10 Top Picks: Camshaft Position Sensor vs Crankshaft Position Sensor Explained & Reviewed

Ever had your car sputter, struggle to start, or suddenly lose power? Chances are, one of your engine’s crucial “eyes” or “ears” might be acting up. We’re talking about the camshaft position sensor and the crankshaft position sensor. These aren’t just fancy terms; they’re vital components that tell your engine’s computer exactly what’s going on inside, ensuring everything runs like a well-oiled machine. But what’s the real difference between a camshaft position sensor vs crankshaft position sensor, and why do you need both? Let’s dive in!

In this comprehensive guide, we’ll break down the roles of these essential sensors, explore common symptoms of sensor failure, and help you understand why they’re so important for your vehicle’s performance. Plus, we’ve got 10 top-rated sensor kits and individual sensors to help you get your ride back on track, ensuring you make an informed choice when it’s time for a replacement.

Understanding the Role of Position Sensors

Modern car engines rely heavily on precision. To ignite fuel at just the right moment and open valves for optimal airflow, your engine’s control unit (ECU) needs constant, accurate data about the rotational position and speed of key components. This is where the camshaft and crankshaft position sensors come into play.

They are both magnetic sensors that generate an electrical signal based on the movement of a toothed wheel or tone ring. This signal is sent to the ECU, which then uses this information to precisely control engine timing, fuel injection, and ignition.

Camshaft Position Sensor vs Crankshaft Position Sensor: The Core Differences

While both sensors are critical for engine timing, they serve distinct purposes and are located in different parts of the engine. Understanding the nuances of a camshaft position sensor vs crankshaft position sensor is key to diagnosing issues correctly.

The Camshaft Position Sensor (CPS)
The camshaft position sensor, often referred to as the cam sensor, monitors the rotational position of the camshaft. The camshaft controls the opening and closing of your engine’s intake and exhaust valves. By knowing the camshaft’s position, the ECU can determine which cylinder is at its compression stroke. This is vital for delivering the right amount of fuel and triggering the spark at the precise moment for efficient combustion.

  • Symptoms of a failing CPS: Engine misfires, rough idling, hesitation during acceleration, reduced fuel economy, difficulty starting, and often, the illumination of your “Check Engine” light.

The Crankshaft Position Sensor (CKP)
The crankshaft position sensor, or crank sensor, tracks the rotational speed and position of the crankshaft. The crankshaft is directly connected to the pistons, translating their up-and-down motion into rotational force. This sensor provides the ECU with crucial information about engine RPM (revolutions per minute) and the exact position of the pistons. This data is fundamental for managing ignition timing and fuel delivery across all cylinders.

  • Symptoms of a failing CKP: Engine stalling (especially when warm), prolonged cranking before starting, intermittent engine misfires, erratic RPM readings, and again, the “Check Engine” light.

How They Work Together
Think of it like a conductor and a rhythm section in an orchestra. The crankshaft position sensor is the primary rhythm, telling the ECU the fundamental speed and beat of the engine. The camshaft position sensor is the nuanced conductor, ensuring that each instrument (cylinder) plays its part (fuel injection, valve opening) at the exact right moment within that rhythm. They work in perfect harmony to ensure your engine runs smoothly, efficiently, and with maximum power. Without either, your engine’s performance would suffer drastically, or it wouldn’t run at all!

Now that we’ve cleared up the camshaft position sensor vs crankshaft position sensor debate, let’s look at some of the best replacement options available.

Top 10 Camshaft and Crankshaft Position Sensor Replacements

1. Set of 3 Camshaft Crankshaft Position Sensor Compatible…

Set of 3 Camshaft Crankshaft Position Sensor Compatible...

This comprehensive kit is a fantastic option for owners of various Infiniti and Nissan models, providing all three crucial sensors in one convenient package. If you’re tackling multiple sensor-related issues or simply want to refresh your engine’s timing system for peace of mind, this set offers a direct fit replacement designed to restore optimal vehicle performance and address common issues like intermittent stalling or hard starts. The manufacturer stands behind their product with an 18-month warranty, adding a layer of confidence to your purchase.

  • Key Features:

    • Comprehensive 3-piece kit: 2 camshaft sensors, 1 crankshaft sensor.
    • Wide compatibility for Infiniti G35, FX35, Nissan 350Z, Altima, Maxima, Murano, and more.
    • Direct OEM replacement part numbers (e.g., PC499, PC460, PC461).
    • Designed to regulate spark timing and fuel injector operation.
    • Plug-in installation method for ease of use.
    • 18-month worry-free warranty.
  • Pros:

    • Excellent value with all three common sensors in one kit.
    • Specific OEM part number cross-references ensure accurate fitment.
    • Addresses multiple potential sensor failure points simultaneously.
    • Generous warranty for customer assurance.
  • Cons:

    • Highly vehicle-specific; double-check compatibility thoroughly.
    • May include sensors you don’t immediately need, if only one is faulty.
  • User Impressions: Customers frequently praise the perfect fit and the immediate resolution of engine codes and performance issues after installation. Many found the installation straightforward, appreciating the convenience of a complete set for their specific Nissan/Infiniti models.

  • See it on Amazon here

2. higherbro 2pcs Crankshaft + Camshaft Position Sensor Kits…

higherbro 2pcs Crankshaft + Camshaft Position Sensor Kits...

For those driving specific Toyota, Lexus, Pontiac, or Scion models, this 2-piece kit from higherbro offers a targeted solution for common sensor needs. It includes both the crankshaft and camshaft position sensors, providing a cost-effective way to address issues related to engine timing and performance. The “One Year Quality Guarantee” gives buyers confidence in their purchase, highlighting the brand’s commitment to reliability.

  • Key Features:

    • 2-piece kit: 1 crankshaft sensor, 1 camshaft sensor.
    • Compatible with specific 2001-2013 Toyota, Lexus, Pontiac, and Scion models.
    • Designed for direct replacement.
    • One-year quality guarantee.
  • Pros:

    • Convenient bundle for a common sensor pairing.
    • Specific fitment details help ensure compatibility.
    • Affordable option for sensor replacement.
  • Cons:

    • Very limited vehicle fitment outside of the listed models.
    • May not be suitable if only one specific sensor is needed.
  • User Impressions: Users typically find these sensors to be a reliable and affordable fix for their compatible vehicles. The ease of installation is often mentioned, along with the satisfaction of clearing check engine lights related to these components.

  • See it on Amazon here

3. A-Premium Camshaft Crankshaft Position Sensor Compatible…

A-Premium Camshaft Crankshaft Position Sensor Compatible...

This A-Premium kit is another excellent choice for Infiniti and Nissan owners seeking to replace both camshaft and crankshaft position sensors. What makes this offering stand out is A-Premium’s reputation for quality and their one-year unlimited-mileage guarantee. This provides significant peace of mind, knowing you’re backed by a solid warranty. The detailed reference numbers and specifications also make it easy to confirm compatibility, ensuring a proper fit for your vehicle.

  • Key Features:

    • 3-piece kit: 2 camshaft sensors, 1 crankshaft sensor.
    • Compatible with various Infiniti FX35, G35, M35, and Nissan 350Z, Altima, Maxima, Murano models.
    • Detailed reference numbers for accurate cross-referencing.
    • 3-pin blade terminal quantity and type.
    • One-year unlimited-mileage guarantee.
  • Pros:

    • Comprehensive kit covering multiple sensor replacement needs.
    • Strong warranty offering by A-Premium.
    • High level of detail in fitment and reference numbers.
    • Known brand for automotive aftermarket parts.
  • Cons:

    • Fitment is highly specific to certain Nissan/Infiniti V6 3.5L engines.
    • Professional installation might be recommended for those unfamiliar with sensor replacement.
  • User Impressions: Customers appreciate the precise fit and functionality, noting that these sensors often resolve persistent engine issues. The robust packaging and the reliable A-Premium brand reputation contribute to positive feedback.

  • See it on Amazon here

4. ApplianPar Engine Camshaft and Crankshaft Position Sensor…

ApplianPar Engine Camshaft and Crankshaft Position Sensor...

This ApplianPar kit offers a convenient 3-piece solution for specific Acura TSX and Honda Accord/Element models. It includes all the necessary camshaft and crankshaft position sensors to get your vehicle’s engine timing back in sync. With multiple interchangeable part numbers listed, it’s designed to be a direct replacement, simplifying the repair process for DIYers. It’s a solid choice if you’re looking for a complete set for these particular Honda/Acura applications.

  • Key Features:

    • 3-piece kit: 2 camshaft sensors, 1 crankshaft sensor.
    • Replaces multiple OEM part numbers (e.g., PC478, PC619, 37500-RAA-A01).
    • Compatible with Acura TSX (2004-2008) and Honda Accord/Element (2003-2011).
  • Pros:

    • Complete kit for targeted Honda/Acura applications.
    • Multiple OEM part number replacements simplify purchasing.
    • Cost-effective way to replace all relevant sensors at once.
  • Cons:

    • Very limited in terms of vehicle compatibility.
    • No specific warranty duration mentioned in the provided features.
  • User Impressions: Users report that these sensors typically fit perfectly and restore engine performance, eliminating check engine light codes. The affordability of the kit is a common highlight among satisfied customers.

  • See it on Amazon here

5. ApplianPar Crankshaft Position Sensor and Camshaft Position…

ApplianPar Crankshaft Position Sensor and Camshaft Position...

Another offering from ApplianPar, this 2-piece kit focuses on a different set of Honda and Acura models, including Accord, Odyssey, Pilot, Ridgeline, MDX, RL, and TL. If your vehicle falls within these ranges and you need to replace both your crankshaft and camshaft position sensors, this kit provides a direct fit solution. It’s a straightforward package that aims to get your engine’s vital signs back in order without breaking the bank.

  • Key Features:

    • 2-piece kit: 1 crankshaft sensor, 1 camshaft sensor.
    • Compatible with various Honda Accord, Odyssey, Pilot, Ridgeline, and Acura MDX, RL, TL models.
    • Replaces specific OEM part numbers (e.g., 37840-PGE-A11, 37500-RCA-A01).
  • Pros:

    • Convenient pairing of crankshaft and camshaft sensors.
    • Specific fitment for popular Honda/Acura vehicles.
    • Direct replacement for listed OEM part numbers.
  • Cons:

    • Fitment is restricted to the models and years listed.
    • Lack of a stated warranty may concern some buyers.
  • User Impressions: Customers generally find this kit to be a good value, effectively resolving their engine’s rough running or starting issues. The direct compatibility with the specified models is frequently praised.

  • See it on Amazon here

6. A-Premium Engine Camshaft Position Sensor Compatible with…

A-Premium Engine Camshaft Position Sensor Compatible with...

Unlike some of the previous kits, this A-Premium product specifically offers a single camshaft position sensor. It’s designed for a wide range of GM vehicles, including various Buick, GMC, Pontiac, Saab, Saturn, and Chevrolet models with 2.0L, 2.2L, and 2.4L engines. If you’ve pinpointed your issue specifically to the camshaft position sensor and own one of these vehicles, this sensor promises precise ignition timing and a smooth driving experience, backed by A-Premium’s reliable one-year unlimited-mileage guarantee.

  • Key Features:

    • Single camshaft position sensor.
    • Extensive compatibility with numerous GM models (Buick, Chevy, GMC, Pontiac, Saab, Saturn).
    • References multiple OEM part numbers (e.g., 917720, 12577245).
    • Designed to upgrade engine performance and maintain precise ignition timing.
    • 3-pin connector.
    • One-year unlimited-mileage guarantee.
  • Pros:

    • Wide range of GM vehicle compatibility for a single sensor.
    • Strong A-Premium brand warranty.
    • A good choice if only the camshaft sensor needs replacing.
  • Cons:

    • Does not include the crankshaft position sensor or other camshaft sensors.
    • Requires careful fitment verification due to wide model range.
  • User Impressions: Owners of compatible GM vehicles report that this sensor effectively resolves check engine light issues and restores proper engine operation. The quality and direct fit are often highlighted as positive aspects.

  • See it on Amazon here

7. Intake & Exhaust Camshaft Position Actuator with Crankshaft…

Intake & Exhaust Camshaft Position Actuator with Crankshaft...

This comprehensive kit goes beyond just the position sensors, offering a robust solution for a wide array of GM vehicles experiencing engine timing and performance issues. It includes both intake and exhaust camshaft position actuators (also known as VVT solenoids), along with the crankshaft and camshaft position sensors. This makes it an ideal choice if your diagnostic points to a broader problem involving variable valve timing components in addition to sensor failures. The 1-year manufacturer warranty adds to its appeal.

  • Key Features:

    • Comprehensive kit: Intake & Exhaust Camshaft Position Actuators, Crankshaft Sensor, Camshaft Sensor.
    • Wide compatibility for various Buick, Chevy, GMC, Pontiac, and Saturn models (2.0L, 2.2L, 2.4L engines).
    • Replaces numerous OEM part numbers for actuators and sensors.
    • Aims to restore optimal engine timing and performance.
    • 1-year manufacturer warranty.
  • Pros:

    • Extremely comprehensive kit for multiple related components.
    • Excellent value if replacing VVT solenoids and sensors.
    • Broad GM vehicle fitment.
    • Manufacturer warranty provided.
  • Cons:

    • May be overkill if only a single sensor is faulty.
    • Installation might be more complex due to multiple component replacements.
  • User Impressions: Customers who installed this kit generally report significant improvements in engine smoothness, power delivery, and the elimination of various diagnostic trouble codes. The all-in-one nature of the kit is frequently appreciated.

  • See it on Amazon here

8. A-Premium 3-PC Engine Camshaft Crankshaft Position Sensors…

A-Premium 3-PC Engine Camshaft Crankshaft Position Sensors...

This A-Premium 3-piece kit is specifically designed for a vast range of Ford, Lincoln, and Mercury vehicles, primarily those with SOHC engines. It includes two camshaft position sensors and one crankshaft position sensor, offering a complete set for critical engine timing. With an extensive list of compatible models from Crown Victoria to F-Series trucks and Mustangs, this kit aims to provide a direct, reliable replacement to resolve common sensor-related engine issues, backed by A-Premium’s reputation for quality.

  • Key Features:

    • 3-piece kit: 2 camshaft sensors, 1 crankshaft sensor.
    • Extensive compatibility for Ford, Lincoln, Mercury SOHC engines (e.g., F-150, Expedition, Crown Victoria, Mustang).
    • Direct OE replacement with numerous cross-referenced part numbers.
    • 2-pin blade terminal type.
  • Pros:

    • Comprehensive solution for many Ford/Lincoln/Mercury applications.
    • Direct fitment ensures ease of installation.
    • Known brand for reliable aftermarket parts.
  • Cons:

    • Strictly for SOHC engines, so verify your engine type.
    • No specific warranty information provided in the features, though A-Premium generally offers one.
  • User Impressions: Ford enthusiasts frequently report that these sensors are a perfect match, helping to clear persistent engine codes and restore consistent engine performance. The value of getting all three sensors in one package is a big plus.

  • See it on Amazon here

9. MOTOKU Camshaft and Crankshaft Position Sensor for Cadillac…

MOTOKU Camshaft and Crankshaft Position Sensor for Cadillac...

This MOTOKU kit offers both camshaft and crankshaft position sensors for a diverse range of GM vehicles, including many Cadillac, Chevrolet, GMC, Hummer, Isuzu, and Pontiac models, primarily focusing on truck and SUV applications. If you’re experiencing engine issues in one of these robust vehicles and suspect sensor failure, this kit provides a direct replacement solution. The detailed list of compatible vehicles and OEM part numbers helps ensure you get the right fit.

  • Key Features:

    • Includes both camshaft and crankshaft position sensors.
    • Extensive compatibility with various Cadillac, Chevy, GMC, Hummer, Isuzu, Pontiac models.
    • Replaces a wide array of OEM part numbers (e.g., PC278T, PC273T, 12555566).
  • Pros:

    • Good solution for a wide range of GM truck/SUV applications.
    • Replaces critical engine sensors.
    • Detailed cross-reference for OEM part numbers.
  • Cons:

    • No explicit warranty information provided.
    • Verify your specific sub-model/engine size carefully.
  • User Impressions: Many users find this kit to be an effective and affordable repair for their large GM vehicles. They often highlight the quick resolution of common engine problems like rough idling or failure to start.

  • See it on Amazon here

10. Set of 2 Engine Camshaft Position Sensor Compatible with…

Set of 2 Engine Camshaft Position Sensor Compatible with...

If your diagnostic points specifically to camshaft sensor issues in your Infiniti, Nissan, or Suzuki, this 2-piece camshaft position sensor set is a perfect fit. It provides both Bank 1 and Bank 2 camshaft sensors, designed for direct replacement in a wide array of V6 3.5L and V6 4.0L engines. Made with high-quality construction and offering an 18-month warranty, this kit from A-NAFTULY ensures reliable functionality and aims to resolve common camshaft-related engine problems, allowing for precise ignition timing.

  • Key Features:

    • 2-piece kit: Bank 1 and Bank 2 camshaft position sensors.
    • Wide compatibility for Infiniti, Nissan, and Suzuki V6 3.5L and 4.0L engines.
    • Direct OEM replacement with numerous part numbers (e.g., 907-716, 917-704).
    • High-quality construction for long-lasting performance.
    • Plug-in installation.
    • 18-month worry-free warranty.
  • Pros:

    • Specific solution for camshaft sensor replacements.
    • Comprehensive kit for both camshaft banks.
    • Generous 18-month warranty.
    • High-quality construction emphasized by the manufacturer.
  • Cons:

    • Does not include the crankshaft position sensor.
    • Vehicle specific; ensure exact model match.
  • User Impressions: Customers report that these camshaft sensors are a perfect direct replacement, clearing check engine lights and restoring smooth engine operation. The long warranty period is a plus for peace of mind.

  • See it on Amazon here

Frequently Asked Questions (FAQ)

Q1: What are the primary differences in function between a camshaft position sensor vs crankshaft position sensor?
A1: The crankshaft position sensor (CKP) primarily monitors the engine’s speed (RPM) and the exact position of the crankshaft (and thus the pistons), which is crucial for ignition timing and fuel injection. The camshaft position sensor (CPS) monitors the camshaft’s position, which controls valve timing and helps the ECU identify which cylinder is on its compression stroke for precise fuel and spark delivery. They work in tandem to ensure accurate engine timing.

Q2: Can I drive my car with a faulty camshaft or crankshaft position sensor?
A2: While your car might technically run with a failing sensor, it’s strongly advised against driving it. A faulty sensor can lead to significant engine performance issues, including stalling, misfires, reduced power, and poor fuel economy. Continuing to drive could potentially cause further damage to other engine components, such as the catalytic converter, due to incorrect fuel mixtures or ignition timing.

Q3: Are camshaft and crankshaft position sensors interchangeable?
A3: No, absolutely not. Despite both being “position sensors,” they are designed for very specific locations and functions within the engine. They have different physical designs, mounting points, and produce different signals tailored to the component they monitor. Installing the wrong sensor will not only fail to work but could potentially damage the sensor or the engine’s ECU.

Q4: What are the common symptoms of a bad camshaft or crankshaft position sensor?
A4: Common symptoms include the “Check Engine” light illuminating, difficulty starting (especially prolonged cranking), engine stalling (especially when warm or at low speeds), rough idling, engine misfires, reduced engine power, poor acceleration, and fluctuating RPMs.

Q5: How difficult is it to replace these sensors myself?
A5: The difficulty varies greatly depending on your vehicle’s make and model. Some sensors are easily accessible, requiring only basic tools and a few minutes, while others can be deeply buried in the engine compartment, requiring removal of other components. It’s best to consult your vehicle’s repair manual or look up specific guides for your car before attempting the replacement. If you’re not comfortable, a professional mechanic is always recommended.

Q6: How long do camshaft and crankshaft position sensors typically last?
A6: These sensors are generally quite durable and can last the lifetime of the vehicle. However, like any electronic component exposed to engine heat and vibrations, they can eventually fail. Factors like extreme temperatures, electrical shorts, or physical damage can shorten their lifespan. There’s no fixed replacement interval; they are usually replaced when symptoms of failure appear.

Q7: Can a faulty sensor lead to a car not starting at all?
A7: Yes, absolutely. Especially a completely failed crankshaft position sensor can prevent the engine from starting. The ECU relies on the CKP signal to know when and how to fire the spark plugs and inject fuel. Without this critical input, the engine may crank endlessly without catching, as it doesn’t know where the pistons are. A camshaft position sensor failure can also cause no-start conditions, though it’s less common for it to be the sole reason for a complete no-start than a CKP failure.

Conclusion

Understanding the distinct yet complementary roles of the camshaft position sensor vs crankshaft position sensor is crucial for any car owner. These small but mighty components are the unsung heroes of your engine’s precise operation, working in tandem to keep your ride running smoothly and efficiently. If you’re experiencing any of the common symptoms of failure, don’t put off getting them checked out. Replacing a faulty sensor can be a straightforward and cost-effective fix that saves you from more significant engine troubles down the road.

We hope this guide has helped clarify the differences and provided you with some excellent product options to consider. Always remember to double-check compatibility with your specific vehicle before making a purchase!

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