故障码:P0420 解释:这个故障码表示催化转换器系统的效能未达到预定的标准阈值,特别是在车辆的第一排(即发动机一侧)表现不佳。 英文解释:The code P0420 indicates that the Catalyst System Efficiency is Below the Acceptable Threshold for Bank 1. 所属领域:此故障码关联到车辆的排放控制系统。 细节分析:催化转...
i have replaced the 2 02 sensors but i am still getting the same code, p0420. i guess the CAT has give up. DO YOU THINK I AM CORRECT ? #5 - neil - 06/14/2009 - 09:54P0420 bank 2 I have an 03 trailblazer- scan says bank 2. Does that make the code more specific for my...
It just runs the engine lean for so many seconds to bank up some oxygen in the cat, and then rich for so many seconds to see how long the cat can still do its job. The ones that can't make the grade set the code. Interesting, is there a list of approved, or better yet, ...