Conditions for Setting the DTC: P0451
WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
- The ECM detects that the FTP is less than -26.2 mm/Hg (-14.1 in. H2O) or greater than 10.6 mm/Hg (5.7 in. H2O) for 11 seconds.
OR
- The ECM detects a change in the zero point of FTP sensor signal greater than +/-5.10 mm/Hg (+/-2.73 in. H2O) from the zero point at start up for 8 seconds.