P0454: EVAP system pressure sensor intermittent
You can keep driving. Get it checked when convenient.
Can I drive with P0454?
Yes, you can keep driving. Signal from tank pressure sensor flickers over bumps; minor, but get it checked to vehicle.
What does P0454 mean?
P0454 stands for Evaporative Emission Control System Pressure Sensor Intermittent.
Symptoms you may notice
- Steady check engine light with minimal drivability symptoms
- Normal engine power, idle, and acceleration
- Possible faint gasoline vapor smell near gas cap
How much does it cost to fix?
Repair costs for code P0454 depend on the specific underlying root cause, ranging from simple DIY checks to component replacement. The table below lists the most common causes and rough price ranges in USD:
- Loose connection at the fuel tank pressure sensor
- Internally cracked sensor element
- Frayed wiring harness above rear axle
- Moisture in connector seal
What to do next
- Inspect the wiring connector above the fuel tank for tight seating.
- Clear codes and observe if code only re-occurs after driving over rough roads.
- Replace the pressure sensor if connections are solid.
Last updated: October 2026
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General guidance only, not a professional diagnosis. If the check-engine light is flashing, or the car is running rough, overheating or losing power, stop driving and get help.
About this code
Code P0454 represents an intermittent signal drop. Driving over speed bumps or rough terrain temporarily dislodges an oxidized pin. It is safe to keep driving.