P0443 - Chevy Malibu

Question

Replaced purge valve twice , cleared the code both times. Check engine light is still on.Also used scanner to do a vacuum check on system,and replaced gas cap

Answer 1

Hi there,

Check the fuel tank pressure sensor. You should be able to watch it when you put a vacuum on the system and see the voltage change. If it doesn't change, then the sensor is no good and will need to be replaced.