please can anyone help me I have been a member for 1 year and I have gained a lot of information with the help of other members. my problem is on my 2005 2ltr Hdi it comes up with fault code P1598$ I have searched high and low on the internet and can not find this code, the car performs very well but every now and then the throttle sticks down it has been in and out of a Citroen dealer and they can not find anything wrong so in desperation my friend connected his scanner and came up with this fault code but doesn't know what it represents, hoping someone can help Tony