2003 986 and this morning the CEL came on (Car running fine). Our in-house mechanic pulled the code for me which was P2098. I wonder if this would fit with Pope's diagnosis? I think the car has been doing a lot of short journeys recently with it's previous owner, and I've just done 300 fairly quick motorway miles in two days. Might that be relevant?
Thanks in advance,
J

[cd1957]

Hi that P code comes up on cars needing software up date.

I have had 3 customers with same issues, 2 resolved with update,1 still comes on at irregular intervals, at 1000 onwards.


Chris

[Labr_dk]

>>2004 cars didn't suffer the map anomaly like the 2003 cars; but the easy way to check is the RKAT values - they start at 0.00; if they increase in a positive direction an adaption is being made to richen the mixture; negative adaption reduces fuelling, weakening the mixture. The erroneous map placed the RKAT values at 3.00% meaning a very small window until CEL (threshold is +/-4.50%).
<<

I have a 2004 Boxter S which suffers from the CEL coming on. So far all 4 O2 sensors have been changed and now they talk about both Cat's.
The light comes on while driving steady speed, highway or motorway.
I will ask about the RKAT values, but what could cause them to end outside the +-4.5% interval ?
Thanks for your insights !
Br
Lars
Ps. It has run 110.000 miles only using 98-100 Octane fuel.

[Brassyboy]

Angelus said:

Pope talks sense and has made a very kind offer, if I was near Swindon I would accept.

I have a similar problem light on no effect on performance 15min after filling up now checking filler cap will it reset itself if that's the problem

[Brassyboy]

Angelus said:

Pope talks sense and has made a very kind offer, if I was near Swindon I would accept.

I have a similar problem light on no effect on performance 15min after filling up now checking filler cap will it reset itself if that's the problem