Hey guys. I've got a code for sensor 1 bank 1. I've replaced the sensor twice and still get the code. I've heard this can also mean I've got a vacuum leak somewhere. Could you tell me which (if not all) vacuum lines would cause this? Or which lines would be a more probable cause for the code? I basically just need some help starting in the right direction.

Thanks,
Steve

 

whats the code?

 

P1133

Also, I've had trouble with my HVAC freezing (not blowing any air, hot or cold) once the temp drops below 32*. Not sure if it's related or not.

 

yea sounds like an vac related Id start by the distributor and follow all the vac lines till you find the issue.

Edit: also this should help you
P1133 - HO2S Insufficient Switching Bank 1 Sensor 1

 

Thanks man. We'll see how it goes, I guess.

 

NP your best bet is start checking your vac lines 1st by the distributor cap and then go on from there.

 

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