2-3-2 fault code long term fuel too rich or weak

Sep 16th, 2003, 16:53

I have a recuring 2-3-2 fault code apprearing on my 850T5 this is I believe a long term fuel mixture proplem??? However what is the likley cause and how to fix it. It seems to happen on the overun when slowing for a roundabout for example. I am runnung on 95RON fuel. Interestingly when I was in france last month using 98RON (only a cent per litre more expensive over there) the fault never occoured over 3000 miles. Anyone any ideas please!

liuleichan · Sep 16th, 2003, 17:02

>I have a recuring 2-3-2 fault code apprearing on my 850T5
>this is I believe a long term fuel mixture proplem??? However
>what is the likley cause and how to fix it. It seems to happen
>on the overun when slowing for a roundabout for example. I am
>runnung on 95RON fuel. Interestingly when I was in france last
>month using 98RON (only a cent per litre more expensive over
>there) the fault never occoured over 3000 miles. Anyone any
>ideas please!

I am wildly guessing, but could it be related to the knock sensor (affecting the timing), or whatever other sensor(s) regulates the fuel richness in the mix?

Lei Chan

rstrang · Sep 16th, 2003, 17:06

Hi,

Have a look here http://www.volvospeed.com/Repair/vacuum_lines.htm

Richard

sholtby · Sep 16th, 2003, 21:04

Yes I had exactly the same problem and the vacume line elbow was split where it connects to the inlet manifold behind the power steering pump. I have made a DIY repair. It is really difficult to get to.

Simon

Chris_Rogers · Sep 16th, 2003, 21:29

Likely vacuum line, but search this forum for other ideas it's been covered many many times before.

Sep 16th, 2003, 16:53	#1
chrisk Guest Location:	2-3-2 fault code long term fuel too rich or weak I have a recuring 2-3-2 fault code apprearing on my 850T5 this is I believe a long term fuel mixture proplem??? However what is the likley cause and how to fix it. It seems to happen on the overun when slowing for a roundabout for example. I am runnung on 95RON fuel. Interestingly when I was in france last month using 98RON (only a cent per litre more expensive over there) the fault never occoured over 3000 miles. Anyone any ideas please!

Sep 16th, 2003, 17:02	#2
liuleichan Premier Member Last Online: Apr 17th, 2019 22:01 Join Date: Dec 2001 Location: .	RE: 2-3-2 fault code long term fuel too rich or weak >I have a recuring 2-3-2 fault code apprearing on my 850T5 >this is I believe a long term fuel mixture proplem??? However >what is the likley cause and how to fix it. It seems to happen >on the overun when slowing for a roundabout for example. I am >runnung on 95RON fuel. Interestingly when I was in france last >month using 98RON (only a cent per litre more expensive over >there) the fault never occoured over 3000 miles. Anyone any >ideas please! I am wildly guessing, but could it be related to the knock sensor (affecting the timing), or whatever other sensor(s) regulates the fuel richness in the mix? Lei Chan

Sep 16th, 2003, 17:06	#3
rstrang Junior Member Last Online: Aug 17th, 2007 14:53 Join Date: Dec 2001 Location: Reading	RE: 2-3-2 fault code long term fuel too rich or weak Hi, Have a look here http://www.volvospeed.com/Repair/vacuum_lines.htm Richard

Sep 16th, 2003, 21:04	#4
sholtby Premier Member Last Online: May 26th, 2010 20:17 Join Date: Dec 2002 Location: north east	RE: 2-3-2 fault code long term fuel too rich or weak Yes I had exactly the same problem and the vacume line elbow was split where it connects to the inlet manifold behind the power steering pump. I have made a DIY repair. It is really difficult to get to. Simon

Sep 16th, 2003, 21:29	#5
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	RE: 2-3-2 fault code long term fuel too rich or weak Likely vacuum line, but search this forum for other ideas it's been covered many many times before.

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