Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.

Ignition ON.
Verify DTC P0449 is not set.
- If the DTC is set
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- If the DTC is not set
Ignition OFF, remove the fuel tank filler cap. Ignition ON.
Verify the scan tool Fuel Tank Pressure Sensor voltage parameter is within 1.3-1.7V.
- If not between the 1.3-1.7V
  Refer to P0452, P0453 within DTC P0451-P0454 .
- If between the 1.3-1.7V
Install the fuel tank filler cap. Engine idling at operating temperature for 5 min,
Verify the scan tool Fuel Tank Pressure Sensor parameter does not increase to greater than 2.5V when commanding the EVAP Purge Solenoid Valve to 50%.
- If greater than 2.5V
  Refer to Circuit System Testing.
- If 2.5V or less
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
- If the DTC sets
  Refer to Circuit System Testing.
- If the DTC does not set
All OK.