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Old 12-15-2006, 04:59 PM   #1
BLK REX
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Default CEL: P0133 O2 Sensor Slow Response (Bank 1 Sensor 1)

P0133 o2 Sensor Slow Response (Bank 1 Sensor 1)

2000 Subaru Legacy GT Limited



83333 Miles

Came on while I was doing 80 on the highway. Added gas this morning (about 50 miles prior), the gauge was a little above half when the light came on.

Code was pulled at Advance Auto Parts.

Went home disconnected battery, reconnected, light still on.

Drove for 5 minutes, shut car off for 5 minutes, drove back home, light still on.

Pricing for O2 Sensors at the Auto Parts Store was $150-200!!!

Help?
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Old 12-15-2006, 05:22 PM   #2
badtaste
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i think we charge about 115 at out shop for them
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Old 12-15-2006, 05:24 PM   #3
Kostamojen
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Quote:
Originally Posted by BLK REX View Post
Pricing for O2 Sensors at the Auto Parts Store was $150-200!!!

Help?
I wouldnt recommend one from a generic autoparts store.

But whats your question, or are you just complaining about the price of the sensor?
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Old 12-15-2006, 05:29 PM   #4
BLK REX
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Im asking if there is a way for me to get around replacing the sensor.
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Old 12-15-2006, 08:18 PM   #5
Petersubaru
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That is what I thought until I got one from Importecparts.com $55 for direct bosch fit
Quote:
Originally Posted by BLK REX View Post
Im asking if there is a way for me to get around replacing the sensor.
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Old 12-15-2006, 08:48 PM   #6
BLK REX
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Quote:
Originally Posted by Petersubaru View Post
That is what I thought until I got one from Importecparts.com $55 for direct bosch fit
Thanks for the link..


EDIT: Is this it right here?
http://catalog.eautopartscatalog.com...eccatalog.com/

Part C5010-113986 by Bosch?
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Old 12-16-2006, 12:58 PM   #7
l67cooled
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Quote:
Originally Posted by BLK REX View Post
Im asking if there is a way for me to get around replacing the sensor.

Does anyone make a 02 simulator for our cars. that would take care of your problems. Probably wont get as good of gas milage though.
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Old 12-16-2006, 02:06 PM   #8
swede978
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Try blowing out the sensor with low pressure and cleaning it with some carb cleaner. This helped me for almost a year before I had to replace mine.
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Old 12-16-2006, 03:22 PM   #9
BLK REX
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Which side is Bank 1? Is it the side with Cylinders 1 and 3?
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Old 12-16-2006, 03:40 PM   #10
BLK REX
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Hmm I only found 1 o2 Sensor? Right behind the cat (I think it could even be in the Cat)

EDIT: I went to the store to buy Carb Spray and a Socket, and the light shut itself off..WTF Random

Last edited by BLK REX; 12-16-2006 at 04:16 PM.
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Old 12-16-2006, 04:22 PM   #11
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Quote:
Originally Posted by BLK REX View Post
Which side is Bank 1? Is it the side with Cylinders 1 and 3?
There's only one 'Bank', but there are 2 sensors. Your code O2 Sensor Circuit Slow Response (Bank 1 Sensor 1) is the FRONT sensor, which is the one the ECU uses for closed loop AFR control.

Quote:
Originally Posted by BLK REX View Post
Hmm I only found 1 o2 Sensor? Right behind the cat (I think it could even be in the Cat)
It sounds like you may have found the rear O2 sensor (way back in the exhaust - and only used for emissions monitoring). The one you want is ahead of any cats, right where the LH and RH exhaust manifolds merge.
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Old 12-16-2006, 11:57 PM   #12
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and the light shut itself off..WTF Random
I'm in the same boat... my CEL came on, then went off randomly. Now it's back on and staying on. Same code as yours plus p0420. I can't get my front O2 sensor to budge though... tried everything I can think of short of taking the cat off of the car.
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Old 12-17-2006, 01:35 PM   #13
badtaste
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try an o2 socket?
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Old 12-17-2006, 03:35 PM   #14
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That is your front 02 sensor, BEFORE The cat

the one after the cat is bank1 sensor 2

you need to replace the front oxygen sensor.

You cant just put a similuator in there that sensor is what the ecu uses to calculate air/fuel ratio

when they get old they ''slow'' down.

that legacy only has one ''bank'' because they only use one upstream sensor.
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Old 05-30-2007, 11:12 AM   #15
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12000 miles later it came back on..right as Im getting ready to trade the car in too..
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Old 05-30-2007, 11:30 AM   #16
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Did you replace it with an OEM sensor or something else?
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Old 05-30-2007, 12:05 PM   #17
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I never replaced it in the first place..it just shut off..
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Old 05-30-2007, 03:16 PM   #18
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It decided to just shut itself off..


...is there any connection between this CEL and the gas cap? My (female) friend forgot to put the cap on after refueling and drove it for a minute or so until i realized it..
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Old 05-30-2007, 03:56 PM   #19
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No, that would be an evaporative emissions CEL.
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