Morning all, my EML light has just come on and stayed on.
I've done the pedal trick and if im reading the flashes right, these are the codes.

0420
0704
0110

i,ve checked the list but im unsure where to start.

Any advice?

Mark

P0420 Catalyst System Efficiency Below Threshold (Bank 1)
P0704 Clutch Switch Input Circuit Malfunction
P0110 Intake Air Temperature Circuit High Input
P0110 Intake Air Temperature Circuit Low Input

the 420, the standard cat efficieny message most 3.2's get, and some 2.6's, needs a reader to reset, will likely reappear, better fuel may help.  relocating the lambdas is the best fix.

704 Check the clutch switch at the top of the pedal

110, check the connectors just down stream of the airbox, disconnect, clean, reconnect and see how it goes  :y

Thanks Jimbob, Just had the cambelt done by Daz on thursday so may be a dirty/loose connection on the airbox and the clutch switch has been clicking for a bit but i've never had the Lambda issues before  :-/

I'll try to sort out the easy 2 first before i have to get mucky :)

Mark :y

tomoco wrote on 15. Jan 2011 at 09:47:

Morning all, my EML light has just come on and stayed on. I've done the pedal trick and if im reading the flashes right, these are the codes. 0420 0704 0110 i,ve checked the list but im unsure where to start. Any advice? Mark

Hi Mark,

The link below maybe of some help to you.

http://www.omegaowners.com/forum/YaBB.pl?num=1253462747

I've got the same problem with this code showing on mine.  It's the precat's on way out, but the conversion cures the dreaded 0420/0430 problem rearing its ugly head again  :y

thanks gooseman, interesting reading. just been tinkering around and found out the breather box is not sitting flat on the plenum (by quite a bit). its letting air into the center hole in the top of the plenum. im gonna re-seat it tomorrow then see how it goes. it may have been giving all sorts of wrong info to the ECU hence the codes/EML light

Mark