Generic OBDII "trouble codes" apply to all 1996 and newer vehicles. These trouble codes were designed by vehicle manufacturers to be universal. There are manufacturer specific Digital Trouble codes (DTC) as well. Expert trouble code retrieval tools are required to extract these codes and they are...
DTC, or Diagnostic Trouble Codes, are generated by the car’s on-board diagnostic (OBDII) system when a fault in the system is detected. when a dtc is present, the malfunction indicator lamp (MIL) also known as the Check Engine Light (CEL), will illuminate. you can then use a handheld...
Detailed information on the P0420 dtc trouble code. Includes why it happens and how to fix your car.