The fuel tank pressure sensor is reading outside its expected range.
Informational only. Consult a qualified mechanic.
Replace fuel tank pressure sensor.
The P0451 OBD-II diagnostic trouble code (DTC) indicates: evap pressure sensor range/performance. This is a low-severity powertrain code that your vehicle's onboard diagnostics system triggers when the fuel tank pressure sensor is reading outside its expected range. If your check engine light is on with this code, the vehicle is generally safe to drive, but you should have it inspected soon.
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