How long can i drive with the service engine soon light on for the p0021 code?

Question

I had a slight loss of power but turned car off and waited an hour or two then it drove home fine. I drove it to auto zone the next day to get a diagnostic and the P0420 and p0021 codes appeared I'm just wondering how urgent it is and what the repairs may be?

Answer 1

P0021 Intake valve timing control solenoid valve

P0420 Catalyst below threshold Bank 1

Having a timing control code the engine goes into a fail safe operating mode, When the CK ENG LT is comes on and the component involved is a solenoid, left the way it is not only do you have limited operation but you can burn out the ITV solenoid driver in the ECM. As for P0420 your the length of time depends on your emission test for the registration.