Efficiency below threshold Bank 1. 1/2 and 2/2 on a 2001 Firebird. Can anyone tell me what the 'Mode$10' part means?
2007-08-31 13:13:41 · 3 answers · asked by cartiphilus 4 in Cars & Transportation ➔ Car Makes ➔ Pontiac
I've not seen the "Mode$10" before. The description for code P0420 is "Catalyst system efficiency below threshold, left bank."
You should take it to a GM dealer and see what they can do for you. I took mine in and they replaced both converters free of charge, despite that I didn't buy the car there AND was outside of the 80k warranty. I was very surprised.
2007-09-01 15:32:58 · answer #1 · answered by Otto 3 · 0⤊ 0⤋
Hmmm, never seen any code that displayed anything like that! Where did that code info come from? Parts store? Or do you have a scan tool? May need to try a different device. Every P0420 code I've seen has been a failed cat. converter. I'm pretty sure that the factory warr. on converters is 8/80, so if you are under on mileage you may want to check with the dealer and see if you're covered!
Good luck!
2007-09-01 00:55:13 · answer #2 · answered by Ham_Samich 2 · 0⤊ 0⤋
Basicly you will need to replace the passengers side cat converter. You let your black cat cross your path Mode$10 means you will spend lots of money. Call my friends at Random Technology Dot Com for a set of new higher flowing cat converters and have them welded in. There is a possability your exhaust has a small air leak and depending on how many miles on the car you could also want to replace your O2 sensors with new GM sensors too.
2007-09-01 08:19:56 · answer #3 · answered by John Paul 7 · 0⤊ 0⤋