Quote:
Originally Posted by pallen747
Thanks Blue62.
I tried the reset function, but I will try it again. The car has been running but just at idle. has been static for 3 years outside (in Iceland but UK car). The problems started then. Basically the owner had zero throttle response. He was told it was the Throttle body, which he replaced. Now it wont start. I came onto the project late as he needs held. As mentioned I am using a new Autel 808 obdi reader with latest updates, so I was assuming code read outs would be correct. Having said that even with a post Cat O2 sensor inop it should still start/run. May I ask where I can find the correct codes for an 03 Boxster S?
The Throttle body is the only work that I am aware of. No Mods.
I will check under the drivers seat for dampness. Is that where the ECU lives?
Thanks Paul.
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First: your code reader is reading correctly. Its when you look up the code.
you have to make sure your looking at the proper DME/ECU series.
For A 5.2 series DME/ECU the P-1121 code is for the throttle issue.
For a 7.2 series DME/ECU the same P-1121 code is for the O2 sensor so you have to be careful.
You have a 2003 year model so you will have the 7.2 series or maybe even the 7.8 series DME/ECU.
Second:
I look up codes in the Bentley Service Manual then also try to cross check them online.
Because the Bentley is not always correct.
Third:
The immobilizer is under the drivers seat (left hand in US) they are very susceptible to moisture.
If it is the issue it will cut all spark and fuel to the engine.
Fourth:
If it is not starting or not even firing the first thing to do is see if you are getting spark.
then test for fuel.
you can listen for the fuel pump to run when you turn the key on.
But a better way is to test fuel pressure at the fuel rail in the engine bay.
There is a presta valve on the fuel rail that you can attach a fuel pressure gauge to.
If you not getting fuel or spark then the immobilizer is most likely the issue.
Hope this helps
Let me know how you go
