Buick Envision Fuel Tank Pressure Sensor Guide for 2016-2023 Models
Understanding why your Buick Envision's check engine light is on and what to do about the Fuel Tank Pressure Sensor.
- The Check Engine Light is the main symptom of a bad FTP sensor; codes P0451, P0452, or P0453 are common.
- For 2021-2023 models, check TSB 22-NA-203; overfilling the tank can mimic sensor failure.
- Always check for a loose gas cap before ordering parts, as it can cause the same warnings.
- Replacement requires lowering the fuel tank, making it a moderately difficult job.
Is Your Envision's Fuel Tank Pressure Sensor Failing?
The most common sign of a problem with the Fuel Tank Pressure Sensor is a steady Check Engine Light on your dashboard. While the sensor itself 🎬 Watch: 5 common symptoms and causes of sensor failure is a common cause, the light can also be triggered by something as simple as a loose gas cap. Before assuming the sensor is bad, always ensure your gas cap is tightened until it clicks. In some cases, a worn gas cap seal can also be the culprit.
Important TSB for 2021-2023 Envision Owners
General Motors issued Technical Service Bulletin (TSB) 22-NA-203 for some 2021-2023 Buick Envision models showing a check engine light with code P0451. The investigation found that overfilling the fuel tank (going past three clicks at the pump) can force liquid fuel into the EVAP vapor lines. This blocks the line and causes the sensor to give a false reading. The fix is to have a technician clear the fuel from the lines, not replace the sensor. Always avoid overfilling your fuel tank.
🎬 See this potential fix for the P0451 trouble codeChoosing the Right Aftermarket Sensor
When replacing the FTP sensor on your Envision, you have several aftermarket options that offer a balance of quality and value compared to OEM parts. Aftermarket parts are designed to provide the same fit and function as the original.
- Premium Aftermarket (Standard Ignition, Walker Products): Brands like Standard and Walker are well-regarded in the industry for producing reliable parts that meet or exceed OEM specifications. They are known for their durable construction and precise performance, making them a solid choice for a long-term repair. Owner feedback on these brands for similar sensors is generally positive.
- Budget-Friendly (Global Parts, Replacement): These brands offer a more affordable solution. They are a good option if you are looking for a functional part that fits your budget. While they meet basic requirements, they may not have the same long-standing reputation or extensive validation as premium brands.
Installation Details
Replacing the Fuel Tank Pressure Sensor on a Buick Envision is a moderately difficult job. The sensor is typically located on top of the fuel pump module, which is accessed from the top of the fuel tank. This means the fuel tank must be partially lowered from under the vehicle to gain access. For a skilled DIYer with the right tools and safety equipment (like a proper jack and stands), this is a feasible weekend project. For most owners, professional installation is recommended due to the need to work with the fuel system.
🎬 Watch: How to test and replace the pressure sensor| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Sensor | $44.32 - $80.68 |
| New OEM Sensor | $80 - $110 |
| Shop Labor | $305 - $448 |
Frequently Asked Questions (FAQ)
What error codes are related to a bad Fuel Tank Pressure Sensor?
The most common diagnostic trouble codes (DTCs) are P0451 (Sensor Performance), P0452 (Sensor Circuit Low Input), and P0453 (Sensor Circuit High Input). You might also see general EVAP leak codes like P0442 or P0456.
Can I drive my Envision with a bad Fuel Tank Pressure Sensor?
Yes, in most cases, the vehicle will drive normally. However, you will not pass an emissions test, and you may experience a slight decrease in fuel economy or minor performance issues over time. It's best to get it fixed to ensure your EVAP system is working correctly.
Where is the Fuel Tank Pressure Sensor located on the 2016-2023 Buick Envision?
The sensor is located on top of the fuel tank, usually integrated with the fuel pump module. To replace it, a mechanic will need to lower the fuel tank.
Could my check engine light just be a loose gas cap?
Absolutely. A loose or faulty gas cap is a very common cause for EVAP-related codes. Always check that your gas cap is tight and clicks at least once. If the light remains on after several driving cycles, the seal on the cap may be worn or another part, like the sensor, could be the issue.
Helpful Videos
Technical Specifications
OEM Part Numbers: 13502903
Typically features a 3-pin oval connector. Monitors pressure changes within the fuel tank for the EVAP system.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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