P0451 2015 GMC Sierra Code - Fuel Tank Pressure Sensor Performance
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
- P0451 2015 GMC Sierra indicates Fuel Tank Pressure Sensor Performance.
- 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.
Code P0451 2015 GMC Sierra Description
What are the Possible Causes of the DTC P0451 2015 GMC Sierra?
- 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 P0451 2015 GMC Sierra?
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 2015 GMC Sierra 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 P0451 2015 GMC Sierra code?
Need more information on how to fix the P0451 2015 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0451 2015 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0451 2015 GMC Sierra Code
1. What does the OBDII code P0451 mean for a 2015 GMC Sierra?
P0451 indicates a problem with the fuel tank pressure sensor's performance, which is part of the EVAP system.
2. What are common symptoms of code P0451 in a 2015 GMC Sierra?
Symptoms may include a check engine light, difficulty refueling, reduced fuel efficiency, or a faint fuel smell.
3. What causes code P0451 in a 2015 GMC Sierra?
Common causes include a faulty fuel tank pressure sensor, damaged wiring, or issues with the EVAP system, such as a clogged vent line.
4. Can I drive my 2015 GMC Sierra with code P0451?
While the vehicle is usually safe to drive, ignoring the issue may lead to reduced efficiency and difficulty passing emissions tests.
5. How do you diagnose the P0451 code in a 2015 GMC Sierra?
Diagnosis involves using a scan tool, inspecting the fuel tank pressure sensor, checking wiring, and testing EVAP system components.
6. How do you fix code P0451 on a 2015 GMC Sierra?
Repairs may include replacing the fuel tank pressure sensor, repairing damaged wiring, or cleaning/replacing EVAP system components.
7. How much does it cost to repair code P0451 in a 2015 GMC Sierra?
Costs vary but typically range from $150 to $300, depending on whether the sensor or wiring needs replacement.
8. Can a loose gas cap cause code P0451 on a 2015 GMC Sierra?
While unlikely, a loose or damaged gas cap can contribute to EVAP system issues, so checking it is a good first step.
9. Does code P0451 affect fuel economy in a 2015 GMC Sierra?
Yes, P0451 can lead to slightly reduced fuel economy due to EVAP system inefficiencies.
10. How do I reset the check engine light after fixing code P0451 on a 2015 GMC Sierra?
Use an OBDII scan tool to clear the code, or the light may turn off automatically after several drive cycles if the issue is resolved.
Discuss the causes and fixes for P0451 2015 GMC Sierra OBDII Code
Code P0451 2015 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
