CEL 2 codes P0420 P0430

[kacper]

Hi guys I got 2 codes P0420 and p0430

i got this after I welded my manifold and forgot conect o2 sensor after i installed exhaust manifold back .

What does codes mean ? How I could fix that . I have no traction control and living in cold alberta .
There is no egg smell . Car runs great !
I have a tick from driver side manifold

 

[kacper]

up .

Please give me some tips how could I check what causes these CELs . I just spend over $ 1500 on this truck since june and so far i hate it .. people says toyotas are reliable cars lol . manifolds are freaking expensive and the get fault after another 3-4 years . There is some aftermarket headers but also I found many bad opinions about poor quality (bend flanges . wrong dimensions etc)

my truck has 70k miles.

 

[SSt4r]

If you have re connected the sensors, reset the code. If the problem is corrected then you should be fine. The codes shouldn't return if there's no problem.

 

[kacper]

If you have re connected the sensors, reset the code. If the problem is corrected then you should be fine. The codes shouldn't return if there's no problem.

thanks for reply ! Iplugged in o2 sensor right after I've noticed that I forgot to do it but CEL was still active . I'm driving like that long time . Now we got lots of snow here in alberta and I would like to have vsc working .
even when I reset these codes they show up after 2 days .

I haven't got any cel before I welded passenger manifold .

 

[BlackWorksInc]

Did you disconnect the ground wire before welding on the vehicle? Did you remove the O2s an catalysts?

How are you resetting these DTCs and have you replaced the sensors?

 

[kacper]

I removed cat from the car and welded at my buddy shop . Unfortunately I haven't removed o2 sensor while welding so you might be right that something could happened to the o2 sensor . Also after I have installed manifold back I forgot plug in the sensor than i drove about 10 minutes till I got CEL. I get back to my buddy plug in the o2 sensor but cel was still on . before I weld this manifold there was no codes only the ticking noise .

so far my driver side is leaking for sure idk about passenger side cause it's hard to hear . no performance issues . fuel consumption is ok.

I'm really disappointed about my truck put so much money on it and every months getting new problems..


i reset codes by disconnecting battery couple times and today I have used a obd reader to get the codes and reset them

 

[kacper]

Does anyone get set of pacesetter manifolds ? How they working ? I have seen many bad opinions about aftermarket manifolds . they usually not really flat on flange or have wrong dimensions :/