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Home › Cadillac › 2005 › XLR › Repair and Diagnosis › Engine Performance › System › Engine Controls (DTC P0341 To P0629) › DTC P0451 › Conditions for Setting the DTC

Conditions for Setting the DTC

The FTP varies more than 0.37 mm Hg (0.2 inches H2O) for 5 seconds at idle.
OR
The FTP varies less than 0.02 volts for 5 seconds while driving.