P1133 - Ho2S Insuffencet switching

[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

[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]

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.

[banderso]

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

[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/

[banderso]

OK
Code W.

So, change the O2 sensor on bank 1 ?

thoughts?
thanks
bill

[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.

[banderso]

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 !