Test Description
The number below refers to the step number on the diagnostic table.
- 3: Sealing the system will allow normal pressure in the EVAP system to preload the sensor. This will help put the sensor in a range that is more sensitive, making the test more accurate.
DTC P0454
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Evaporative Emissions (EVAP) Hose Routing Diagram
and Engine Controls Schematics Connector End View Reference: Engine Control Module (ECM) Connector End Views or Engine Controls Connector End Views |
|||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 | Are DTCs P0442, P0446, P0452, P0453, or P0651 also set? | Go to Diagnostic Trouble Code (DTC) List - Vehicle | Go to Step 3 |
| 3 | Inspect for an intermittent and for a poor connection at the fuel tank pressure (FTP) sensor. Refer to Testing for Intermittent Conditions and Poor Connections
. Did you find and correct the condition? |
Go to Step 5 | Go to Step 4 |
| 4 | Replace the FTP sensor. Refer to Fuel Tank Pressure Sensor Replacement
. Did you complete the replacement? |
Go to Step 5 | - |
| 5 | Observe the Capture Info with a scan tool. Are there any DTCs that have not been diagnosed? |
Go to Diagnostic Trouble Code (DTC) List - Vehicle | System OK |