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...
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...
1. Clearing the code and checking if it comes back: 2. Comparing the signals from the pre-cat air/fuel ratio (Front O2) sensor to the post-cat rear O2 sensor. 3. Checking the catalytic converter temperatures with the infrared thermometer. ...