Originally Posted by Simphead
This is a bogus site. People don't really respond to posts, so don't even write one. What a waste of time and energy.
I researched on my own. Since the scanner said that the p0420 was triggered by the 2135 code. It is safe to assume that the cat convertor is good. Mine was of normal color and the substrate is intact. The only thing I was worried about was the possibility that is could be wiring or the actual accelerator pedal assembly.
The mechanic at Suzuki was kind enough to give me this info. ($20) Take a look under the hood at the throttle body. At the front of the t-body there should be a blue or green dot to show that the t-body was already replaced/updated. If there is no dot. Buy one. I got a discounted price of $315, plus a gasket and add tax. I installed the new t-body. Then I removed the battery cable, stepped on the brake and turned on the head lights with the battery disconnected. This erases all trans shift memory and t-body tp position memory. Reconnected the battery and road tested. The trans shifted weird for a while. After it learned it's new strategy. It went through it's tests and now passes the emissions test. Thanks to no one on this web site. They do have every emoticon under the sun though. Hope this helps.
I thought the code was for either the catalytic converter or oxygen sensor. Did you replace the oxygen sensor? If not, what did you do to fix the problem for the P0420 code?
I have the same code, although I also have the codes 700 and 705.
Would you happen to have the part number for the T-body?