10 Top 03 Nissan Altima Camshaft Position Sensor Replacements Reviewed

If you own a trusty 2003 Nissan Altima, you know it’s a fantastic car, but like any vehicle, it’s not immune to part wear and tear. One critical component that can really throw a wrench in your engine’s smooth operation is the camshaft position sensor. This little marvel plays a huge role in your engine’s timing, telling your car’s computer exactly what the camshafts are up to. When it goes bad, you’ll feel it! Symptoms like a stubborn check engine light, rough idling, or even a complete no-start situation can all point to a faulty sensor.

Don’t sweat it, though! Replacing an 03 Nissan Altima camshaft position sensor is a common fix, and there are plenty of reliable aftermarket options out there that can get your ride running like new again without breaking the bank. But with so many choices, how do you pick the right one? We’ve done the legwork for you, diving deep into 10 popular replacement sensors to help you make an informed decision. Let’s get your Altima back on the road with precision engine timing!

What to Look for in a Camshaft Position Sensor

Before we jump into the reviews, here’s a quick rundown of what to keep in mind when shopping for a new camshaft position sensor:

• Compatibility: This is king! Make sure the sensor specifically fits your 2003 Nissan Altima’s engine (most commonly the 3.5L V6, but some 2.5L 4-cylinder models also exist).
• Quality & Reliability: Look for sensors made with durable materials and from reputable brands. Aftermarket parts can be hit or miss, so customer reviews are your friend.
• OEM Specifications: A good replacement sensor should meet or exceed Original Equipment Manufacturer (OEM) specs for accurate readings and optimal engine performance.
• Warranty: A solid warranty gives you peace of mind in case of early sensor failure.
• Ease of Installation: While installation often requires some DIY know-how, a sensor that’s a direct plug-and-play replacement is always a bonus.

Now, let’s dive into our top picks for the 03 Nissan Altima camshaft position sensor!

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Product Reviews

1. A-Premium Camshaft Position Sensor Left & Right

This A-Premium set offers a comprehensive solution for your VQ35DE engine, providing both left and right camshaft position sensors. It’s designed to be a direct replacement for multiple Nissan and Infiniti models, including your 03 Nissan Altima 3.5L, making it a convenient two-in-one package for addressing common sensor issues. The focus here is on precise fitment and reliable performance, ensuring your engine’s ECU receives accurate timing data for optimal operation.

• Key Features:
  • Compatible with Nissan 350Z, Altima (2002-2006 V6 3.5L), Maxima, Murano, Quest, Frontier, NV series, Pathfinder, Xterra.
  • Also fits Infiniti FX35, G35, I35, M35 (V6 3.5L models).
  • Includes both Bank 1 (right) and Bank 2 (left) sensors.
  • 3-pin blade terminal type.
  • OE replacement brand new sensor.
• Pros:
  • Includes both camshaft sensors, often needed together.
  • Broad compatibility with many Nissan/Infiniti V6 3.5L engines.
  • One-year unlimited-mileage guarantee for peace of mind.
  • Direct fit for easy installation.
• Cons:
  • May not be necessary to replace both sensors if only one is faulty.
• User Impressions: Many users appreciate the convenience of getting both sensors in one package, reporting successful installations and resolution of check engine lights and rough running conditions. The direct fit is frequently praised.
  See it on Amazon here

2. 2Pcs Camshaft Position Sensor Compatible with Infiniti FX35…

Similar to the A-Premium offering, this 2-piece set from IFATRUNK provides both Bank 1 and Bank 2 camshaft position sensors, making it a smart choice if you’re looking to replace both simultaneously in your 03 Nissan Altima V6. This set emphasizes plug-and-play installation and aims to directly address common symptoms of a failing sensor, such as hard starting or erratic engine behavior, by providing accurate data to the engine control unit.

• Key Features:
  • Compatible with 2002-2006 Nissan Altima 3.5L, 350Z, Maxima, Murano, Quest.
  • Also compatible with various Infiniti 3.5L models (G35, I35, M35, FX35).
  • Direct replacement for original cam shaft sensors.
  • Aims to resolve issues like hard starting, weak acceleration, and rough idle.
• Pros:
  • Includes both sensors, ideal for comprehensive replacement.
  • Wide compatibility with Nissan’s VQ35DE engine family.
  • Plug-and-play design for straightforward installation.
  • Dedicated customer support available for issues.
• Cons:
  • Specific warranty details aren’t explicitly stated beyond customer support.
• User Impressions: Customers often find these sensors to be an effective and affordable solution for their Nissan V6 engines. The ease of installation is a recurring positive comment, with many reporting immediate improvements in engine smoothness and performance.
  See it on Amazon here

3. OYEAUTO Camshaft Position Sensor 2pcs 23731-6J90B…

OYEAUTO offers a reliable 2-piece set of camshaft position sensors, specifically designed to meet or exceed OE specifications for a wide range of Nissan and Infiniti V6 3.5L models, including your 03 Nissan Altima. This set is particularly focused on preventing engine damage by ensuring accurate timing signals, and it comes with a strong 12-month warranty, offering good value and peace of mind for DIYers and mechanics alike.

• Key Features:
  • Replaces multiple OEM part numbers (e.g., 23731-6J90B, PC460, PC461).
  • Compatible with 2002-2006 Nissan Altima 3.5L, 350Z, Maxima, Murano, Quest, etc.
  • Also fits Infiniti FX35, G35, I35, M35 3.5L.
  • Designed to prevent engine damage from faulty readings.
  • Helps resolve check engine light, stalled engine, and rough idle.
• Pros:
  • Comprehensive 2-piece set for both banks.
  • Strong 12-month warranty provides good protection.
  • Designed to meet or exceed OE specifications.
  • Addresses common symptoms of a failing sensor.
• Cons:
  • While a good warranty, some premium brands offer longer terms.
• User Impressions: Users report that these sensors are a good value, often resolving persistent check engine lights and performance issues. The stated compatibility and the included warranty are frequently cited as reasons for purchase.
  See it on Amazon here

4. 3Pcs Camshaft Crankshaft Position Sensor Compatible with…

This comprehensive 3-piece kit from IFATRUNK goes a step further, providing not just the two camshaft position sensors but also the crankshaft position sensor. For your 03 Nissan Altima V6, this is a particularly attractive option because these three sensors often fail around the same time and work in conjunction to control engine timing. Replacing them all at once can save you future headaches and ensure complete synchronization.

• Key Features:
  • Includes 2 camshaft position sensors (Bank 1 & 2) and 1 crankshaft position sensor.
  • Compatible with 2002-2006 Nissan Altima 3.5L, 350Z, Maxima, Murano, Quest.
  • Also fits various Infiniti 3.5L models (G35, I35, M35, FX35).
  • Direct replacement, plug-and-play installation.
  • Aims to correct issues like hard starting and abnormal engine shaking.
• Pros:
  • Complete sensor replacement kit (camshafts and crankshaft).
  • Excellent value if all three sensors need replacing.
  • Wide compatibility across the Nissan VQ35DE platform.
  • Easy to install for DIY enthusiasts.
• Cons:
  • May be overkill if only one specific sensor is confirmed faulty.
• User Impressions: Many buyers appreciate the convenience and value of replacing all three critical timing sensors at once. Users often report a significant improvement in engine stability and responsiveness after installing this kit.
  See it on Amazon here

5. BDFHYK PC775 917-740 Cam Camshaft Position Sensor 2PCS for…

Important Note: While this product is a camshaft position sensor, it is not compatible with the 2003 Nissan Altima 3.5L V6 (VQ35DE engine), which is the primary focus of this article. Its compatibility lists Altima models from 2007-2018. It’s a good sensor for the vehicles it does fit, featuring high-quality chips and a robust seal, backed by a generous 24-month customer service policy, but be sure to verify your specific engine model.

• Key Features:
  • Interchangeable with various OEM part numbers (e.g., 23731JA11A, PC775).
  • Compatible with NISSAN Altima 2007-2018, 350Z (2008-2009), Maxima (2009-2018), Murano (2008-2018), etc.
  • Features high-quality chips (Allegro, Infineon, NXP) and Fluorine Rubber seals.
  • Comes with 24-month customer service/replacement policy.
• Pros:
  • Uses high-quality internal components for potentially superior performance.
  • Excellent 24-month warranty/customer service policy.
  • Robust construction with high-temp, abrasion-resistant seals.
• Cons:
  • NOT compatible with 2003 Nissan Altima 3.5L V6. This is a critical point for our target audience.
  • Only for later model year Nissan V6 engines.
• User Impressions: For those who own the compatible models, this sensor is often well-received for its reported quality and the strong warranty. Users note it resolves their specific engine codes and issues.
  See it on Amazon here

6. Zhermik Camshaft Crankshaft Position Sensor Left and Right…

Zhermik provides a comprehensive set of two camshaft sensors and one crankshaft sensor, mirroring the utility of option #4. This kit is specifically tailored for the V6 3.5L engines found in your 03 Nissan Altima, as well as several other popular Nissan and Infiniti models. By offering all three crucial timing sensors, it aims to provide a complete solution for restoring precise engine timing and resolving a range of diagnostic trouble codes.

• Key Features:
  • Includes 2 camshaft position sensors (left and right) and 1 crankshaft sensor.
  • Fits 2002-2006 Nissan Altima 3.5L, 350Z, Maxima, Murano, Quest.
  • Also compatible with Infiniti FX35, G35, I35, M35 3.5L.
  • Replaces various OEM part numbers for direct fit.
  • Comes with a 12-month warranty.
• Pros:
  • Comprehensive kit for all critical timing sensors.
  • Direct compatibility with the 03 Nissan Altima 3.5L V6.
  • Good 12-month warranty.
• Cons:
  • May not be needed if only one specific sensor is faulty.
• User Impressions: Customers often find this kit to be a convenient and cost-effective way to address multiple sensor-related issues. The full set is appreciated by those performing a more extensive tune-up or troubleshooting complex engine problems.
  See it on Amazon here

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

Important Note: This A-Premium sensor is primarily compatible with Nissan Altima 2.5L L4 engines (2002-2006) and other specific Nissan/Suzuki models, not the 3.5L V6 found in many 2003 Nissan Altima models. If you have the 2.5L 4-cylinder Altima, this could be a good fit. It’s designed as an OE replacement, offering straightforward installation and A-Premium’s standard warranty.

• Key Features:
  • Compatible with Nissan Altima 2002-2006 (specifically L4 2.5L), Frontier, NP300, Sentra, Urvan, X-Trail.
  • Also fits Suzuki Equator.
  • Replaces PC464, 237316N202, and other relevant OEM part numbers.
  • 3-pin blade terminal.
  • One-year unlimited-mileage guarantee.
• Pros:
  • Direct OE replacement for specified models.
  • Comes with a reliable one-year warranty.
  • A-Premium is a well-known aftermarket brand.
• Cons:
  • NOT for the 3.5L V6 2003 Nissan Altima. This is a critical distinction.
  • Only a single sensor, not a set.
• User Impressions: For owners of the compatible 4-cylinder Altima and other listed vehicles, this sensor is often reported to be a good value, effectively resolving check engine light issues and restoring proper engine function.
  See it on Amazon here

8. Zhermik Camshaft Position Sensor Left and Right Compatible…

This Zhermik 2-piece set focuses solely on the two camshaft position sensors for the V6 3.5L engine, making it an ideal choice if you’ve diagnosed issues with just these components in your 03 Nissan Altima. It covers a wide range of Nissan and Infiniti models that use the VQ35DE engine, ensuring broad compatibility and a direct fit. The product emphasizes replacing both left and right sensors for optimal engine timing.

• Key Features:
  • Includes both Bank 1 (right) and Bank 2 (left) camshaft sensors.
  • Fits 2002-2006 Nissan Altima 3.5L, 350Z, Maxima, Murano, Quest, Frontier (4.0L), NV series (4.0L), Pathfinder (4.0L), Xterra (4.0L).
  • Also fits Infiniti FX35, G35, I35, M35 3.5L.
  • Replaces multiple OEM part numbers (e.g., 237315M010, 237317Y000).
  • 12-month warranty.
• Pros:
  • Specifically targets the two camshaft sensors for the V6.
  • Excellent compatibility with various Nissan and Infiniti V6 engines.
  • 12-month warranty offers peace of mind.
  • Direct fitment for easy installation.
• Cons:
  • Doesn’t include the crankshaft position sensor, if that’s also needed.
• User Impressions: Customers often find this dual-sensor pack to be a straightforward and effective solution for their VQ35DE-powered vehicles. Many report successful resolution of engine codes and improved idling.
  See it on Amazon here

9. A-Premium 2-PC Engine Camshaft Position Sensor Compatible…

Important Note: This A-Premium 2-piece set of sensors is for L4 (4-cylinder) 2.4L and 2.5L Nissan Altima models (2001-2006) and other specific L4 Nissan/Suzuki vehicles. It is not compatible with the 3.5L V6 2003 Nissan Altima, which is typically the “03 Nissan Altima” implied for performance parts discussions. Despite the mislabeling in the product title as “Camshaft Position Sensor,” the features explicitly state “2x Crankshaft Position Sensors,” which is confusing. Based on the reference number (PC464) and L4 vehicle fitment, these are likely camshaft sensors for the 4-cylinder models.

• Key Features:
  • Compatible with Nissan Altima 2001-2001 L4 2.4L, Altima 2002-2006 L4 2.5L, Frontier, Sentra.
  • Also fits Suzuki Equator L4 2.5L.
  • Replaces PC464, 237316N202, and other relevant OEM part numbers.
  • 3-pin blade terminal.
  • One-year unlimited-mileage guarantee.
• Pros:
  • Good option for 4-cylinder Altima owners.
  • Comes as a 2-piece set, potentially useful if both L4 cam sensors are needed.
  • Backed by A-Premium’s one-year warranty.
• Cons:
  • NOT compatible with the 3.5L V6 2003 Nissan Altima.
  • Confusing product description regarding “Camshaft” vs. “Crankshaft” sensors.
• User Impressions: Owners of the compatible 4-cylinder Nissan models have found these sensors to be a cost-effective and functional replacement, helping clear engine codes and restore normal operation.
  See it on Amazon here

10. A-Premium Camshaft Crankshaft Position Sensor Compatible…

This comprehensive A-Premium kit is another fantastic option for your 03 Nissan Altima V6, combining both camshaft position sensors and the crucial crankshaft sensor into one package. It’s designed to ensure your VQ35DE engine runs with precise timing, addressing any issues stemming from faulty sensor signals. This bundled approach simplifies the buying process and ensures all related components are replaced with high-quality, direct-fit parts.

• Key Features:
  • Includes 2 camshaft position sensors and 1 crankshaft position sensor.
  • Compatible with 2002-2006 Nissan Altima 3.5L, 350Z, Maxima, Murano, Quest.
  • Also fits Infiniti FX35, G35, I35, M35 3.5L.
  • Replaces multiple OEM part numbers for all three sensors.
  • 3-pin blade terminal type.
  • One-year unlimited-mileage guarantee.
• Pros:
  • Complete sensor solution for critical engine timing.
  • Direct fit for the 03 Nissan Altima V6 and many other VQ35DE applications.
  • Backed by A-Premium’s solid one-year warranty.
  • Convenient bundled package.
• Cons:
  • More expensive upfront if you only need one specific sensor.
• User Impressions: Many users praise this kit for its completeness and ease of installation. It’s a popular choice for those wanting to tackle all three related sensors at once, with positive reports on engine performance after replacement.
  See it on Amazon here

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Conclusion

Picking the right 03 Nissan Altima camshaft position sensor doesn’t have to be a headache. Whether you need just one, a pair for your camshafts, or a complete set including the crankshaft sensor, there’s a reliable option out there. For most 2003 Nissan Altima owners with the 3.5L V6 engine, options like the A-Premium dual cam sensor set, the IFATRUNK 3-piece kit, or the Zhermik combined sets offer excellent value and direct compatibility.

Always double-check the specific part numbers and vehicle fitment before purchasing, especially noting the difference between V6 and L4 models. Getting this sensor right means saying goodbye to that pesky check engine light and enjoying smooth, reliable engine performance once again. Happy driving!

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FAQ Section

Q1: What does a camshaft position sensor do in a 2003 Nissan Altima?
A1: The camshaft position sensor (CPS) monitors the rotational speed and position of the camshaft. This data is sent to the engine control unit (ECU), which uses it to synchronize fuel injection and ignition timing. Essentially, it helps the ECU know exactly when to fire the spark plugs and open/close the fuel injectors for each cylinder.

Q2: What are common symptoms of a bad 03 Nissan Altima camshaft position sensor?
A2: Common symptoms include the illumination of the “Check Engine Light” (with codes like P0340, P0345), rough idling, engine misfires, difficulty starting (especially when the engine is warm), reduced engine power or acceleration, and sometimes even stalling while driving. Your car might also experience poor fuel economy.

Q3: Can I replace the 03 Nissan Altima camshaft position sensor myself?
A3: For many 2003 Nissan Altima models (especially the V6), replacing the camshaft position sensors is a relatively straightforward DIY job. They are usually located on the cylinder heads. You’ll need basic tools, and it’s recommended to disconnect the battery first. However, if you’re uncomfortable working on your car, a professional mechanic can do it quickly.

Q4: Are there different camshaft position sensors for the 03 Nissan Altima V6 and L4 engines?
A4: Yes, absolutely! The 3.5L V6 (VQ35DE) engine typically uses two different camshaft position sensors (Bank 1 and Bank 2, sometimes referred to as ‘right’ and ‘left’), which have different part numbers from the sensor used in the 2.5L 4-cylinder (QR25DE) Altima engine. It’s crucial to buy the correct sensor for your specific engine type.

Q5: Should I replace my camshaft and crankshaft sensors at the same time?
A5: While not always strictly necessary, replacing both the camshaft and crankshaft position sensors (especially for the V6 models that have three sensors in total – two cam, one crank) is often recommended. These sensors work in tandem to provide timing data to the ECU, and if one is failing, the others might not be far behind. Replacing them all at once can save you labor costs in the future and ensure all timing signals are accurate.

Q6: How long do aftermarket camshaft position sensors usually last?
A6: The lifespan of an aftermarket camshaft position sensor can vary. High-quality aftermarket sensors from reputable brands can last for many years, often comparable to OEM parts. Cheaper sensors might fail sooner. Looking for products with a good warranty (like the 12-month or 1-year warranties mentioned above) can give you an indication of the manufacturer’s confidence in their product.

Q7: Will a bad camshaft position sensor prevent my car from starting?
A7: Yes, a failing or completely bad camshaft position sensor can absolutely prevent your 03 Nissan Altima from starting. Since the ECU relies on its signal to properly time fuel injection and ignition, without it, the engine might not know when to fire, leading to a no-start condition.