Rear Oxygen Sensor - Whats it called, where is it?

mountainmachine · Mar 1st, 2007, 10:37

OK so the engine managment light was on, had the codes read and reset as some were too old, the one they said it would be casuing the light to come on would be the rear oxygen sensor. So he cleared them and said if it came on again to get the rear oxygen sensor change, and its came on today again.

Now i should have got more info at the time... i know NGK make a direct replacment for around £85 (garage price) and Volvo £200 ish, but cant remember the correct name for the part. Assuming its not just rear oxygen sensor.

Can someone tell me what the correct term is, where its located and is it easy to replace? And also some options on where to buy it.

Its a Volvo S40 2.0 T 2002

Thanks

mountainmachine · Mar 1st, 2007, 12:07

Am asuming that the 2002 model will have 2 one in front of the cat one behind the cat? And are they also called lambda sensors by chance, but whats the proper name, ie the one you'd ask for at a parts desk.

CTCNetwork · Mar 1st, 2007, 12:11

Hi,

Oxygen sensors perhaps?
Linky....

Des. . .

qscgyjl · Mar 1st, 2007, 15:11

Just bought a rear O2 sensor from Volvo for our '01 V40 T4, £101 + Vat.

Mike

mountainmachine · Mar 1st, 2007, 16:33

Ok well went and got a quote

NGK1768 Direct Fit Lambda - Volvo OTA4 - £61.97+VAT = £72.81

Not bad, gona wait till i get under the car and check the fitment. But sure that'll be oK.

cootuk · Mar 1st, 2007, 16:35

Get a receipt for some Tesco fuel then put a claim in against them ;-)

PNuT · Mar 1st, 2007, 16:58

erm.... did you get the emissions checked? the rear sensor is designed to throw a light if the catalyst isnt working correctly

Rooster · Mar 1st, 2007, 19:00

Not quiet true, its more of a temp senser than a lamba probe,

It keeps an eye on exhaust gas tempritures to work out if the cats working or not,

mine hasn't got a cat and sensor doesn't put warning light on cos its still reading exhaust gas tempriture

PNuT · Mar 1st, 2007, 19:05

Quote:

Originally Posted by Rooster

Not quiet true, its more of a temp senser than a lamba probe,

It keeps an eye on exhaust gas tempritures to work out if the cats working or not,

mine hasn't got a cat and sensor doesn't put warning light on cos its still reading exhaust gas tempriture

every decat ive heard of using two sensors brings the light on, your models must be different?

Rooster · Mar 1st, 2007, 19:08

I thought when i put decat on or should i say knocked internals out of standard cat it might put light on but it never has

Mar 1st, 2007, 10:37	#1
mountainmachine Volvo s40 2.0 T 2002 Last Online: Oct 26th, 2011 20:09 Join Date: Jun 2006 Location: Ayr nr Glasgow	Rear Oxygen Sensor - Whats it called, where is it? OK so the engine managment light was on, had the codes read and reset as some were too old, the one they said it would be casuing the light to come on would be the rear oxygen sensor. So he cleared them and said if it came on again to get the rear oxygen sensor change, and its came on today again. Now i should have got more info at the time... i know NGK make a direct replacment for around £85 (garage price) and Volvo £200 ish, but cant remember the correct name for the part. Assuming its not just rear oxygen sensor. Can someone tell me what the correct term is, where its located and is it easy to replace? And also some options on where to buy it. Its a Volvo S40 2.0 T 2002 Thanks Last edited by mountainmachine; Mar 1st, 2007 at 11:23.

Mar 1st, 2007, 12:11	#3
CTCNetwork Forum Support Team Join Date: Dec 2004 Location: Liège, Belgium View Photos By: CTCNetwork	Hi, Oxygen sensors perhaps? Linky.... Des. . . __________________ Density:- Not just a measurement ~ It's a whole way of Life.! ! ! I drive a Volvo, Please Don't Get In My Way! OldVolvos4Ever He shows up. People die. He vanishes. People should not be afraid of their governments. "He'll deliver more justice in a weekend than 10 years of your Governments should be afraid of their people... "V" courts & tribunals. Just stay out of his way." "I plan to."

Mar 1st, 2007, 19:00	#8
Rooster Speed freak Last Online: Apr 3rd, 2020 22:04 Join Date: Nov 2003 Location: Yorkshire	Not quiet true, its more of a temp senser than a lamba probe, It keeps an eye on exhaust gas tempritures to work out if the cats working or not, mine hasn't got a cat and sensor doesn't put warning light on cos its still reading exhaust gas tempriture __________________ 04 XC90 D5 --- Big bus 00 pug 306HDi --- Run about 88 pug 309GTi --- Project track car 07 CB600 Hornet --- 2 wheel fun

Mar 1st, 2007, 19:08	#10
Rooster Speed freak Last Online: Apr 3rd, 2020 22:04 Join Date: Nov 2003 Location: Yorkshire	I thought when i put decat on or should i say knocked internals out of standard cat it might put light on but it never has __________________ 04 XC90 D5 --- Big bus 00 pug 306HDi --- Run about 88 pug 309GTi --- Project track car 07 CB600 Hornet --- 2 wheel fun

Mar 1st, 2007, 12:07	#2
mountainmachine Volvo s40 2.0 T 2002 Last Online: Oct 26th, 2011 20:09 Join Date: Jun 2006 Location: Ayr nr Glasgow	Am asuming that the 2002 model will have 2 one in front of the cat one behind the cat? And are they also called lambda sensors by chance, but whats the proper name, ie the one you'd ask for at a parts desk.

Mar 1st, 2007, 15:11	#4
qscgyjl Junior Member Last Online: Mar 31st, 2024 12:53 Join Date: Feb 2007 Location: Staines	Just bought a rear O2 sensor from Volvo for our '01 V40 T4, £101 + Vat. Mike

Mar 1st, 2007, 16:33	#5
mountainmachine Volvo s40 2.0 T 2002 Last Online: Oct 26th, 2011 20:09 Join Date: Jun 2006 Location: Ayr nr Glasgow	Ok well went and got a quote NGK1768 Direct Fit Lambda - Volvo OTA4 - £61.97+VAT = £72.81 Not bad, gona wait till i get under the car and check the fitment. But sure that'll be oK.

Mar 1st, 2007, 16:35	#6
cootuk Premier Member Last Online: Apr 22nd, 2013 20:52 Join Date: Dec 2001 Location: bradford	Get a receipt for some Tesco fuel then put a claim in against them ;-)

Mar 1st, 2007, 16:58	#7
PNuT MaDMaN Last Online: Nov 26th, 2022 18:47 Join Date: Sep 2006 Location: Red Lodge	erm.... did you get the emissions checked? the rear sensor is designed to throw a light if the catalyst isnt working correctly

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