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Old 09-22-2004, 07:49 PM   #1
Scooby Newbie
Member#: 64782
Join Date: Jun 2004
Location: Rochest'a NY
2002 Impreza 2.5RS
Platinum Silver Metalic

Default Bad O2 sensor bad for your car?

Well my O2 sensor has become a CEL, 0031, heater for it is bad, so to replace will cost 140-160 i hear plus labor :P
Is there something else i could replace it with, i hear wide band O2 sensors would work for a air/fuel ratio guage if i wanted one...
Or should i just keep driving with it like that? Will it make a difference, its not in limp mode, just an annoying yellow light on the dash
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Old 09-22-2004, 10:51 PM   #2
Scooby Guru
Member#: 1594
Join Date: Jun 2000
Chapter/Region: MWSOC
Location: Gretna, NE
1995 WRX
2002 Legacy


I have the same issue with a P0037. I'm going to replace mine myself.

There are places online that you should be able to buy the sensor for less than $140.
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Old 09-22-2004, 11:01 PM   #3
Scooby Specialist
Member#: 17548
Join Date: Apr 2002
Location: Atlanta, Ga

Do a search on it. You can go to any major parts store and get a Bosch 4 wire O2 sensor for a 2000 Ford Mustang 4.6L. It was half the price of a Subaru (Denso, I believe) O2 sensor.

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Old 09-23-2004, 08:39 AM   #4
Scooby Newbie
Member#: 62819
Join Date: May 2004
Chapter/Region: MWSOC
Location: Ann Arbor, MI
2002 Outback


I have an '02 OBW with a 2.5. The front O2 for mine was $84 (they had just dropped the price) at the dealership, it was a Bosch. Bosch had a part #, but only sold them to Subaru. They also reflashed my ECU and the more recent program, I heard, takes advantage of wide band sensors. I don't know if the replacement is one.
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