A Guide to the 2012-2017 Buick Verano Fuel Pressure Sensor
Understand the symptoms of a failing fuel pressure sensor and how to choose the right replacement for your Verano.
- A failing fuel pressure sensor on a Verano causes hard starts, stalling, poor performance, and a check engine light.
- Replacement is difficult as the sensor is located under the intake manifold, making it a job best left to professionals.
- Choosing a premium aftermarket brand like ACDelco or Standard Ignition is recommended over budget options due to the high labor cost of replacement.
- Similar symptoms can be caused by a failing high-pressure fuel pump, so proper diagnosis is essential before replacing the sensor.
Is Your Buick Verano Running Rough? It Could Be the Fuel Pressure Sensor
If your 2012-2017 Buick Verano is experiencing issues like a rough idle, difficulty starting, or a sudden loss of power, a faulty fuel pressure sensor could be the culprit. This small but vital sensor plays a big role in how your engine performs. When it starts to fail, it can send incorrect signals to your car's computer, leading to the wrong amount of fuel being delivered to the engine. This guide will walk you through the common symptoms, help you choose the best aftermarket replacement, and explain what's involved in the repair.
Common Failure Symptoms
A bad fuel pressure sensor can mimic other problems, but it often triggers a specific set of symptoms. The most obvious sign is the Check Engine Light illuminating on your dashboard. You may also experience:
- Hard Starting: The engine cranks for a long time before it finally starts, or it may not start at all.
- Rough Idle and Stalling: The engine idles erratically, shakes, or stalls unexpectedly, especially when you come to a stop.
- Poor Engine Performance: You may notice sluggish acceleration, hesitation when you press the gas pedal, or a general lack of power. Your car might enter a "reduced power" or "limp mode."
- Decreased Fuel Economy: If the sensor causes the engine to run rich (too much fuel), you'll see a drop in your gas mileage and may even notice black smoke from the exhaust.
Related Issues to Consider
For the 2.4L engine, GM issued Technical Service Bulletin (TSB) #21-NA-218. It notes that symptoms like a rough idle and a P0172 trouble code (System Too Rich) can sometimes be caused by a failing high-pressure fuel pump that leaks fuel into the engine oil. Before replacing the sensor, it's wise to rule out this more serious issue, as the symptoms can be very similar.
Additionally, a safety recall (NHTSA 16V595000) was issued for some 2016 Verano models with the 2.0L turbo engine for a misrouted fuel line that could leak. This does not involve the sensor but is a critical fuel system check for affected vehicles.
Choosing the Right Aftermarket Fuel Pressure Sensor
When it comes to electronic sensors, quality matters. While a cheaper part might be tempting, a low-quality sensor can fail quickly or provide inaccurate readings, causing the same problems to return. Here’s a breakdown of the available brands:
- Premium Brands (ACDelco, Standard Ignition): ACDelco is the original equipment (OE) manufacturer for GM, so their parts offer a guaranteed fit and performance equivalent to the factory original. Standard Ignition (also known as SMP) is a highly respected aftermarket manufacturer known for producing quality electronic components that meet or exceed OE specifications. These are your most reliable choices.
- Mid-Grade Brands (Walker Products, URO Parts): These brands offer a balance between price and quality. They are generally considered reliable for the price, but may not have the same long-term durability or precise calibration as the premium options.
- Budget Brands (Dorman, Replacement): Dorman has a mixed reputation; while some of their products are innovative, their electronic sensors are often cited in forums for high failure rates. "Replacement" is a generic brand. While these parts are the most affordable, they carry a higher risk of premature failure, which could mean doing this difficult repair job a second time.
Pro Tip: For a critical sensor that requires significant labor to access, spending a little more on a premium brand like ACDelco or Standard is a wise investment. The higher-quality part provides peace of mind and helps you avoid a repeat repair down the road.
Replacement Cost
The fuel pressure sensor on the Verano is located under the intake manifold, making replacement a labor-intensive job. This is not a simple part to access for a beginner. The costs below are estimates and can vary by location and repair shop.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Sensor | $42 - $88 |
| New OEM Sensor | $65 - $135 |
| Shop Labor | $180 - $400 (1.5-2.5 hours) |
| Total Professional Replacement | $222 - $488 |
Frequently Asked Questions
Can I replace the fuel pressure sensor myself?
This is a challenging DIY job. The sensor is located under the intake manifold, which must be removed to gain access. This requires disconnecting various hoses, wires, and brackets. If you are not an experienced mechanic with the proper tools, it is recommended to have a professional perform the replacement.
What trouble codes are associated with a bad fuel pressure sensor?
The most common codes are in the P0190 to P0194 range. Specifically for the Verano, codes like P0191 (Fuel Rail Pressure Sensor Circuit Range/Performance) are frequently seen when this sensor fails.
Is it safe to drive with a bad fuel pressure sensor?
It is not recommended. A failing sensor can cause the engine to stall unexpectedly, which is a serious safety hazard in traffic. It can also lead to hard starting, leaving you stranded. You should get the vehicle inspected and repaired as soon as possible.
Will a new sensor fix my Verano's rough idle?
It might. A bad fuel pressure sensor is a common cause of rough idling. However, other issues like a faulty high-pressure fuel pump, dirty fuel injectors, or vacuum leaks can also cause a rough idle. Proper diagnosis is key before replacing parts.
Helpful Videos
Technical Specifications
OEM Part Numbers: 12635273 12618108 13500745
The fuel pressure sensor for the 2012-2017 Buick Verano is located on the high-pressure fuel rail. It is specific to the direct injection system used in the 2.0L Turbo and 2.4L Ecotec engines.
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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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