AutoCodesChevrolet – P0454 2014 Chevrolet Silverado

P0454 2014 Chevrolet Silverado 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 2014 Chevrolet Silverado 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 721
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 12, 2024
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Code P0454 2014 Chevrolet Silverado 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 2014 Chevrolet Silverado - Fuel Tank Pressure Sensor Circuit Intermittent - AutoCodes.com
P0454 2014 Chevrolet Silverado Code - Fuel Tank Pressure Sensor Circuit Intermittent

What are the Possible Causes of the DTC P0454 2014 Chevrolet Silverado?

  • 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 2014 Chevrolet Silverado?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0454 2014 Chevrolet Silverado 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.

Need more information about the P0454 2014 Chevrolet Silverado code?

Need more information on how to fix the P0454 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 2014 Chevrolet Silverado Code

1. What does the OBDII code P0454 mean on a 2014 Chevrolet Silverado?

P0454 indicates an intermittent issue with the fuel tank pressure sensor circuit, which monitors the pressure in the evaporative emissions (EVAP) system.

2. What are the common symptoms of code P0454 in a 2014 Chevrolet Silverado?

Symptoms may include an illuminated check engine light, poor fuel economy, difficulty refueling, or failed emissions tests.

3. What causes the P0454 code to appear in a 2014 Silverado?

Common causes include a faulty fuel tank pressure sensor, damaged wiring or connectors, EVAP system leaks, or issues with the vehicle's PCM.

4. Can I drive my 2014 Silverado with a P0454 code?

Yes, but it is not recommended for extended periods, as it could affect emissions and may lead to further issues with the EVAP system.

5. How do I diagnose the P0454 code in a 2014 Chevrolet Silverado?

Diagnose by inspecting the fuel tank pressure sensor, checking for damaged wiring or connectors, and testing the EVAP system for leaks.

6. How do I fix the P0454 code on my 2014 Chevrolet Silverado?

Repairs may include replacing the fuel tank pressure sensor, repairing or replacing damaged wiring, or addressing EVAP system leaks.

7. What tools are needed to troubleshoot a P0454 code?

You’ll need an OBDII scanner, a multimeter to check wiring, and possibly a smoke machine to test for EVAP system leaks.

8. How much does it cost to fix the P0454 code on a 2014 Silverado?

Repair costs vary; replacing a fuel tank pressure sensor typically costs $150-$300, while EVAP system repairs may cost more depending on the issue.

9. Can a loose gas cap cause a P0454 code in a 2014 Chevrolet Silverado?

A loose gas cap typically triggers other EVAP-related codes, but it’s worth checking since it can indirectly affect pressure readings.

10. Does the P0454 code affect vehicle performance?

While it may not directly impact performance, it can lead to reduced fuel efficiency and emissions system issues if not addressed.

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