Code read c20let?

[adicamm]

Which wires do you use to code read cavalier c20let turbo in a nova? Thanks

[Martin.p]

Can't remember the colour wire off top of my head.but it's only one wire that you connect to ground. Hth

[Rob H]

The yellow and brown one iirc.

[Al1exx]

What do you do to read the codes? Sorry for the pretty basic question.... Do I need an EML light?

[torquey]

Count the flashes on the dash when ignition/engine on. Look up the flashes on here to tell you what's wrong.

[Al1exx]

And if the wire isn't plumbed in....
My CEL doesn't come on at all and the wiring diagram I looked at for the dash plug doesn't mention the CEL wire.... which colours should I connect up?

[Will F]

The wires will already be there - its the brown yellow you need to earth to get the light to flash - as said. The EML wire to the dash is brown/blue iirc? (there's a wire that will be near the ECU and a wire on the back of your clocks - just join them together!

[Al1exx]

Thanks Will I'll have a look behind my dash and see whats going on - plenty wiring wrong back there!!