P0420 - Catalyst Efficiency Below Threshold Bank 1

raygondebruin

New member
Hello my fellow Fanatics.

I recently got the following code on my OBD Scanner, P0420.
What i would like to know is would a decat work to rectify this, or is there underlying problems that i am not aware of and will the decat give me any joy in the future.

Car drives very, very hard, when driving on steep hills or inclines, power drops and the Hyundai I10's come flying past. Not use to those kind of thing.

Car is a 2004 318i N46.

Any feedback on this error would be greatly appreciated.


Raygon
p0420_3094522971.png
 

raygondebruin

New member
GoCart said:
Dump the cats regardless.

What's the millage?

hi there.

mileage is 178,000. I had the CATS dropped, but now the real problem is showing, Valve Stem Seals gone on the car, smokes more than I do. LOL.

Know of any good mech that can help with this? I'm in the East Rand area.

Thank you.

Raygon
 

husaindindar

///Member
raygondebruin said:
GoCart said:
Dump the cats regardless.

What's the millage?

hi there.

mileage is 178,000. I had the CATS dropped, but now the real problem is showing, Valve Stem Seals gone on the car, smokes more than I do. LOL.

Know of any good mech that can help with this? I'm in the East Rand area.

Thank you.

Raygon

IMO.

If I were you, I'd drive down (actually up) to John Lodder. Have them do a good job on it. I know it's a little far from EastRand, but he can hook you up good service and prices.
 
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