Lambda Sensor

27 August 2008, 16:35

Got CEL on again today, was originally diagnosed as O2 Sensor, we tried a reset and light stayed off for a week. So time to replace the sensor I think. Anyone know if I will have a 3 wire or a 4 wire sensor as Ive come across this site.
Lambda Sensors - Cats Direct and not sure which to try.

Thanks

Chris

PS Car is a 2001 WRX

27 August 2008, 17:26

Let me know what you find out. I am in the process of trying to find a Oxygen sensor for a Y Fozzie. Only finding conflicting info the web re appropriate part numbers and if a universal lambda is available for and EJ205 engine.

ubdai

27 August 2008, 18:46

Just checked under the car mines a four wire.
Gonna try a universal one.

Ubdai sorry aint got a clue for your forester

27 August 2008, 19:07

universal ones are available,got one last year from ebay november i think,half the price of the subaru unit,some fok have them break quick,mines fine so far

27 August 2008, 19:13

just done some more reading on here and seen it mentioned a few times that only genuine ones work on newage cars??
Can anyone confirm that they have used a 4 wire universal o2 sensor on a newage? (the one in the headers). And did it work?

27 August 2008, 19:37

Hi Chris,

is it a sensor failure or is it just whinging 'cos you've a non-standard (de-catted ?) exhaust ?

Just asking as mine used to throw a CEL, but stopped after the re-map.

Sorry if off track, but I thought I'd ask....

DunxC

27 August 2008, 20:03

Not sure to be honest. When Chy at penine subaru read the code he said the sensor was reading correctly, and to try a reset and see how it goes.

He did recommend a new one if it flashed up again though. If a Universal one isnt suitable I may have to bite the bullet and fork out dealer prices

Gonna check all the wiring etc tomorrow, hopefully something simple like a damaged wire

27 August 2008, 21:01

I've just been thru all this stuff recently and ended up getting one from Jap Performance Parts : Home. It's a genuine Subaru part from a wrecked car and was £75. Part No: 22641AA042
It's 4 wire and as said before the universal ones appear not to work with Newage ECU.
Camskill also do one for £150 - Denso one.
SUBARU IMPREZA TURBO PARTS Lambda Oxygen Sensor - 2002 Impreza 2002 Impreza Onwards : £149.00 : Subaru Impreza Turbo Parts, Tuning, Spares & Accessories : Engine - Misc -

Hope this helps! My error code was P0031 iirc and the light went off as soon as the replacement one was plugged in.

27 August 2008, 22:28

Quote:

Originally Posted by pmacFTO

I've just been thru all this stuff recently and ended up getting one from Jap Performance Parts : Home. It's a genuine Subaru part from a wrecked car and was £75. Part No: 22641AA042
It's 4 wire and as said before the universal ones appear not to work with Newage ECU.
Camskill also do one for £150 - Denso one.
SUBARU IMPREZA TURBO PARTS Lambda Oxygen Sensor - 2002 Impreza 2002 Impreza Onwards : £149.00 : Subaru Impreza Turbo Parts, Tuning, Spares & Accessories : Engine - Misc -

Hope this helps! My error code was P0031 iirc and the light went off as soon as the replacement one was plugged in.

Thanks alot mate thats a great help, was hoping to avoid the rip off dealer prices.

So if I read it correctly you didnt require your ecu resetting afterwards?

Thanks again

27 August 2008, 23:32

nope - light went off as soon as we started the car up...it had been coming on then going off again regularly but then eventually stayed on permanently - I think it does 3 cycles of starting up, driving turning off as a diagnostic then if the error still exists it stays on all the time.

The code seemed to clear itself but will still be recorded in the ECU as a historical error - I believe that can be cleared too but since the car is running fine (and less rich!) I am not too worried

27 August 2008, 23:40

Chris.. Just for info could you post the CEL code you have

Is it P0420 or P0031 as I'm a bit confused.

Shaun

27 August 2008, 23:52

didnt want to jump on someone elses post but has anyone ever had blue sludge in the coolant overflow im pretty sure its rusty pipes or something i dont think it is hg cause levels fine no coolant in oil, no exhaust smoke or fumes please help. i.e my pipes are vety rusty and the old owner didnt drive it much could this be corrosion in the pipes. sorry for jumping on this thread.

28 August 2008, 00:06

Quote:

Originally Posted by Midlife......

Chris.. Just for info could you post the CEL code you have

Is it P0420 or P0031 as I'm a bit confused.

Shaun

Not sure on the exact code but it was one of the codes relating to O2 sensor Bank 1 Sensor 1.

Definately wasnt P0420 which i believe is Catalyst Efficiency??

28 August 2008, 00:14

anybody?

28 August 2008, 09:39

Have found an Italian company that manufactures various car parts and they seem to have the near identical part i require.

http://www.facet.it/db_comp/catalogo/catalogo.asp

Did a search using subaru part number 22690AA501 and came back with 10.7805 as the replacement.

Will try to find a retailer here in the UK. Just to compare prices for the oxygen sensor that i require.

ubdai

28 August 2008, 14:36

chris
would a remap sort it out, mine did the same when I changed the exhaust system

28 August 2008, 14:43

Not sure but Ill soon find out, got a 2nd hand lambda sensor on its way to me, if that doesnt cure it then I may have to push the remap further up my list of things to do