P0420
#1
P0420
I keep getting a P0420 - Powertrain Catalyst system efficiency below threshold (bank 1)
I'm pretty sure I have a leak at my flange gasket (manifold to intermediate pipe)
Would this cause this code?
I'm pretty sure I have a leak at my flange gasket (manifold to intermediate pipe)
Would this cause this code?
#2
Not smoking enough doobies ... is it still the original cat?
#3
I believe it is
#4
From the above, I could say the reason for a blown gasket I guess... A clogged cat?
..more seriously, the CAT code is thrown on comparison O2 sensors before/after cat. Not much place for an error... I mean You could try fixing the gasket and clearing the code, but more likely the cat is over.
..more seriously, the CAT code is thrown on comparison O2 sensors before/after cat. Not much place for an error... I mean You could try fixing the gasket and clearing the code, but more likely the cat is over.
#5
Was hoping to avoid the $250 cat.
Well, I'll change the donuts, re-set the code and see if it pops again.
Thanks guys
Well, I'll change the donuts, re-set the code and see if it pops again.
Thanks guys
#6
You can try gambling with the cheap ones, I lucked out with mine. But christine had a nightmare with hers.
#7
#8
From the above, I could say the reason for a blown gasket I guess... A clogged cat?
..more seriously, the CAT code is thrown on comparison O2 sensors before/after cat. Not much place for an error... I mean You could try fixing the gasket and clearing the code, but more likely the cat is over.
..more seriously, the CAT code is thrown on comparison O2 sensors before/after cat. Not much place for an error... I mean You could try fixing the gasket and clearing the code, but more likely the cat is over.
I replaced the donut and re-set the code, I'll see if it pops the code again, if so then I'll replace the cat
#9
So I swapped out the donuts and the code popped again.
Ran the smog check and it says that the catalytic converter passed but the evap didn't.
I'm posting pics of the results, any ideas would be nice, I will replace the cat system, both front and rear if I have to, but I would like to know if I can avoid it.
Ran the smog check and it says that the catalytic converter passed but the evap didn't.
I'm posting pics of the results, any ideas would be nice, I will replace the cat system, both front and rear if I have to, but I would like to know if I can avoid it.
#10
any ideas?