5 Top Kia Optima Camshaft Position Sensor Reviews
Is your Kia Optima feeling a bit off lately? Maybe the “Check Engine Light” has decided to make a permanent home on your dashboard, or perhaps your car struggles to start or runs a little rough. These could all be tell-tale signs of a faulty kia optima camshaft position sensor. This tiny but mighty component plays a crucial role in your engine’s performance, helping the engine control unit (ECU) know exactly where the camshaft is, ensuring precise fuel delivery and ignition timing.
When this sensor goes bad, your Optima’s brain gets confused, leading to a variety of frustrating symptoms. Replacing it is often a straightforward fix that can bring your car back to its old self. But with so many options out there, how do you pick the right one? Don’t worry, we’ve done the legwork for you!
In this article, we’ll dive deep into five of the best kia optima camshaft position sensor options available, helping you make an informed decision and get your ride running smoothly again.
Why Your Kia Optima Might Need a New Camshaft Position Sensor
The camshaft position sensor works hand-in-hand with the crankshaft position sensor to tell your car’s computer the exact position of the engine’s internal components. This information is vital for regulating spark timing and fuel injector operation, essentially dictating when and how much fuel is squirted into the engine and when the spark plugs ignite it.
When a camshaft position sensor starts failing, you might experience a range of symptoms, including:
* Illuminated Check Engine Light (CEL): This is often the first sign, usually accompanied by specific diagnostic trouble codes (DTCs) related to the camshaft circuit.
* Engine Stalling or Hesitation: The engine might abruptly die or lose power, especially when slowing down or stopping.
* Hard Starting: Your car might crank for longer than usual before finally turning over.
* Rough Idle or Misfires: The engine could feel shaky or uneven while idling, or you might notice a distinct misfire during acceleration.
* Poor Fuel Economy: Inconsistent timing can lead to inefficient fuel consumption.
If you’re noticing any of these issues, it’s a good idea to have your kia optima camshaft position sensor checked. Replacing it promptly can prevent further engine performance issues and save you from more costly repairs down the road.
Top 5 Kia Optima Camshaft Position Sensors Reviewed
Let’s check out some of the top-rated options to get your Optima back on track!
A-Premium Camshaft Position Sensor Compatible with Hyundai…

Looking for a reliable replacement that covers a wide range of vehicles, including various Kia Optima models? This A-Premium sensor is a fantastic choice. It’s built to stringent quality standards, offering a precise fit and dependable performance. What truly sets it apart is its extensive compatibility with numerous Hyundai and Kia models, ensuring that if you have multiple cars in the garage, this brand likely has you covered for other sensor needs too. Plus, the one-year unlimited-mileage guarantee gives you that extra peace of mind.
Key Features:
– Compatible with Kia Optima 2006-2016 L4 1.6L, 2.0L, 2.4L engines.
– Also fits a wide range of Hyundai and other Kia models (Forte, Sorento, Sportage, etc.).
– Reference OEM Part Numbers: 3935025010, PC719, PC719T.
– Features 3-pin blade terminal and black color.
– Comes with a one-year unlimited-mileage guarantee.
Pros:
– Broad vehicle compatibility.
– Reliable performance for various Optima years.
– Good warranty for peace of mind.
– Meticulously crafted for direct fitment.
Cons:
– Double-check specific vehicle fitment for your exact year and engine to avoid issues.
User Impressions:
Users frequently praise this sensor for its accurate fit and effective resolution of check engine light issues and rough running. Many find it to be a cost-effective and dependable alternative to OEM parts, noting its easy installation and immediate improvement in engine smoothness. It’s often seen as a solid “install and forget” component.
3935025010 Cam Camshaft Position Sensor Fits for Hyundai…

This sensor stands out for its direct OEM replacement design, meaning it’s engineered to fit and function just like the original part in your Kia Optima. It provides a clear explanation of its function and the symptoms of a failing sensor, which is incredibly helpful for DIYers. With an impressive 18-month warranty, it’s clear the manufacturer stands behind the quality and durability of this sensor, making it a trustworthy choice for your vehicle’s engine management system.
Key Features:
– Compatible with Kia Optima 2006-2016 L4 2.0L, 2.4L petrol engines.
– Direct replacement for OEM part numbers 3935025010, PC719, PC719T, 39350-25010, 907-825.
– Determines camshaft rotating position for spark timing and fuel injector operation.
– Plug-in installation method for easy setup.
– Backed by an 18-month worry-free warranty.
Pros:
– Exact OEM fitment ensures hassle-free installation.
– Long 18-month warranty offers great protection.
– Clearly explains its function and failure symptoms.
– Effective at resolving common engine performance issues.
Cons:
– Specific to certain engine types (L4 2.0L 2.4L Petrol).
User Impressions:
Customers report that this sensor is a perfect fit and resolves issues like stalling and hard starts almost instantly. The easy installation is a recurring highlight, making it a popular choice for those who prefer to handle repairs themselves. Its reliability and the prompt customer service are also frequently mentioned as positives.
39350-2G000 Engine Camshaft Position Sensor Compatible with…

For those with newer Kia Optima models (2015-2020), this sensor is a fantastic pick. Unlike some sensors that cater to older models, this one is specifically designed for later L4 2.0L and 2.4L engines, ensuring precise fitment and optimal performance. Its “premium construction” with industrial-grade materials suggests enhanced durability, which is exactly what you want from a critical engine component. The 18-month warranty further solidifies its value as a long-lasting solution.
Key Features:
– Compatible with Kia Optima 2015-2020 L4 2.0L, 2.4L engines.
– Also fits newer Hyundai and Genesis models.
– Replaces OEM part numbers 39350-2G000, 393502G000, 962-067, 5S15134, PC1045.
– Precision-engineered with industrial-grade materials for durability.
– Ensures optimal spark timing and fuel injection.
– Comes with an 18-month worry-free warranty.
Pros:
– Specifically designed for newer Optima models.
– High-quality construction for extended service life.
– Comprehensive 18-month warranty.
– Effective at restoring smooth engine performance.
Cons:
– Less compatible with older Kia Optima models.
User Impressions:
Reviewers commend this sensor for its perfect fit in newer vehicles and its ability to quickly clear check engine lights and resolve performance issues. Its robust build quality is often highlighted, suggesting it’s a durable component. Many consider it an excellent aftermarket alternative, providing OEM-like performance without the dealership price tag.
higherbro 3pcs Crankshaft + Camshaft Position Sensor Kits…

Why replace one sensor when you can upgrade your whole system? The higherbro kit offers a comprehensive solution, including one crankshaft position sensor and two camshaft position sensors. This is particularly appealing if you suspect multiple sensors might be failing, or if you simply want to refresh your engine’s critical timing components for complete peace of mind. It’s an excellent value proposition, especially if you’re tackling more extensive engine diagnostic work.
Key Features:
– Comprehensive 3-piece kit: 1x Crankshaft Position Sensor + 2x Camshaft Position Sensors.
– Compatible with Kia Optima 2011-2014 models (All engines).
– Also fits various Hyundai models (Santa Fe, Sonata, Tucson).
– Backed by a one-year quality guarantee.
– Advises checking “Amazonconfirmedfit” for precise compatibility.
Pros:
– Cost-effective for replacing multiple sensors at once.
– Includes both crankshaft and camshaft sensors.
– Good for preventive maintenance or comprehensive fixes.
– One-year quality guarantee.
Cons:
– You might not need all three sensors, potentially leading to unused parts.
– Specific year ranges for Kia Optima (2011-2014) may not cover all models.
User Impressions:
Customers appreciate the value of getting a complete sensor kit, often finding it a convenient solution for resolving a range of engine codes. The sensors generally fit well and perform as expected, making it a popular choice for those looking for a comprehensive and economical fix to their car’s sensor issues.
3935025010 Camshaft Position Sensor Compatible with…

This sensor is another strong contender for broad Kia Optima compatibility, covering a wide range of years from 2006 to 2016. Its emphasis on direct replacement and simple plug-in installation means you won’t need specialized tools or extensive automotive knowledge to get it installed. With the same OEM part numbers as some other top-tier options and an 18-month warranty, it promises reliable performance and excellent customer support if any issues arise, making it a solid choice for maintaining optimal engine function.
Key Features:
– Compatible with Kia Optima 2006-2016 L4 2.0L Petrol engines.
– Extensive vehicle fitment across various Kia and Hyundai models.
– Replaces OEM part numbers 3935025010, PC719, PC719T, 39350-25010, 907-825.
– Direct replacement design for easy plug-in installation.
– Determines camshaft position for spark timing and fuel injection.
– Includes an 18-month worry-free warranty.
Pros:
– Wide compatibility for older and newer Optima models.
– Easy to install with its direct replacement design.
– Comprehensive 18-month warranty and customer support.
– Effectively resolves common sensor-related engine problems.
Cons:
– Fitment specifically mentions L4 2.0L Petrol, so check your engine type carefully.
User Impressions:
Many users report this sensor to be a quick and effective fix for their vehicle’s intermittent stalling, hard starting, or check engine light issues. They frequently highlight the ease of installation and the fact that it resolves the problem without any further fuss, offering a durable and reliable solution.
Choosing the Right Camshaft Position Sensor for Your Kia Optima
When you’re ready to pick a new kia optima camshaft position sensor, keep these points in mind:
- Vehicle Compatibility: This is paramount. Always double-check the year, make, model, and engine size of your Kia Optima against the product’s listed fitment. Even slight variations can mean the sensor won’t fit or function correctly. Check OEM part numbers if possible.
- OEM vs. Aftermarket: While OEM (Original Equipment Manufacturer) parts are a safe bet, many high-quality aftermarket sensors offer comparable performance at a more affordable price. Look for brands with good reviews and warranties.
- Warranty: A good warranty (like the 1-year or 18-month ones mentioned above) is a sign that the manufacturer stands by their product.
- Reviews: Customer reviews can offer real-world insights into the sensor’s performance, ease of installation, and durability.
By considering these factors, you’ll be well-equipped to choose the best sensor for your Optima and get it back on the road, running like a dream!
FAQ Section
Q1: What does a camshaft position sensor do in a Kia Optima?
A: The camshaft position sensor monitors the rotational speed and position of the camshaft. It sends this data to the engine control unit (ECU), which then uses it, along with information from the crankshaft position sensor, to precisely control fuel injection timing and ignition spark for optimal engine performance.
Q2: What are the common symptoms of a bad camshaft position sensor in a Kia Optima?
A: Common symptoms include an illuminated Check Engine Light (often with codes like P0340), engine stalling, difficulty starting, rough idle, poor acceleration, reduced fuel economy, and occasional engine misfires.
Q3: Can I drive my Kia Optima with a bad camshaft position sensor?
A: While your car might still run with a failing sensor, it’s not recommended to drive for long. A faulty sensor can lead to unreliable engine performance, potential stalling, reduced power, increased fuel consumption, and in some cases, damage to other engine components if left unaddressed. It’s best to replace it as soon as symptoms appear.
Q4: Is replacing a Kia Optima camshaft position sensor a difficult DIY job?
A: For many Kia Optima models, replacing the camshaft position sensor is a relatively straightforward DIY task that requires basic tools. The sensor is usually located on the cylinder head or near the timing cover. However, always consult your vehicle’s service manual for exact location and procedure, as complexity can vary by engine and model year.
Q5: How much does it cost to replace a camshaft position sensor?
A: The cost of the sensor itself typically ranges from $20 to $100 for an aftermarket part, depending on the brand and quality. If you have it professionally installed, labor costs can add another $50 to $150, making the total cost anywhere from $70 to $250.
Q6: Do I need to replace the crankshaft position sensor if my camshaft position sensor is bad?
A: Not necessarily. They are separate sensors, but they work together. If diagnostic codes specifically point to the camshaft sensor, you usually only need to replace that one. However, if both are original and have high mileage, some people opt to replace both for preventive maintenance, especially if they come in a kit like one of the products reviewed.
Q7: What’s the difference between OEM and aftermarket camshaft position sensors?
A: OEM (Original Equipment Manufacturer) sensors are made by the same company that supplied the parts for your car’s original assembly. Aftermarket sensors are made by third-party companies. Aftermarket options are often more affordable and can offer comparable quality, but it’s important to choose reputable brands with good reviews and warranties to ensure reliability.
