Heated oxygen sensor

Jan 7th, 2003, 17:03

Hi Guys
Lambda light came on code reads heated oxygen sensor reading slow.It has reset but has anyone experienced this? Is it possible to check?How much is a new sensor?Easy to change?Cheers in advance
Colin 95 855 T5

Jan 7th, 2003, 19:11

In my patchy knowledge from my RS2000 days the lambda sensors are directly in the manifiold just before the fuel injection and only work when the engine is cold and completley remove themselves from use when the engine's warm. They have something to do with the cat and emissions when cold. So if ur not bothered about the enviroment i may be tempted to leave it. But dont quote me on that.

Peter Milnes · Jan 7th, 2003, 23:27

IIRC they are usually mounted in the front part of the catalyser. An incorrectly reacting O2 sensor usually means that the cat may be destroyed by incorrect fuel/air mix.

All the best, Peter

Jan 15th, 2003, 19:57

Other way around, they work when hot. Early ones weren't heated and took longer to warm up. Modern ones are heated to get them working quiker.

Fuel consumption will suffer if its broken. Modern ECU's rely heavily on the lambda sensor.

Could be time to replace it. www.lambdasensor.com are good. Go for genuine bosch ones.

Jan 7th, 2003, 17:03	#1
Coljono Guest Location:	Heated oxygen sensor Hi Guys Lambda light came on code reads heated oxygen sensor reading slow.It has reset but has anyone experienced this? Is it possible to check?How much is a new sensor?Easy to change?Cheers in advance Colin 95 855 T5

Jan 7th, 2003, 19:11	#2
redestate Guest Location:	RE: Heated oxygen sensor In my patchy knowledge from my RS2000 days the lambda sensors are directly in the manifiold just before the fuel injection and only work when the engine is cold and completley remove themselves from use when the engine's warm. They have something to do with the cat and emissions when cold. So if ur not bothered about the enviroment i may be tempted to leave it. But dont quote me on that.

Jan 7th, 2003, 23:27	#3
Peter Milnes Premier Member Last Online: Apr 10th, 2014 00:01 Join Date: Feb 2002 Location: Tonyrefail	RE: Heated oxygen sensor IIRC they are usually mounted in the front part of the catalyser. An incorrectly reacting O2 sensor usually means that the cat may be destroyed by incorrect fuel/air mix. All the best, Peter

Jan 15th, 2003, 19:57	#4
ChrisB Guest Location:	RE: Heated oxygen sensor Other way around, they work when hot. Early ones weren't heated and took longer to warm up. Modern ones are heated to get them working quiker. Fuel consumption will suffer if its broken. Modern ECU's rely heavily on the lambda sensor. Could be time to replace it. www.lambdasensor.com are good. Go for genuine bosch ones.

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