Buick Regal Mass Air Flow Sensor Guide for 2011-2017 Models
Experiencing stalling, poor acceleration, or bad gas mileage? Your MAF sensor might be the problem.
- Common symptoms of failure include a Check Engine Light (P0101 code), stalling, hesitation, and poor gas mileage.
- Replacement is very easy and a great DIY task, typically taking less than 15 minutes with basic tools.
- Before replacing, always check for simpler issues like a dirty air filter or cracks in the intake hose.
- For best results, choose a premium aftermarket brand like ACDelco or Delphi, as cheap sensors are often unreliable for GM vehicles.
Is Your Regal Running Rough? It Could Be the MAF Sensor
If your 2011-2017 Buick Regal is hesitating, stalling, or using more gas than usual, a failing Mass Air Flow (MAF) sensor is a likely suspect. This sensor is vital for your engine's performance, but it can get dirty or fail over time, leading to a variety of noticeable problems. Fortunately, diagnosing and replacing it is often a straightforward job you can do yourself.
Symptoms of a Bad MAF Sensor in a Buick Regal
When the MAF sensor sends incorrect information, the engine's air-fuel mixture becomes unbalanced. This can cause several issues:
- Check Engine Light: This is the most common sign. A scanner will often show codes like P0101, which points to a problem with the MAF sensor's performance or range. 🎬 Watch: Two ways to diagnose and fix a P0101 error code.
- Hesitation and Stalling: The car may jerk, hesitate during acceleration, or stall completely, especially when coming to a stop.
- Rough Idle: The engine may idle unevenly, sputter, or shake because the air-fuel ratio is unstable.
- Poor Fuel Economy: If the sensor causes the engine to run rich (too much fuel), you'll notice you're filling up the gas tank more often.
- Black Smoke from Exhaust: This is a clear sign the engine is running too rich, meaning excess fuel is being burned.
First, Check the Simple Things
Before you buy a new sensor, make sure the problem isn't something simpler. A dirty or clogged engine air filter can restrict airflow and cause a P0101 code. Also, inspect the air intake tube for any cracks, loose clamps, or disconnected hoses between the sensor and the engine, as these vacuum leaks can cause similar symptoms.
Choosing the Right Aftermarket MAF Sensor
When it comes to sensitive electronics like the MAF sensor, quality matters. While many aftermarket options are available, they are not all created equal. Forum discussions with GM owners often show that very cheap, no-name sensors can be unreliable, causing performance issues right out of the box.
Here’s a breakdown of the brands available:
- Premium Brands (OEM-Equivalent): ACDelco and Delphi are often the original equipment suppliers for GM. Choosing one of these is the safest bet for factory performance and longevity. Hitachi is another well-regarded OEM supplier for many brands and a solid choice. NGK and Standard Ignition (SMP) also have a strong reputation for quality electronics.
- Mid-Tier Brands: Brands like Spectra, Walker Products, and Beck Arnley offer a good balance of price and quality. They are generally reliable, though some users have reported occasional issues with fit or immediate performance compared to premium brands.
- Economy Brands: Brands like Cardone, DriveWire, and Skyward are the most budget-friendly. While they can work, they are more of a gamble in terms of accuracy and how long they will last. A remanufactured Cardone part can be a cost-effective option, but a new premium sensor is often worth the extra cost for peace of mind.
Can I Just Clean My MAF Sensor?
Sometimes, yes. If the sensor wire is just dirty from dust or oil, cleaning it with a dedicated MAF sensor cleaner spray can solve the problem. However, if the internal electronics have failed, cleaning won't help, and you'll need a replacement. Never touch the delicate sensor wires.
🎬 See this detailed guide on how to safely clean your sensor.Cost of Replacing a Buick Regal MAF Sensor
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket | $52 - $405 |
| Shop Labor | $45 - $70 |
Cost estimates are for the part only and do not include taxes or shipping. Labor costs are based on an estimated 0.25-0.5 hours of work at a typical shop rate.
Known Issues, Recalls, or TSBs
As of early 2026, there are no specific recalls or Technical Service Bulletins (TSBs) from the National Highway Traffic Safety Administration (NHTSA) for widespread failure of the mass airflow sensor on the 2011-2017 Buick Regal. However, owner forums frequently discuss MAF sensor-related stalling and performance problems, indicating it is a common failure point.
Frequently Asked Questions (FAQ)
Is it difficult to replace the MAF sensor myself?
No, this is a very easy job for a DIYer. The sensor is located on the air intake tube right after the air filter box. It's held in by two screws and a single electrical connector. The entire job usually takes less than 15 minutes with basic tools.
🎬 Watch: Step-by-step MAF sensor replacement for your Buick Regal.Do I need to disconnect the battery or reset the computer?
It's always a good practice to disconnect the negative battery terminal before working on electrical components. After installing the new sensor, you should use an OBD-II scanner to clear any stored trouble codes. The system will then relearn the new sensor's parameters as you drive.
What happens if I ignore a bad MAF sensor?
Continuing to drive with a faulty MAF sensor can lead to more serious problems. Persistently running rich can damage your catalytic converter, which is a much more expensive repair. You'll also suffer from poor performance, bad fuel economy, and may fail an emissions test.
Will a cheap MAF sensor work?
It might, but it's a risk. Cheaper sensors may not be calibrated as precisely as OEM or premium aftermarket parts. This can lead to continued performance issues, a check engine light, and the need to replace the part again sooner. For a critical component like this, it's often better to invest in a quality brand.
Helpful Videos
Technical Specifications
OEM Part Numbers: 13505433 22798415 AF10043
The MAF sensor for the 2011-2017 Buick Regal is typically a 5-pin or 8-pin sensor element, often integrated with the Intake Air Temperature (IAT) sensor. It is located in the air intake duct after the air filter housing.
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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.
- Buick Regal:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Regal Running Rough? It Could Be the MAF Sensor
- Symptoms of a Bad MAF Sensor in a Buick Regal
- First, Check the Simple Things
- Choosing the Right Aftermarket MAF Sensor
- Can I Just Clean My MAF Sensor?
- Cost of Replacing a Buick Regal MAF Sensor
- Known Issues, Recalls, or TSBs
- Frequently Asked Questions (FAQ)
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