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Home >> Chevrolet >> 2011 >> Impala LS, 3.9 M >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 22 (Engine Controls And Fuel - 3.5L - DTC P0341 Through DTC P2544) >> DTC P0446 >> Conditions for Setting the DTC

Conditions for Setting the DTC

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The FTP sensor is more than -12 inches H2O vacuum for 5 seconds during the 13 minute test.

OR

The FTP is less than -2.5 inches H2O or more than +5 inches H2O for 60 seconds after a cold start ignition ON.