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Home >> Chevrolet >> 2009 >> HHR SS, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Controls And Fuel - 2.2L Or 2.4L - DTC P0351 To DTC P2544) >> DTC P0451, P0452, P0453, or P0454 >> Conditions for Setting the DTC >> P0451

Conditions for Setting the DTC: P0451

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This DTC will set if the ECM is unable to re-zero the FTP sensor voltage within a calibrated range during the engine-off small leak test, P0442.