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Home › Chevrolet › 2006 › SSR Automatic › Repair and Diagnosis › Engine Performance › System › Engine Control System - 6.0L - DTC P0449 To DTC P1682 › DTC P0449 › Conditions for Running the DTC

Conditions for Running the DTC

The engine speed is more than 400 RPM.
The system voltage is between 6-18 volts.
DTC P0449 runs continuously once the above conditions are met.