What does P0420 mean on a Chrysler catalytic converter?
What does P0420 mean on a Chrysler catalytic converter? Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins. P0420 CHRYSLER Tech Notes As the code description implies the P0420 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (is not as efficient as the factory is expecting). What does OBD-II fault code P0420 mean? Share it! What Does OBD-II Fault Code P0420 Mean? OBD-II Code P0420 is defined as a Catalyst System Efficiency Below Threshold Volkswagen , Audi , Dodge and Toyota have extended their...