P0420 fault code any ideas?

S

Scott m

Member
 Edinburgh
Got p0420 - powertrain cataylist efficiency below threshold (bank 1) fauld code coming up on my 2.0 zed. Any 1 got any ideas what the problem could be? I first thought It might have been the supermarket fuel as the car is running normal. Getting a bit worried now that there is maybe a problem somewhere. Any help would be appreciated :)
 
Thanks for the reply going to get it looked it this weekend. Its just came out of warranty from the garage that I bought it from this month aswell. Hopefully doesnt cost to much to get it sorted.
 
I was having a problem with Sainsburies fuel, light kept coming on :x
Put some Redex in and filled up with Shell and never looked back , no more warning light :thumbsup: I periodicaly put 1/2 a bottle of Redex in when I fill up with fuel.
 
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