Ecu fault codes

martyn · Post by **martyn** » Sat Aug 12, 2006 1:56 pm

I have an intermitant cold start problem which luckily hasn't yet left me stranded

but before it does

has anybody managed to succesfully read the ecu's fault codes and put them to good use. I've seen code readers in Halfords and on Ebay but I seem to remember reading somewhere that they don't work with the Bx and none of the local garages I've asked can help (...too old

)

Martyn

AlanS · Post by **AlanS** » Sat Aug 12, 2006 3:54 pm

This is how you do it:

http://www.aussiefrogs.com/forum/showthread.php?t=13369

This is the codes:

http://www.vectorbd.com/peugeot/files/405ecu.pdf

This all relates to the 8V versions, but IIRC, it is also applicable to the 16V, if not, let me know and I can try and dig them up for you.

Alan S

martyn · Post by **martyn** » Sat Aug 12, 2006 6:57 pm

Many many thanks Alan for a brilliant link, sounds far too easy to be Citroen though

but I'll have my wire ready & waiting for its next tantrum

Martyn

martyn · Post by **martyn** » Wed Aug 16, 2006 6:42 pm

Alan, just had a thought, would there be any damage done to the ecu if I grounded the wrong pin

, I ask as I'm not 100% sure if I understand the aussiefrogs poster when he states " keep notch to the top " are the TZi and 16v plugs the same ?

Martyn

Anonymous · Post by **Anonymous** » Wed Aug 16, 2006 7:48 pm

I think it's the same plug on all motronic psa engines. I did the self diagnosis procedure at my AX GTi many times with the procedures described in the aussiefrogs.

AlanS · Post by **AlanS** » Wed Aug 16, 2006 8:34 pm

I think Christoa has answered that one.
I haven't personally had cause to do one but know quite a few who have and they all reckon it's easy and accurate.

Alan S

Anonymous · Post by **Anonymous** » Thu Aug 17, 2006 4:51 am

I have built a fault code reader myself, ill have a look and see if i can draw an easy schematic of it.
I have all codes too, but not in english

ed_straker · Post by **ed_straker** » Thu Aug 17, 2006 7:06 am

As always:
http://www.tramontana.co.hu/citroen/fuel/test.php

bottom of the page!

martyn · Post by **martyn** » Thu Aug 17, 2006 5:18 pm

had a good look at the plug tonight, with my close up specs this time

and the pins are marked 1 & 2

so I'll get poking tomorrow.

Martyn

martyn · Post by **martyn** » Fri Nov 17, 2006 10:39 pm

Just a follow up to my original post about an intermittant starting problem.
Shortly after, it happened again, so I did the usual quick checks, no joy, then I started to make and break all the accessable connectors then I found one over the gearbox that I'd never noticed before, did that one and eversince I've had no problem

I think it could have been the CAS plug does that sound about right

AlanS · Post by **AlanS** » Fri Nov 17, 2006 11:12 pm

Quite possibly I'd say it would be as the CAS is in that region.

Alan S

thanuttiscotsman · Post by **thanuttiscotsman** » Sat Nov 18, 2006 8:14 am

AlanS wrote:Quite possibly I'd say it would be as the CAS is in that region.

Alan S

hi there,
whats the cas? my starter was good in the xantia 1.8 16v but has always been a bit lazy in the 16v.! never turned over as quick even with full bettery.

rossco

Post by **Toddman** » Sat Nov 18, 2006 11:54 am

It is the TDC sensor which read from the flywheel ring gear.
The sensor itself is located under the HP pump iron plate and you should notice theh black screened cable running off under there.

Cheers
Luke

thanuttiscotsman · Post by **thanuttiscotsman** » Sat Nov 18, 2006 12:49 pm

hi luke,
cheers now i know what they mean. just different terminology

i have already had a go at removing it when my car wouldnt start before but gave up cos citroen had given me a xantia diesel one anyhow

cheers rossco

martyn · Post by **martyn** » Sat Nov 18, 2006 1:25 pm

Hi Rossco, for future ref. CAS = Crank Angle Sensor

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