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Home >> Chevrolet >> 2018 >> Impala Premier, Gas >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Controls And Fuel - 2.5L (LCV) - Diagnostic Information And Procedures (P0340-P2635) And Symptoms) >> Diagnostic Information and Procedures >> DTC P0449, P0498, or P0499 >> Conditions for Setting the DTC

Conditions for Setting the DTC

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P0449 

The ECM detects the EVAP Vent Solenoid Valve control circuit is open for greater than 0.25 s.

P0498 

The ECM detects the EVAP Vent Solenoid Valve control circuit is shorted to ground for greater than 0.25 s.

P0499 

The ECM detects the EVAP Vent Solenoid Valve control circuit is shorted to voltage for greater than 0.25 s.

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