A Guide to the Manifold Absolute Pressure Sensor for the 2016-2020 Buick Envision
Experiencing poor fuel economy or a rough idle in your Envision? Your MAP sensor might be the culprit.
- A bad MAP sensor in your Envision will typically cause a rough idle, poor fuel economy, and hesitation, often with a P0106 or P0107 trouble code.
- For a reliable repair, choose an OEM-equivalent brand like Bosch or Delphi, or a trusted aftermarket name like Standard Ignition.
- Replacement is a simple DIY task for most owners, requiring basic tools and less than 30 minutes.
- Always check for vacuum leaks or wiring issues before replacing the sensor, as they can cause similar symptoms.
Is Your Envision Running Rough? It Could Be the MAP Sensor.
If your Buick Envision isn't running like it used to, a small but vital sensor could be to blame. The Manifold Absolute Pressure (MAP) sensor provides crucial data to your engine's computer. When it starts to fail, it can cause a range of noticeable problems. Because it's exposed to constant heat and vibration, a MAP sensor can wear out over time, typically showing signs of failure between 125,000 and 150,000 miles.
Symptoms of a Failing MAP Sensor
A bad MAP sensor sends incorrect information to the engine computer, leading to an improper air-fuel mixture. This can cause several issues, from annoying to serious. Watch out for these common signs:
- Check Engine Light: This is often the first sign. The system may store trouble codes like P0106, P0107, or P0108. 🎬 Watch this guide to fixing common MAP sensor trouble codes.
- Poor Fuel Economy: If the engine runs too rich (too much fuel), you'll notice you're filling up the tank more often.
- Rough Idle: The engine may shake, vibrate, or struggle to maintain a steady RPM when stopped.
- Hesitation or Stalling: You might feel a lack of power when you accelerate, or the engine could stall when you come to a stop.
- Black Smoke from Exhaust: This is a clear sign the engine is running rich, burning too much fuel. 🎬 Learn more about identifying and solving bad MAP sensor symptoms.
Don't Ignore the Signs
Continuing to drive with a bad MAP sensor can lead to more than just poor performance. An incorrect air-fuel ratio can eventually damage other expensive components, like your catalytic converter.
Choosing the Right Aftermarket MAP Sensor
You don't need to buy a part from the dealer to get your Envision running right again. The aftermarket offers a wide range of options. However, quality can vary. Here’s a breakdown of the brands available to help you choose.
Tier 1: OEM-Equivalent Quality
These brands are often the original equipment manufacturers (OEM) for General Motors or have a reputation for equivalent quality and reliability. They are the safest bet for a direct, trouble-free replacement.
- Bosch: A major OEM supplier for many automakers, including GM. Known for high-quality, reliable electronics.
- Delphi: Another top-tier OEM supplier with a strong reputation for engine management components.
- NGK: While best known for spark plugs, their sensor line (NTK) is highly regarded for its quality and precision.
Tier 2: Reliable Aftermarket Alternatives
These brands offer a good balance of quality and price. They are trusted names in the aftermarket and provide a solid repair without the premium price of an OEM part.
- Standard Ignition (SMP): A long-standing, reputable aftermarket brand that offers quality parts.
- Spectra: Known for producing reliable fuel and engine management components.
Tier 3: Value-Focused Options
These brands are for the budget-conscious owner. While they can get the job done, be aware that quality control might not be as consistent as the higher-tier brands.
- Walker Products
- Global Parts
- True Tech
Cost of Replacing the Buick Envision MAP Sensor
Replacement costs can vary based on your location and whether you do the work yourself or hire a professional mechanic.
| Part/Service | Estimated Cost |
|---|---|
| New OEM (ACDelco) Part | $35 - $50 |
| New Aftermarket Part | $39 - $103 |
| Shop Labor | $90 - $132 |
| DIY Total (Aftermarket Part) | $39 - $103 |
| Shop Total (Aftermarket Part + Labor) | $129 - $235 |
Prices are estimates and can vary. Shop labor is based on a typical 0.5-1.0 hour job.
Frequently Asked Questions
Can I clean my Buick Envision's MAP sensor?
While some sensors like the Mass Airflow (MAF) sensor can be cleaned, it is generally not recommended or effective for a MAP sensor. They are sealed units, and the failure is usually internal. If it's faulty, it needs to be replaced.
Is replacing the MAP sensor a DIY job?
Yes, for most people with basic tools. The MAP sensor is usually located on the intake manifold and held in by a single bolt. It involves disconnecting the electrical connector, removing the bolt, swapping the sensor, and reconnecting everything. It's a quick and easy job that can save you on labor costs.
Are there any recalls for the Envision MAP sensor?
As of late 2024, there are no specific recalls or widespread Technical Service Bulletins (TSBs) from GM or the NHTSA for MAP sensor failure on the 2016-2020 Buick Envision. Failures are typically due to age and normal wear.
How do I know I'm ordering the right part?
The 2016-2020 Buick Envision was available with a 2.5L or a 2.0L Turbo engine. While they may use the same sensor, it's critical to verify the part number for your specific vehicle. The OEM part number for many of these models is 25203477 (which replaces 12643955). Always use your vehicle's VIN to confirm fitment with the part seller.
Helpful Videos
Technical Specifications
OEM Part Numbers: 25203477 12643955 12635044 12612110 55573248
The MAP sensor for the Buick Envision is typically a 3-pin sensor that mounts directly to the intake manifold.
We Have This Part in Stock
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.
- Buick Envision:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Envision Running Rough? It Could Be the MAP Sensor.
- Symptoms of a Failing MAP Sensor
- Don't Ignore the Signs
- Choosing the Right Aftermarket MAP Sensor
- Tier 1: OEM-Equivalent Quality
- Tier 2: Reliable Aftermarket Alternatives
- Tier 3: Value-Focused Options
- Cost of Replacing the Buick Envision MAP Sensor
- Frequently Asked Questions
- 🎟️ Get 5% Off