Monitor DTC Status

Engine Control
P0454 Evap. Emission System - Pressure Sensor Intermittent(DTP_NOISE):_:Monitor DTC Status

Monitor DTC Status

NOTE:
If any DTCs (or pending codes) relating to FTPS are present, do ALL REPAIRS associated with those codes before proceeding with this troubleshooting tree.

1. Start engine to normal operating temperature.

NOTE:
Evaporative Emissions Systems (EVAP) Leak Tests can be run by the Scan Tool. The tests are automated and provide either a pass-fail result or directions to check for DTCs.

2. Install scan tool and clear DTC
3. Perform "EVAP. LEAKAGE TEST" mode referring to enable conditions as below.

NOTE:
EVAP. Leakage Test enable conditions
1. Following conditions must be fulfilled to start the test.
1) Engine warm up at Idle Status
2) No relevant DTC
3) Fuel level is below 80%

4. Is DTC P0454 set again?
YES
> Go to next step as below.
NO
> Fault is intermittent caused by poor contact in the sensor's and/or PCM's connector or was repaired and PCM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure.