Conditions for Setting the DTC

P0443

• The ECM detects the voltage on the EVAP canister purge valve control circuit is between 2.6-4.6 volts when the driver is commanded OFF.
• The condition exists for 4 seconds or a cumulative of 50 seconds.

P0458

• The ECM detects the voltage on the EVAP canister purge valve control circuit is less than 2.6 volts when the driver is commanded OFF.
• The condition exists for 4 seconds or a cumulative of 50 seconds.

P0459

• The ECM detects the voltage on the EVAP canister purge valve control circuit is greater than 4.6 volts when the driver is commanded ON.
• The condition exists for 4 seconds or a cumulative of 50 seconds.