I replaced my o2 sensor today and now i have 2 codes on. there P0030 and P0134??? What is going on???? Help yall

 

which o2 sensor did you replace?

 

P0030 HO2S Heater Control Circuit (Bank 1 Sensor 1) P0134 02 Sensor Circuit No Activity Detected (Bank I Sensor 1) This may be a dumb question put did you plug it in incorrectly if the plug looks fine no messed up pins you may check youre fuses

 

the upstream o2 sensor i replaced.


Yes i check it all out. but i bought the bosch o2 sensor. idk if thats bad or if i should return it and buy from the dealer

 

did it have the plug on it or did you have to put it on

 

Plug was already on it i paid 138 for it from advanced auto

 

you got ripped the **** off.

i just bought one from gmpd for 50

 

I would check and make shure fuses first being the easiest. Then make shure its making contact at the plug as it should and also check and see if it came with a wiring diagram and make shure the correct wires are going where there supposed to . If all that checks out bring it back to advanced but it should work just aswell as the factory one .

 

Did you replace it because you had these codes in the first place?

 

lol i work at advance one is 130 and i just bought one from gm for 71

 

Since you are not on-line as of this posting, the factory manual states that after you replace either HO2S you must perform a code clear with a scan tool regardless of whether or not a DTC is set. This is done to reset the HO2S resistance learned value and avoid possible HO2S faillure (warings and cautions page 0-7)

 

i bought the one that hooks right up without having to deal with cutting the wires and stuff

I replaced it because i had a CEL on that said it was no good. i think it was P0104 but i cant remember.

 

P0104 Mass or Volume Air Flow Circuit Intermittent i dont think that was the code lol but anywho any luck on tracing the problem

 

check your EMS or EXH fuse under the hood. it's a 10amp fuse. Could be popped. I'm almost sure this will fix the problem.

 

Yall know something.
I just took out the sensor i bought from advance auto and the damn thing was black as FFFFF after one day.
But the old one thats no good was clean of that black ****. i took it back out after driving it all day and it was stick clean.

Yall think its the shitty advance one? It was a bosch sensor lol. So i returned it and bought one from gm and hopefully this will fixed all my problems..... I check the fuse yall are talking about and its still good.

 

Lol Never Buy That Bosch **** I Bought One For Bank 2 And I Threw More Codes Than My Stock One Did And It Was Cut In Half. The Gm One Will Work For You I Had To Buy An Ac Delco One Off Here Used And It Works Great.

 

dam i'm glad you did this thread now i know what to do ,i was haveing the same thing happening to me.

 

so i bought an acdelco one for my upstream as well and my cel is back on too lol

 

I bought the gm one yesterday put it in and unpluged my battery for 10 minutes and drove around for alittle while and the codes back up again. dont know what to do

 

if you said that fuse i told you to check is good then i'm at a loss... no idea...

 

I dont know whats going on man with yours and mine and whoever else is having the same problem



I have no idea what to dooooo

 

I dont know whats going on man with yours and mine and whoever else is having the same problem



I have no idea what to dooooo

Is the fuse under the hood or is it in the car or on the floor on the passenger side?

 

actualy mine came on for the rear p0420, i usd the antifowler and it worked for about a week then went away

 

I checked that fuse you were talking about and its still good. i took it out and turned it around and see if that might have fixed the problem. but idk

 

That won't make a difference