406 v6 XFZ ECU not working

[gilboharvo]

Hi guys,
Long time lurker, first time poster from down-under. Thank you all for the wealth of information so far!

My car won't start It appears my ECU has failed as I can no longer communicate with it via pp2000. I've been told that I need to replace the ECU for a ridiculous price but I'm hoping to save some money by locating one myself.

Is this just a matter of buying an old ecu and plugging it in? I've read that I might need a matching ECU/BSI/key set but most sellers in the UK are selling ONLY the ECU.

The ECU number is a XFZ Bosch MP7.0 9625552680
It's a 1999 406 v6 Manual D8

Thanks in advance!!

Gil

[Doggy]

HI Gil & welcome aboard.

Usual practice as far as I know is to buy the set - ecu/bsi/key(s). I've had a quick look and haven't found anything suitable offered for sale in the UK, but there is one advert for someone selling a complete 1999 3.0 coupe for parts - maybe this would work?
https://www.ebay.co.uk/itm/1998-Peugeot ... d2be169a6f

If you haven't already done so, check out the coupe forum as the 3.0 engine was more common in those vehicles and potentially more have survived.
http://www.406coupeclub.org/

Also 406 & coupe Facebook groups

Best of luck with your search

[gilboharvo]

Thanks for your quick reply. Glad to be on board!

I should have mentioned my 406 is actually saloon SV. Does that change anything? Can a kit from a 406 coupe still work?

Gil

[GingerMagic]

Hi, welcome.
There is a fuse for the obd port - worth a check...

And the ECU should be the same, the only real differences are in the BSI menu regarding window dropping, auto close windows etc - easily rectified with PP2K.

[gilboharvo]

Thanks Ginger, some good advice there.

I was able to connect to the BSI and other components but not the ECU. That rules out the BSI fuse then?

Gil

[Doggy]

Probably, but not for certain. The engine ecu uses a different data connection to the other devices, (the 'K' line I believe) so its possibly also a different fuse. Fuseboard layouts vary so it's definitely worth thoroughly checking every 10A fuse in the engine bay fusebox, or all the small fuses for that matter.

May be a long shot but could save you money/embarrassment like 'someone I know'