Engine Camshaft Position Sensor Guide for the 2011-2017 Buick Regal
Diagnose and fix common camshaft sensor problems to keep your Regal's engine running strong.
- Your Regal has two camshaft sensors (intake and exhaust); it's wise to replace both at the same time.
- Symptoms like stalling, rough idle, and no-start are common and can be a safety issue.
- This is a simple DIY replacement that requires basic tools and less than an hour of your time.
- While budget parts are available, choosing a premium aftermarket brand like Delphi, NTK, or an OEM ACDelco part is recommended for reliability.
Is Your Buick Regal Stalling or Running Rough?
A failing camshaft position sensor can cause a range of frustrating engine problems. Because this sensor is vital for engine timing, a bad signal can make your car difficult to drive or even leave you stranded. Understanding the symptoms and knowing how to choose the right replacement part can save you time and money.
Symptoms of a Failing Camshaft Position Sensor
When a camshaft position sensor starts to fail on your 2011-2017 Regal, you'll likely notice one or more of these signs:
- Check Engine Light: This is often the first and most obvious warning. The light will turn on when the ECM detects an incorrect or missing signal from the sensor.
- Difficulty Starting: Your engine may take longer than usual to start, or it might not start at all.
- Engine Stalling: The engine can stall unexpectedly, either at a stoplight or while driving, which can be a serious safety concern.
- Rough Idle and Poor Performance: You may feel shaking or vibrations when the car is stopped. During acceleration, the car might feel sluggish, hesitate, or lack power.
- Reduced Fuel Economy: When the engine timing is off, it burns fuel less efficiently, leading to more frequent trips to the gas station.
Check for Related Issues
Diagnostic Trouble Codes (DTCs) like P0011, P0016, or P0017 can sometimes point to other problems beyond the sensor itself. A GM Technical Service Bulletin (TSB #PIP4548F) notes that a slipped camshaft reluctor ring 🎬 See how timing chain issues can trigger similar sensor codes. can trigger these codes. Problems with the camshaft actuators or solenoids can also cause similar symptoms. 🎬 Learn how to swap out the camshaft actuator solenoid valves. It's important to properly diagnose the issue before replacing parts.
Choosing the Right Aftermarket Sensor
While an OEM sensor from the dealer is an option, the aftermarket offers a wide range of quality parts that can provide excellent value. They generally fall into three tiers:
- Premium Aftermarket (e.g., Delphi, NTK, Standard Motor Products): These brands have a strong reputation for quality and are often original equipment suppliers to various automakers. Delphi was originally part of GM, making it a trusted choice. These sensors are engineered to meet or exceed OEM specifications and are a reliable alternative to the dealer part.
- Quality Standard Aftermarket (e.g., Dorman, Holstein, Walker Products): These brands offer a balance of quality and affordability. Dorman is known for providing direct-fit replacements that are widely available. They are a solid choice for a dependable repair without the premium price tag.
- Economy Brands (e.g., URO Parts, various private labels): These are the most budget-friendly options. While they can get your car back on the road, their long-term durability and signal accuracy may not match that of higher-tier brands. They are best suited for temporary fixes or if budget is the primary concern.
OEM vs. Aftermarket
For critical electronic sensors like the camshaft position sensor, using a quality part is important to avoid repeat repairs. While ACDelco is the official GM original equipment part, premium aftermarket brands like Delphi and NTK offer comparable quality, often at a better price. Cheaper, lesser-known brands can sometimes fail prematurely or send a weak signal, causing persistent performance issues.
Estimated Replacement Costs
| Part/Service | Estimated Cost |
|---|---|
| New OEM (ACDelco) Sensor | $42 - $171 |
| New Aftermarket Sensor | $24 - $83 |
| Shop Labor | $63 - $92 |
| Total Professional Replacement | $100 - $263 |
Frequently Asked Questions
How many camshaft sensors does my 2011-2017 Buick Regal have?
Your Regal, whether it has the 2.0L Turbo or 2.4L engine, is equipped with two camshaft position sensors. One is for the intake camshaft (often called Sensor 'A') and the other is for the exhaust camshaft (Sensor 'B'). It is often recommended to replace them in pairs, as they are the same age and have experienced the same wear and tear.
Can I replace the camshaft position sensor myself?
Yes, this is a very DIY-friendly repair for most home mechanics. The sensors are typically located on the top or side of the engine and are held in by a single bolt. The process involves unplugging the electrical connector, removing the bolt, swapping the old sensor for the new one, and reconnecting it. The entire job usually takes less than an hour.
🎬 Watch this step-by-step guide to replacing your camshaft sensors.What happens if I don't replace a bad camshaft sensor?
Ignoring a failing camshaft sensor can lead to worsening symptoms. You may experience frequent stalling, very poor engine performance, and terrible gas mileage. Eventually, the engine may refuse to start at all. Driving with a faulty sensor is not recommended due to the risk of the engine stalling in traffic.
Are there any recalls for this part on my Buick Regal?
No, there have been no recalls issued by the NHTSA specifically for the engine camshaft position sensor on the 2011-2017 Buick Regal.
Helpful Videos
Technical Specifications
OEM Part Numbers: 12674704 12638266 213-4689 12577245
The 2011-2017 Buick Regal uses two 3-pin Hall-effect sensors, one for the intake camshaft and one for the exhaust camshaft. They are specific to the 2.0L and 2.4L 4-cylinder engines used in this generation.
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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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