I have two codes p0400 and p0101 i know p0400 is for egr valve dont know whats wrong seems to be fine cant find the leak i can not reach the exhust port to see the gasket ;( need help with that . and p0101 ahhhhhh cant find anything., for leaks hoses tb everything seems to be fine also....dont know what to do .....;( help please

 

Hi Javigo,

We'll be happy to try to help. I had to look at some of your other posts to see that your car is a 2004 XJ8. I am attaching the 2004 DTC Summaries, which will help explain most of the Diagnostic Trouble Codes on an '04 X350. I would highly recommend that you download the X350 Workshop Manual, which is available for download from this forum in six sections at these links. The DTCs that begin with the letter P are explained in the Powertrain section, along with possible causes and resolutions:

http://www.mediafire.com/download/md...f+contents.pdf
http://www.mediafire.com/download/aa...nformation.pdf
http://www.mediafire.com/download/n3...2.+Chassis.pdf
http://www.mediafire.com/download/9b...Powertrain.pdf
http://www.mediafire.com/download/0i...Electrical.pdf
http://www.mediafire.com/download/4j...+and+Paint.pdf

I would also recommend that you download the 2004 Electrical Guide at this link:

http://www.jagrepair.com/images/Elec...al%20Guide.pdf


And so that others can help without having to ask about the details of your car, please edit your signature to add this information. Hover your cursor over your username in the upper right corner of this page; in the dropdown menu click on the first selection, User CP (Control Panel). In the left column of your Control Panel, under Settings & Options, click on Edit Signature and add your vehicle details there (Year, Model, Engine Displacement (for example, 4.2L V8).

You can also use the forum Search feature to search your fault codes (DTCs, or Diagnostic Trouble Codes) to see if other members with similar cars have resolved the same codes.

Cheers,

Don