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Diagnose/P0452
P0452Low SeverityEmissions

Evaporative Emission System Pressure Sensor Low Input

What This Means

The fuel tank pressure sensor is reading lower voltage than expected, indicating a potential sensor or circuit failure.

Common Symptoms

  • Check engine light on
  • Possible fuel smell
  • No driveability issues
  • Failed emissions test

Common Causes

  • Loose or damaged gas cap
  • Cracked EVAP hose
  • Faulty purge/vent valve
  • Charcoal canister issue
  • Fuel tank pressure sensor failure

Estimated Repair Cost

$50 – $400
Parts and labor (varies by vehicle and location)
Difficulty:Moderate

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For informational purposes only. Diagnostic trouble codes are starting points for diagnosis, not definitive answers. Always consult a certified mechanic for proper diagnosis and repair. Estimated costs vary by vehicle, location, and shop rates.