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Home >> Pontiac >> 2008 >> Torrent GXP, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Controls And Fuel - 3.4L - DTC P0401 To DTC P2544) >> DTC P0451, P0452, P0453, or P0454 >> Circuit/System Verification >> P0451 and P0454

P0451 and P0454

WARNING: This page is about a different variant/trim than selected.
  1. If DTCs P0452, P0453, or P0641 are set, repair those first.
  2. With a scan tool, command the EVAP canister vent solenoid valve closed.
  3. Command the purge solenoid to 30 percent.
  4. Observe the FTP sensor voltage parameter as the vacuum increased to the abort limit.
  5. The voltage should scale smoothly.
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