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Home >> GMC >> 2020 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Controls And Fuel - 1.5L (LYX) - Diagnostic Information And Procedures (2 Of 2)) >> 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 within 0.25 s.

P0498 

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

P0499 

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

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