warning light

[inde_house]

I keep having a warning light flash up. At irregular time.

Green triangle upside y.

What is it

[inde_house]

Generally flashes went not on boost

[stribo]

It's the Lambda light, I'm guessing one of your sensors is on its' way out, or if your lucky, your only sensor is on its' way out. Not sure how many 850's have.

[inde_house]

It seems too occur more when pulling off in 1st In a rush. But nit flooring it.

[stribo]

Might be worth checking the connection going to the lambda sensor then.

[Volvostorm]

Also worth getting your codes read.

[inde_house]

This may be a silly question. Wats the best place to get the codes read in Birmingham

[nobananas]

How old's your 850 ? If it's pre 95 (ish) then you may have the under-bonnet diagnostic unit that you can read the flash codes yourself.

[Nealevo]

Get your codes read at HLM in bromsgrove but it probably is your lamba, my 850 only has 1 pre cat, cheap and cheerful

[volvo850R]

I had this on mine, it started of by flashing every now and again and then it just came on and wouldnt go away. I had the codes reead and it came up as the maf and a fault with the cooling fan, so its not exclusively for the lambda.

It was triggered by coroded wires for the fan which have since been fixed and a dirty maf sensor due to the foam panel filter oil. I had the codes and light cleared and its never come back on again.

[nobananas]

I think it should be treated as an emission control warning. Basically the ECU is reporting that the Lambda sensor is reading incorrectly which means the emissions are not within limits. Any sensor whose operation directly effects fueling (Lambda sensor, MAF sensor, coolant temp sensor etc) could potentially be at fault.

[volvo850R]

yep, after the research i did i can say also its a light for the whole emission control system.

Get it on the diagnostics, otherwise you could end up changing everything and still not get rid of it :D

[volvo850R]

This may be a silly question. Wats the best place to get the codes read in Birmingham


Bloomsbury volvo near wolvo did mine for nothing and cleared the codes. Might be worth the trip if you can get hold of him, he's very busy down there.