P0446 Cadillac -

Question

2003 Cadillac CTS will this code produce damage to the car and what should I check first to repair the problem

Answer 1

P0446 Evaporative emission vent control valve circuit malfunction

This code will not produce any damage to the vehicle, The purpose for the CK ENG LT is to inform the driver that its emission exceeds a limit. There are 2 probable causes for this code one is the EVAP vent control valve and the other is the FTP (fuel tank pressure ) sensor not reporting the fuel tank pressure true condition.