Confirmation needed ...

[alex]

Bobby in the bath.... Not my idea of a pleasant thought for a Thursday night. Driven me to drink. Watch the rubber duckies.

[Road Hog]

See here

[Alchamist]

Thanks Bernie, but as I said it is a new sensor already, and it hasn't made any difference to the problem - this is why I wanted to check to see if the light should come on when disconnected, as if it should, then I think the problem is in the loom itself - hence why changing the sensor made no difference - if that makes any sense!

[Road Hog]

Ahhhhh sorry missed that one I see your reasoning & cannot fault it

How many wires & what colours have you ??

[Alchamist]

Three, and unknown at the moment - can't see in the dark. Will have a look tomorrow

[Road Hog]

That will be.......

Black ........ reference signal out
Grey ........ Nuetral
White ...... Heater

If you want to test the sensor,take it off car & clamp in a vice,connect a multimeter (set to 0 - 5 volts range)across black + & Grey -,heat the element with a blowlamp as the element caseing comes to red heat it should have a reading approx 1volt,now play the flame off & on the voltage reading should fluctuate accordingly.
If that wiring section works the fault must be deeper in the loom

[Sir-Doris]

Only slightly relevant but on the 2.2 the EML come on when the Lambda sensor is unplugged.

[Frontycustoms]

Jay, diss the plug on the ecu n bell out the cables across each other. If no continuity across any of them then I would go for an ecu fault. Rob Fudsters off his truck n see if it makes any difference maybe. Just a thought, but its how we find shorts in my job.

[Road Hog]

That works on the assumption that the sensors etc are normally closed,unfortunately the Lambda is normally open on a cold engine therefore no continuity is correct.

[Frontycustoms]

But it would test the cables in the loom though Bernie

[Sir-Doris]

Have a look here for Lambda diagnosis: Clicky Linky

[Road Hog]

End to end indeed it would Mark,I read your post as testing across the terminals within the connector must be getting tired off to bed now before I mess up properly

[Frontycustoms]

LOL.....u old ens need ya sleep eh Bernie

[Road Hog]

you young whippersnappers will catch me up one day night night chaps

[meooo]

If your Lamda sensor is reading constantly Lean, I would suggest you have a missfire, causing the sensor to see too rich a fuel mixture and constantly trying to weaken it off (which it cant do due to the missfire)