P1133 - Ho2S Insuffencet switching

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Topic author
banderso
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P1133 - Ho2S Insuffencet switching

Post by banderso »

HI
I did a search, but did not find this code..

P1133

I had a "pop" and misfire. Van ran ratty.
Shut it off and when restarted, the van ran fine.
But, check engine light was on...

Used a tool and got this code.

P1133 - Heated O2 Sensor, circuit insufficent activity, bank 1, sensor 1

1.Is this the O2 sensor on the drivers side?
2. I should replace it?

thanks
bill
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MountainManJoe
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Re: P1133 - Ho2S Insuffencet switching

Post by MountainManJoe »

Give this article a try.
http://www.engine-light-help.com/oxygen ... codes.html

Bank 1 is on the same side as cylinder 1. Sensor 1 is usually before the cat.

LiftedAWDAstro
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Re: P1133 - Ho2S Insuffencet switching

Post by LiftedAWDAstro »

We need more info like year and engine code in your van.

I would check the wiring to that sensor first. Then try to remove it and see if it is carbon'd up. See if that works first. Bank 1 Sensor1 is definitely driver side first one from the engine.
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Topic author
banderso
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Re: P1133 - Ho2S Insuffencet switching

Post by banderso »

LiftedAWDAstro wrote:We need more info like year and engine code in your van.

I would check the wiring to that sensor first. Then try to remove it and see if it is carbon'd up. See if that works first. Bank 1 Sensor1 is definitely driver side first one from the engine.

HI

1999

Where is the engine code?

Thanks !!!

bill
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MountainManJoe
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Re: P1133 - Ho2S Insuffencet switching

Post by MountainManJoe »

It'll be the 8th character in your Vehicle Identification Number (VIN) which you can see on the outside of your windshield (among various other places)

http://service.gm.com/dealerworld/vincards/
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vincard992.png

Topic author
banderso
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Re: P1133 - Ho2S Insuffencet switching

Post by banderso »

OK
Code W.

So, change the O2 sensor on bank 1 ?

thoughts?
thanks
bill
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v8famvan
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Re: P1133 - Ho2S Insuffencet switching

Post by v8famvan »

Typically when you get a code P1135 the sensor has degraded in its ability to properly switch thru the range the diagnostic expects it to go thru. So yes, replacement of the left front O2 sensor is recommended.
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Topic author
banderso
I am merely driving my van
I am merely driving my van
Posts: 6
Joined: Mon Oct 10, 2011 5:08 pm

Re: P1133 - Ho2S Insuffencet switching

Post by banderso »

v8famvan wrote:Typically when you get a code P1135 the sensor has degraded in its ability to properly switch thru the range the diagnostic expects it to go thru. So yes, replacement of the left front O2 sensor is recommended.

Thank you Sir !
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