P0420 Dodge -

Question

Code po420 comes I'd like to know where to start an can this code make your car to loose power not sure if I should replace the cat or replace o2. Sensor?????

Answer 1

P0420 Catalytic below threshold Bank 1

A P0420 can cause your vehicle to loose power only if the catalytic has plugged up.You can remove the front 02 sensor and test drive the vehicle but you must have the 02 sensor connected and placed in a safe area. If the performance improves you will need a catalytic.