Check engine light came on on a roadtest
Checked code..p0031
Just wondering are oxygen sensors interchangeable from wrx,gt forester na gen 3?possible bad earth?
my02 oxygen sensor fault
Started by claire6, Apr 24 2015 03:27 PM
15 replies to this topic
#2
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Posted 24 April 2015 - 06:56 PM
I tried & it didn't work. The CEL doesn't go away.
Search in the UK & USA for a new OEM sensor. Much cheaper.
#3
claire6
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Posted 24 April 2015 - 07:19 PM
Hopefully just a bad earth it was fine b4 removing engine..
Where does earth on rh strut tower go to i found it loose.
Where does earth on rh strut tower go to i found it loose.
#4
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Posted 24 April 2015 - 07:20 PM
To the manifold.
It's unrelated to your problem.
Source a new sensor.
#5
claire6
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Posted 24 April 2015 - 08:10 PM
Dam...wasfine b4 removed engine i know wen i was jacking motor up on crane it did come close to chassis rail maybe i ppinched a wire on sensor..
#6
RX25SE
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Posted 24 April 2015 - 10:32 PM
Check engine light came on on a roadtest
Checked code..p0031
Just wondering are oxygen sensors interchangeable from wrx,gt forester na gen 3?possible bad earth?
I may be an earth (not sensor earth) problem as this code is related to the sensors internal heater.
It may also be a power supply issue to the heater, or the sensors heater circuit itself.
If I told you I was a compulsive liar, would you believe me?
#8
RX25SE
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Posted 24 April 2015 - 10:36 PM
...or the sensor is forked. 
If I told you I was a compulsive liar, would you believe me?
#9
natho
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Posted 25 April 2015 - 05:02 PM
you can use o2 sensors for the GD wrx on the b4. the wiring is a bit longer for the rear sensor, which you can sort out with some cable ties. i ordered these for my b4 a while ago from the US where they are much cheaper:
DENSO 234-9011 - Front Oxygen Sensor Subaru WRX 2002-2005
DENSO 234-4732 - Rear Oxygen Sensor Subaru WRX 2002-2005
There are Bosch equivalents available and they are sometimes cheaper. They are probably fine but i've never used them. I wouldn't buy a cheaper replacement either, i've had bad luck with no-name brand o2 sensors.
#11
claire6
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Posted 29 April 2015 - 06:58 PM
Anyone know bosch part no?
Was told gt forester uses same sensor can anyone confirm please?
Was told gt forester uses same sensor can anyone confirm please?
#12
cowie165
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Posted 30 April 2015 - 08:44 PM
For anyone searching this thread later on, the JDM EJ20TT uses the same 3-wire O2 sensor as the GC8 (which is different to the AUDM EJ20). GC8 sensor is plug and play.
"Installation is the reverse of the removal procedure."
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#13
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Posted 01 May 2015 - 09:52 AM
Front 4 wire O2/AFR sensor OEM part number 22641AA090 Bosch part number 0258003842
We are talking about a rev D aren't we?
#14
claire6
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Posted 01 May 2015 - 03:57 PM
Yes rev d..
Much appreciated.
Been told a few fit but others say they dont.
Thanks for clearing up.
Can get one genuine but ex japan..
Much appreciated.
Been told a few fit but others say they dont.
Thanks for clearing up.
Can get one genuine but ex japan..
#15
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Posted 01 May 2015 - 08:18 PM
I never had any issues with eBay spec cheap sensors from the UK and USA as long as they were Legacy specific sensors.
There was a sensor I tried with the same part no as ours, but was for a WRX so it had a different plug & I had to splice my old plug onto it, but it worked fine.
There was a sensor I tried with the same part no as ours, but was for a WRX so it had a different plug & I had to splice my old plug onto it, but it worked fine.
#16
claire6
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Posted 01 May 2015 - 10:14 PM
Yeh looking at getting one off ebay $144 same part no.as denso..
Bursons want $700..
Was just trying to source 2nd hand one till genuine item came but mit just buy ebay one and be done with it.
Just want to get b4 on the road..
Bursons want $700..
Was just trying to source 2nd hand one till genuine item came but mit just buy ebay one and be done with it.
Just want to get b4 on the road..
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