AutoCodes – Dodge – P0451 Dodge

P0451 Dodge Code - Fuel Tank Pressure Sensor Range/Performance

Quick Answer

The Fuel Tank Pressure (FTP) pressure sensor detects pressure in the purge line. Common causes include Fuel Tank Pressure Sensor, Fuel Tank Pressure sensor harness is open or shorted, Fuel Tank Pressure sensor circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: P0451 Dodge indicates Fuel Tank Pressure Sensor Range/Performance.
Common causes: Common causes include Fuel Tank Pressure Sensor, Fuel Tank Pressure sensor harness is open or shorted, Fuel Tank Pressure sensor circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 5,989

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0451 Dodge Description

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.

OBDII Code P0451 Dodge - Fuel Tank Pressure Sensor Range/Performance - AutoCodes.com — P0451 Dodge Code - Fuel Tank Pressure Sensor Range/Performance

What does this mean?

What are the Possible Causes of the DTC P0451 Dodge?

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 to Fix the DTC P0451 Dodge?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0451 Dodge code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.