Engine-Codes - Mazda - P0451 MAZDA

P0451 MAZDA - Fuel Tank Pressure Sensor Malfunction

Repair Importance Level: 1/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P0451 MAZDA Possible Causes

  • Fuel Tank Pressure Sensor
  • Fuel Tank Pressure sensor harness is open or shorted
  • Fuel Tank Pressure sensor circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How do I fix code P0451 MAZDA?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Cost of diagnosing the P0451 MAZDA code

Labor: 1.0

The cost of diagnosing the P0451 MAZDA code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

When is the code detected?

An improper voltage signal from the fuel tank pressure sensor is sent to Engine Control Module (ECM).

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P0451 MAZDA Meaning

The Fuel Tank Pressure (FTP) pressure sensor detects pressure in the purge line. The sensor output voltage to the Engine Control Module (ECM) increases as pressure increases.

P0451 MAZDA More Information

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