AutoCodes – Pontiac – P0454 Pontiac

P0454 Pontiac Code - Fuel Tank Pressure Sensor Circuit Intermittent

Quick Answer

The fuel tank pressure sensor measures vapor pressure or vacuum in the Evaporative Emission (EVAP) system. Common causes include Faulty Fuel Tank Pressure (FTP) 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: P0454 Pontiac indicates Fuel Tank Pressure Sensor Circuit Intermittent.
Common causes: Common causes include Faulty Fuel Tank Pressure (FTP) 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 2,861

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jun 28, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P0454 Pontiac Description

The fuel tank pressure sensor measures vapor pressure or vacuum in the Evaporative Emission (EVAP) system. The Engine Control Module (ECM) supplies a 5 V reference and a low reference circuit to the fuel tank pressure sensor. The fuel tank pressure sensor signal voltage varies depending on EVAP system pressure or vacuum. The control module also uses this fuel tank pressure signal to determine atmospheric pressure for use in the engine-off small leak test, DTC P0442. Before using this signal as an atmospheric reference, it must first be re-zeroed. The Diagnostic Trouble Code (DTC) will be set if during the engine-off natural vacuum small leak test, P0442, the ECM detects an abrupt fuel tank pressure signal change, other than a refueling event. An abrupt change is defined as a change of greater than 0.45 in H2O in the span of 1 s but less than 1 in H2O in 12.5 ms.

OBDII Code P0454 Pontiac - Fuel Tank Pressure Sensor Circuit Intermittent - AutoCodes.com — P0454 Pontiac Code - Fuel Tank Pressure Sensor Circuit Intermittent

What does this mean?

What are the Possible Causes of the DTC P0454 Pontiac?

Faulty Fuel Tank Pressure (FTP) 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 P0454 Pontiac?

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 does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0454 Pontiac 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.

Frequently Asked Questions about P0454 Pontiac Code

What does the OBDII code P0454 mean for a Pontiac?

P0454 indicates that the fuel tank pressure sensor circuit is experiencing intermittent voltage readings, which can affect the EVAP system's ability to detect leaks.

What are the common symptoms of code P0454 in a Pontiac?

Symptoms may include an illuminated check engine light, difficulty refueling, poor fuel efficiency, and occasional fuel odors.

What causes the P0454 code in a Pontiac?

Common causes include a faulty fuel tank pressure sensor, damaged wiring or connectors, loose gas cap, or issues with the EVAP system components.

Can a loose gas cap trigger code P0454 on a Pontiac?

Yes, a loose or damaged gas cap can disrupt the EVAP system and potentially cause an intermittent fuel tank pressure sensor reading.

How can I diagnose the P0454 code on my Pontiac?

Use an OBDII scanner to confirm the code, visually inspect the fuel tank pressure sensor and its wiring, check the gas cap, and test the sensor for proper voltage readings.

How do you fix the P0454 code in a Pontiac?

Repairs may involve tightening or replacing the gas cap, replacing the fuel tank pressure sensor, repairing damaged wiring, or addressing other EVAP system issues.

Is it safe to drive with the P0454 code on a Pontiac?

While the vehicle may be drivable, prolonged issues can lead to reduced fuel efficiency and potential EVAP system damage. It's best to address the issue promptly.

How much does it cost to repair the P0454 code on a Pontiac?

Costs vary but typically range from $100 to $300 depending on whether the issue is a gas cap replacement, sensor repair, or wiring fix.

Can a faulty fuel tank pressure sensor cause other EVAP-related codes on a Pontiac?

Yes, a malfunctioning sensor can lead to additional EVAP system codes, as it impacts the system's ability to monitor pressure accurately.

What tools do I need to fix the P0454 code on a Pontiac?

You’ll need an OBDII scanner, a multimeter for testing the sensor, and basic tools for inspecting and replacing components like the gas cap or wiring.