Could this code po449 be caused by not having a tune-up

Question

Code: PO449 can this code be caused by not having a tune up on my vehicle

Answer 1

HI there,

This is an evap emissions code for the vent control valve. This is not tune up related at all, but usually a problem with the vent control valve itself. It's best to start by checking the gas cap. If it's loose it can cause this code to appear.

P0449 CADILLAC - Evaporative Emission Vent Valve Solenoid Malfunction

Read more: https://www.autocodes.com/p0449_cadillac.html