10 Best Subaru WRX Camshaft Position Sensors for Peak Performance
Is your beloved Subaru WRX feeling a bit off? Maybe you’re noticing a pesky “Check Engine” light, rough idling, or even stalling? These could all be classic signs of a failing Subaru WRX camshaft position sensor. This tiny but mighty component plays a crucial role in your engine’s precise timing and overall performance, telling your engine’s computer exactly where the camshaft is so it can synchronize the fuel injection and spark plug firing.
When this sensor goes bad, your WRX’s engine performance can suffer big time. Replacing it is often a straightforward fix that can bring your turbocharged beast back to life. But with so many options out there, how do you pick the right one? Don’t sweat it! We’ve done the legwork to bring you a comprehensive guide to the top Subaru WRX camshaft position sensor options on the market. We’ll break down their features, pros, and cons, and help you make an informed choice to get your WRX running smoothly again.
Understanding the Camshaft Position Sensor’s Role
Before we dive into the reviews, let’s quickly chat about why the camshaft position sensor (often called a cam sensor or CPS) is so important. Your WRX’s engine relies on precise timing. The camshaft controls when the intake and exhaust valves open and close, while the crankshaft dictates piston movement. The camshaft position sensor works in tandem with the crankshaft position sensor to send signals to your car’s Engine Control Unit (ECU). This allows the ECU to perfectly time the fuel delivery and ignition, ensuring efficient combustion, optimal power, and reduced emissions.
When a cam sensor starts acting up, the ECU gets confused, leading to various issues like:
* Illuminated “Check Engine” light
* Difficulty starting the car
* Engine misfires or rough idle
* Reduced fuel efficiency
* Sudden stalling or loss of power
Replacing a faulty sensor is a key step in diagnosing and resolving these common engine problems.
Our Top 10 Subaru WRX Camshaft Position Sensor Picks
Here are our detailed reviews of the best camshaft position sensors that fit various Subaru WRX models:
1. A-Premium Engine Camshaft Position Sensor (Ref #22056AA270)
This A-Premium sensor is a robust aftermarket option designed for a wide range of Subaru and Scion models, including the WRX. It’s built to meet or exceed OEM specifications, aiming to restore your engine’s precise timing and fuel efficiency. If you’re looking for a reliable replacement that won’t break the bank, this single sensor pack is a solid contender. It’s particularly noted for promoting stable engine operation and providing a smooth driving experience after installation.
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Key Features:
- Compatible with Subaru WRX 2015-2016 H4 2.0L/2.5L
- Reference Numbers: PC969, 5S13512, 22056AA270, SU00300414
- 3-pin blade terminal for direct fit
- Engineered for stable engine operation and precise ignition timing
- One-year unlimited-mileage guarantee
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Pros:
- Broad vehicle compatibility
- Designed for reliable ignition control and smooth acceleration
- Good value for an aftermarket part
- Backed by a strong warranty
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Cons:
- May require programming for some specific models (though not typically for WRX applications of this sensor)
- Aftermarket parts can sometimes have minor fitment variations
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User Impressions: Users appreciate its direct fit and how it often resolves “Check Engine” light issues related to the camshaft position sensor. Many report restored engine smoothness and responsiveness, making it a popular choice for DIYers.
2. Engine Camshaft Position Sensor 22056AA270 Compatible with…
Another strong contender for various Subaru models, this sensor (also referencing 22056AA270) offers a direct, plug-and-play replacement solution. Its focus on premium construction ensures durability and reliable operation, making it a smart choice if you want to avoid future sensor headaches. It directly addresses common symptoms of a faulty sensor, aiming to restore optimal spark timing and fuel injection.
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Key Features:
- Compatible with Subaru WRX 2015-2016 models
- Cross-references with OEM part number 22056AA270
- Plug-and-play installation, no extra programming needed
- Precision-engineered with industrial-grade materials for durability
- 18-month worry-free warranty
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Pros:
- Direct OEM replacement for easy installation
- High-quality construction for extended service life
- Excellent warranty period provides peace of mind
- Addresses common engine performance issues effectively
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Cons:
- Specific fitment needs to be double-checked against your WRX’s year/engine
- Not a multi-pack, so if you need more than one, you’ll order multiple
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User Impressions: Customers often highlight the ease of installation and the immediate positive impact on engine performance. Its robust build quality is frequently praised, leading to high satisfaction among those needing a reliable cam sensor.
3. Amrxuts J5T36071 CAM Camshaft Position Sensors for Subaru…
This Amrxuts sensor (part number J5T36071/22056-AA280) is specifically designed for newer Subaru models, including later WRX and WRX STI variants. It emphasizes extreme durability and straightforward installation. If your WRX falls into the 2017-2021 range and you’re seeking a robust aftermarket solution, this single unit could be exactly what you need to fix your engine timing issues.
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Key Features:
- Compatible with 2017-2021 Subaru WRX 2.0L/2.5L
- References J5T36071 and 22056-AA280
- Engineered for extreme durability and long life
- Direct fit design for easy installation
- 3-pin connector
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Pros:
- Strong focus on durability and longevity
- Designed for newer WRX models
- Easy, direct installation
- Backed by a 1-year warranty
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Cons:
- More specific fitment, check your year carefully
- Only a single sensor included
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User Impressions: Reviewers appreciate that this sensor fits perfectly into the specified newer Subaru models. They often note its solid build and that it successfully clears engine codes, allowing their WRX to run smoothly once again.
4. Amrxuts 2pcs 22056-AA280 CAM Camshaft Position Sensors for…
Essentially a twin pack of the previous Amrxuts sensor, this offering is perfect if your WRX requires multiple camshaft position sensors for replacement (some engines use more than one). It provides the same robust construction and direct fitment for 2017-2021 WRX models, offering better value if you’re planning a more comprehensive sensor refresh or have multiple sensors failing.
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Key Features:
- Includes two camshaft position sensors
- Compatible with 2017-2021 Subaru WRX 2.0L/2.5L
- References J5T36071 and 22056-AA280
- Emphasizes extreme durability and long service life
- Direct fit and easy installation
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Pros:
- Great value as a 2-piece set
- High-quality, durable construction
- Perfect for replacing multiple sensors simultaneously
- 1-year warranty for both sensors
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Cons:
- Still specific to newer WRX years
- Only provides 2 sensors, while some engines might need 4
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User Impressions: Buyers are generally very pleased with the cost-effectiveness of this two-pack. They report that both sensors perform reliably and are easy to install, making it a popular choice for those doing a more complete overhaul.
5. Subaru 22056AA140 OEM Camshaft Sensor
For the purists and those who prefer genuine parts, this is the original equipment manufacturer (OEM) Subaru camshaft sensor with part number 22056AA140. While the description is minimal, buying OEM ensures you’re getting the exact part designed and tested by Subaru for your vehicle. This particular sensor fits a range of older WRX and WRX STI models, providing the ultimate peace of mind in terms of compatibility and performance.
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Key Features:
- Genuine Subaru Part (OEM)
- Part Number: 22056AA140
- “Sensor Ay Camshaft”
- Designed and tested by Subaru for perfect fit and function
- Compatible with WRX 2012-2016 and WRX STI 2013-2019 (as indicated by other listings using this part number)
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Pros:
- Guaranteed perfect fit and function as an OEM part
- Highest level of compatibility and reliability
- No guesswork involved with installation or performance
- Often considered the most durable option
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Cons:
- Typically the most expensive option
- Minimal product description from the seller
- May not come with the same extensive warranty as some aftermarket options
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User Impressions: Owners who opt for OEM typically do so for the guaranteed fit and reliability. They report no issues with installation or performance, emphasizing the trust that comes with using genuine Subaru parts for their WRX.
6. XYZIL Car Engine Camshaft Position Sensor 22056-AA270…
The XYZIL camshaft position sensor is a comprehensive aftermarket solution that cross-references several OEM part numbers, including the popular 22056-AA270. What makes this offering stand out is its explicit recommendation to test your existing sensors and consider replacing all four if your WRX (or compatible model) uses multiple sensors, providing a complete solution to persistent engine issues. It directly addresses common symptoms like cranking without starting or intermittent stalling.
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Key Features:
- Compatible with Subaru WRX 2.0L 2015-2017 models
- Cross-references multiple part numbers: 22056-AA270, PC969, etc.
- Advises testing and potentially replacing all four sensors for optimal efficiency
- Designed to address common faulty sensor symptoms (cranking without starting, stalling)
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Pros:
- Extensive cross-reference list for broad compatibility
- Helpful advice on multi-sensor replacement
- Addresses key failure symptoms directly
- Cost-effective aftermarket option
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Cons:
- No specific warranty information provided in the features
- If you only need one, buying multiple might be unnecessary for some.
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User Impressions: Users appreciate the clear symptom descriptions and the advice to replace multiple sensors for a complete fix. Many found it to be an effective and economical way to resolve their WRX’s engine issues.
7. Garage-Pro 2-PC Camshaft Position Sensor Replacement for…
The Garage-Pro 2-piece set offers a convenient and economical solution for replacing camshaft position sensors in compatible Subaru models. While the description lists a broader range of Subaru vehicles, its interchangeability with part number 22056AA270 means it’s also highly relevant for 2015-2016 Subaru WRX owners. Getting two sensors in one pack is a definite advantage, especially if your engine utilizes multiple sensors or you want a spare.
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Key Features:
- Includes two camshaft position sensors
- Interchange Part Numbers: PC969, 22056AA270
- 3-Prong Blade Male Terminal; 1 Female Connector
- Direct fit replacement
- Ensures precise engine timing and optimal performance
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Pros:
- Good value with a 2-piece pack
- Direct fitment for easy installation
- Compatible with various Subaru models, including relevant WRX years
- Helps ensure precise engine timing
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Cons:
- Shipping may be split from multiple locations
- Warranty details are not explicitly mentioned
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User Impressions: Customers find this pack to be a cost-effective way to address their sensor needs. The direct fit and the fact that it comes with two sensors are frequently cited as major positives, making it easy to restore engine performance.
8. A-Premium Engine Camshaft Position Sensor (Ref #22056AA140)
Another excellent offering from A-Premium, this sensor is specifically compatible with the 22056AA140 OEM part number, making it suitable for a different range of WRX and WRX STI models than its 22056AA270 counterpart. If your WRX is from 2012-2016 or your WRX STI from 2013-2019 (specifically 2.5L H4 engines), this aftermarket option provides a direct fit with the reliability A-Premium is known for, all backed by their confidence-inspiring warranty.
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Key Features:
- Compatible with Subaru WRX 2012-2016 and WRX STI 2013-2019 (H4 2.5L)
- Reference Numbers: 22056AA140, 907847
- 3-pin blade terminal
- OE replacement, brand new sensor
- One-year unlimited-mileage guarantee
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Pros:
- Specific fitment for older WRX/WRX STI 2.5L models
- Direct fit for easy installation
- Strong warranty from a reputable aftermarket brand
- Helps ensure vehicle compatibility before purchase
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Cons:
- Not compatible with all WRX engine variants or years
- May not have the exact feel of an OEM part
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User Impressions: Users consistently praise A-Premium for reliable aftermarket parts that fit well and perform as expected. For those with the specified WRX and WRX STI models, this sensor is often reported to be a straightforward fix for engine timing issues.
9. HXYBBGS 4PCS 22056AA270 Engine Camshaft Position Sensor…
For those looking for the ultimate value or needing to replace all camshaft position sensors on their engine, this 4-piece set from HXYBBGS is an unbeatable option. Featuring the widely compatible 22056-AA270 part number, these sensors are designed to meet or exceed OE standards. If your WRX uses multiple sensors and you want to proactively replace them all for comprehensive engine health, this pack makes perfect sense.
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Key Features:
- Includes four engine camshaft position sensors
- OE Number: 22056-AA270 (and cross-references many others)
- Compatible with Subaru WRX 2015-2016 H4 2.0L/2.5L
- Manufactured with high-quality materials, tested by professionals
- Stable and reliable performance
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Pros:
- Exceptional value as a 4-pack
- Ideal for full engine sensor replacement or spares
- High-quality materials and professional testing
- Responsive after-sales service
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Cons:
- You might only need one or two sensors, making a 4-pack overkill for some
- May not be a familiar brand name to all buyers
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User Impressions: The primary draw for this product is the quantity and value. Users needing multiple sensors find this pack incredibly convenient and cost-effective, reporting that the sensors perform well and resolve their engine’s issues.
10. A-Premium Engine Camshaft Position Sensor (Ref #22056AA210)
Rounding out our list is another specialized A-Premium sensor, this time cross-referencing the 22056AA210 part number. This particular sensor has very specific fitments, often for exhaust side or rear bank applications on certain Impreza WRX STI models. If your WRX STI is an older model (2008-2015) and your diagnostic points to a sensor on the exhaust side, this reliable aftermarket option from A-Premium delivers OE performance and durability, backed by their standard warranty.
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Key Features:
- Compatible with specific Impreza WRX STI models (2008-2015) for exhaust/rear bank positions
- Reference Numbers: PC880, 22056AA210, SU00300413
- Outstanding quality and exceptional durability
- Meets OE performance requirements
- One-year unlimited-mileage guarantee
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Pros:
- Specialized fitment for particular WRX STI sensor locations
- High-quality construction for durability
- Reliable performance meeting OE standards
- Strong warranty for peace of mind
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Cons:
- Very specific fitment; requires careful verification for your exact WRX STI model and sensor location
- Not a general-purpose WRX sensor
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User Impressions: Buyers with the exact specified WRX STI models find this sensor to be a perfect fit and an effective solution for their exhaust-side sensor issues. A-Premium’s consistent quality is a recurring positive comment.
FAQs About Subaru WRX Camshaft Position Sensors
Q1: What does a camshaft position sensor do in my Subaru WRX?
A: The camshaft position sensor (CPS) monitors the rotational speed and position of the camshaft. It sends this data to the engine’s computer (ECU), which then uses this information, along with data from the crankshaft position sensor, to precisely time the fuel injection and spark plug firing. This ensures optimal engine performance, fuel efficiency, and emissions control.
Q2: What are the common symptoms of a bad Subaru WRX camshaft position sensor?
A: Common symptoms include the “Check Engine” light illuminating on your dashboard, difficulty starting your WRX (especially when warm), engine misfires, rough idling, reduced fuel economy, and unexpected stalling or loss of power while driving. You might also notice poor acceleration or your WRX going into “limp mode.”
Q3: Can I replace the Subaru WRX camshaft position sensor myself?
A: For many WRX 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. However, access can vary depending on your specific WRX year and engine, so it’s always best to consult your service manual or watch a tutorial video first. If you’re unsure, it’s always wise to consult a professional mechanic.
Q4: How many camshaft position sensors does a Subaru WRX have?
A: The number of camshaft position sensors in a Subaru WRX can vary by engine type and year. Many modern Subaru engines, especially those with Variable Valve Timing (AVCS), will have multiple sensors – often one for each camshaft (intake and exhaust) per cylinder bank. This means some WRX models could have two or even four sensors. It’s crucial to check your vehicle’s specific requirements.
Q5: Is it better to buy an OEM or aftermarket Subaru WRX camshaft position sensor?
A: OEM (Original Equipment Manufacturer) sensors are identical to the parts your WRX came with from the factory, offering guaranteed fitment and performance, but they are generally more expensive. Aftermarket sensors are typically more affordable and can offer comparable performance. The best choice depends on your budget and preference. Many high-quality aftermarket brands (like A-Premium) offer excellent reliability and come with good warranties.
Q6: Will replacing the camshaft position sensor fix my “Check Engine” light?
A: If the “Check Engine” light is illuminated specifically due to a fault code related to the camshaft position sensor (e.g., P0340, P0345), then replacing the faulty sensor will usually clear the code and turn off the light. However, it’s important to properly diagnose the issue first, as a “Check Engine” light can indicate many different problems.
Q7: How do I choose the right camshaft position sensor for my WRX?
A: First, identify your Subaru WRX’s exact year, model, and engine size (e.g., 2015 WRX 2.0L, 2017 WRX STI 2.5L). Then, compare this information with the “Vehicle Fitment” details provided for each sensor. Cross-referencing the OEM part number from your original sensor (if available) with the reference numbers listed for the new sensor is the most accurate way to ensure compatibility. Pay attention to whether it’s for intake or exhaust camshaft if your vehicle has multiple sensors.
Get Your WRX Running Right!
A failing Subaru WRX camshaft position sensor can be a real headache, impacting everything from your daily commute to your track-day performance. But as you’ve seen, there are plenty of high-quality replacement options available to get your car back in top form. Whether you prefer the tried-and-true reliability of OEM parts or the value offered by reputable aftermarket brands, you now have the insights to make an informed decision. Remember to always double-check the fitment for your specific WRX model and year before making a purchase. Happy driving!
