Error code
OBD2 P0454
OBD2P0454
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Evaporative Emission System Pressure Sensor/Switch Intermittent.
Severity
moderateCan drive but may experience issues with emissions and fuel vapor leaks.
Summary
P0454 indicates an intermittent issue with the evaporative emission (EVAP) pressure sensor circuit, which monitors fuel vapor leaks in the EVAP system.
Common Causes
- Poor wiring or connection
- Faulty EVAP pressure sensor
- ECM malfunction
Fixes
- Inspect and repair wiring or connections related to the EVAP pressure sensor.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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