Buick Verano Engine Oil Pressure Switch Guide (2012-2017)
Understand the common failure symptoms of the engine oil pressure switch in your 2012-2017 Buick Verano and learn how to choose the right replacement part.
- A flickering or steady oil pressure light is a critical warning; stop driving immediately and check the oil level.
- Common failure symptoms include the oil light, check engine light, and physical oil leaks from the sensor.
- For the 2012-2017 Verano, this is a DIY-friendly repair, but you must confirm the engine's actual oil pressure is healthy before relying on a new sensor.
- Quality aftermarket brands offer a reliable, cost-effective alternative to the more expensive OEM part for this component.
Is Your Buick Verano Oil Pressure Light On?
A flickering or constantly lit oil pressure light on your dashboard is a serious warning. While it can indicate a genuinely low oil level or a failing oil pump, it's often caused by a faulty engine oil pressure switch. Ignoring this light can lead to catastrophic engine failure, so it's crucial to diagnose the problem immediately. A bad sensor can send incorrect signals, causing unnecessary worry or, worse, failing to warn you of a real oil pressure problem.
Immediate Action Required
If your oil pressure light comes on, stop the car as soon as it is safe to do so and turn off the engine. Driving with low oil pressure can destroy your engine in minutes. Check your oil level first. If the level is normal, the problem may be the sensor, but you should have the vehicle professionally diagnosed to confirm the actual oil pressure is safe before driving further.
Common Symptoms of a Failing Switch
A bad oil pressure switch on a 2012-2017 Buick Verano can cause several distinct symptoms:
🎬 Watch this video to learn more about bad sensor symptoms.- Oil Pressure Light On or Flickering: The most common sign is the oil pressure warning light illuminating on your dash. It might stay on constantly or flicker, especially during turns, braking, or at idle.
- Check Engine Light: The vehicle's computer can detect a problem with the sensor's circuit, triggering the Check Engine Light and storing a Diagnostic Trouble Code (DTC) like P0520, P0521, P0522, or P0523.
- Oil Leaks: The sensor itself can fail, developing a leak. You might notice oil residue on the sensor or drips under the engine.
- Unusual Engine Noises: If the sensor fails to report a true low-pressure situation, you might hear ticking or knocking noises from the engine due to lack of lubrication.
Choosing a Replacement: OEM vs. Aftermarket
When replacing the oil pressure switch, you have a choice between Original Equipment Manufacturer (OEM) parts and aftermarket options.
- OEM (ACDelco): The genuine GM/ACDelco part (part number 12673134) is designed specifically for your Verano's engine. It guarantees perfect fit and function, meeting GM's original quality standards. Some owners report that cheap, non-OEM parts can fail quickly, making the genuine part a more reliable choice despite the higher initial cost.
- Aftermarket Brands: Brands like Standard Ignition and Walker Products offer direct-fit replacements that are often more affordable. These parts are engineered to meet or exceed OE specifications and are a cost-effective solution. For a simple component like an oil pressure switch, a quality aftermarket part from a reputable brand is generally a reliable and budget-friendly choice.
A Note on Quality
While many aftermarket parts provide excellent value, some very low-cost, unbranded sensors have a higher failure rate. Sticking with recognized brands like Standard Ignition or Walker Products can provide a good balance of quality and price for your Verano.
Cost of Replacing the Engine Oil Pressure Switch
The total cost depends on whether you do the job yourself or hire a professional mechanic. The part itself is inexpensive, but labor can add to the final price.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Part | $23.80 - $26.59 |
| New OEM Part (ACDelco) | $53 - $90 |
| Shop Labor | $61 - $140 |
| Total Professional Replacement | $90 - $118 |
Frequently Asked Questions (FAQ)
Where is the oil pressure switch located on a 2012-2017 Buick Verano?
The oil pressure switch on the 2.4L engine is typically located on the engine block, often near the oil filter housing. 🎬 See a visual tour of the 2.4L engine sensor locations. You will need to raise the vehicle to access it from underneath.
Can I replace the oil pressure switch myself?
Yes, this is a feasible DIY job for someone with basic mechanical skills. It involves safely raising the vehicle, disconnecting the electrical connector, and using a deep socket (often a special oil pressure switch socket) to unscrew the old sensor and install the new one. An oil drain pan is needed as some oil will spill out.
🎬 Follow this guide to replace the switch using basic tools.Are there any recalls for the oil pressure switch on the Buick Verano?
There are no specific recalls for the oil pressure switch itself. However, there was a recall for some 2013-2014 Verano models related to the engine block heater cord, and other software-related recalls that could affect dashboard warnings. There is also a Technical Service Bulletin (TSB #13-06-01-003J) for some 2.4L engines concerning excessive oil consumption, which could lead to low oil pressure warnings.
What does the code P0521 mean on my Buick Verano?
The diagnostic trouble code P0521 indicates "Engine Oil Pressure Sensor/Switch Range/Performance." This means the engine's computer has detected that the sensor's reading is out of its expected range, though not necessarily a complete circuit failure. This is a strong indicator that the sensor is failing and should be replaced.
Helpful Videos
Technical Specifications
OEM Part Numbers: 12673134 12621234 12596951 24461500
The sensor for the Buick Verano is a single-terminal, blade-type switch with a round connector that monitors engine oil pressure. It functions as a switch to trigger a warning light when pressure drops below a safe threshold.
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.
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