回複：我的車是連前麵的管子帶CONVERTER

Try to reset the code, drive the car for a while and see if the trouble code would come back

Did you check to see if there are any recalls on Catalyst converter ghost code issue for your model? If so, you might head to the dealer to fix it.

P0420有可能是ghost code（it points the issue at catalyst converter, but it could be O2 sensors), 很難查到是哪個O2 sensor出問題，你可以先換一個，不行再換另外的一個. 有時嫌麻煩，隻好咬咬牙把catalyst converter前後O2 sensors給換了(I did the same thing for one of my 小老婆s a couple years ago in order to clear the code. I ended up replacing 4 o2 sensors, and California-spec catalyst converter. big bucks!)。十年的小老婆，O2 sensors也差不多了.

As the other pointed out, the catalyst converter is expensive. The part could cost up to $1k. Are you sure that you were getting the good quality part?

所有跟帖： 

• "part could cost up to $1k" -majia01- ♀ (390 bytes) () 09/09/2010 postreply 13:35:34

• 回複："part could cost up to $1k" -鐵華- ♂ (638 bytes) () 09/09/2010 postreply 14:16:11

• 我今天上午去找他了 -majia01- ♀ (217 bytes) () 09/09/2010 postreply 14:45:43