Nissan Maxima Engine Camshaft Position Sensor Guide (2002-2009)
Solving stalling, starting problems, and P0340/P0345 codes on your Maxima.
- Your Maxima has two camshaft sensors (Bank 1/rear, Bank 2/front) which have different shapes (straight vs. angled) and are not interchangeable.
- Hitachi is the original manufacturer; buying this brand is the most reliable aftermarket choice.
- Avoid the cheapest 'no-name' sensors, as many owners report they cause repeat failures.
- A recall on 2002-2003 models (NHTSA 03V455000) confirms these sensors are a known weak point.
Is Your Maxima Stalling or Hard to Start? It Could Be a Camshaft Sensor.
If your 2002-2009 Nissan Maxima suddenly stalls while driving, has trouble starting, or runs poorly, a failing camshaft position sensor is a very common cause. These sensors are a known weak point on the 3.5L VQ35DE engine. When one fails, it can leave you stranded. Fortunately, this is a repair most owners can do themselves with basic tools.
🎬 Follow this step-by-step walkthrough to replace the sensors yourself.Symptoms of a Bad Camshaft Position Sensor
- Check Engine Light: The most common sign, usually with codes P0340 (Bank 1) or P0345 (Bank 2). 🎬 Watch this video to see these specific codes diagnosed and fixed.
- Engine Stalls: The engine may shut off unexpectedly while driving, especially when it's warm.
- Hard Starting: The engine cranks for a long time before it finally starts, or it may not start at all.
- Rough Idle: The engine shakes or runs unevenly when stopped.
- Poor Acceleration: The car feels sluggish and lacks power when you press the gas.
- Reduced Fuel Economy: You may notice you're filling up the gas tank more often.
Known Issue: Factory Recall on Early Models
Nissan issued a recall (NHTSA Campaign ID: 03V455000) for 2002-2003 Maxima models due to faulty camshaft and crankshaft sensors. The original sensors had improper soldering that could cause them to fail, leading to engine stalling. While this recall is old, it confirms that these sensors were a problem area from the factory.
Choosing the Right Aftermarket Sensor
When shopping for a replacement, you'll find a wide range of prices and brands. For this specific part on your Maxima, brand choice matters a lot. Many owners report that cheap, no-name sensors fail quickly, forcing them to do the job twice.
Brand Quality Tiers
- Tier 1 - OEM Supplier (Recommended): Hitachi is the original equipment manufacturer for Nissan. Buying a Hitachi-branded sensor is the closest you can get to a genuine Nissan part without the dealer price tag. Denso is another high-quality Japanese OEM supplier. These are your safest bets for reliability.
- Tier 2 - Reputable Aftermarket: Brands like Delphi, NGK, and Standard Motor Products (SMP) have a long history of making quality electronic parts. They are a solid choice if an OEM supplier brand is not available.
- Tier 3 - Budget Brands: Brands like Dorman, URO Parts, and other lower-cost options offer significant savings. However, forum discussions frequently mention a higher rate of immediate or premature failure with these budget sensors for Nissans. If your budget is tight, they are an option, but be aware of the risk.
CRITICAL: Angled vs. Straight Connectors
Your Maxima has TWO camshaft sensors. One for Bank 1 (by the firewall) and one for Bank 2 (by the radiator). These two sensors are NOT the same. One has a straight electrical connector, and the other is angled. Before you order, you MUST check which one you are replacing or replace them as a set. Ordering the wrong shape is the most common mistake.
Cost Comparison
| Part Type | Estimated Cost (Single Sensor) |
|---|---|
| New OEM (Dealer) | $100 - $150 |
| New Aftermarket (OEM Supplier) | $50 - $90 |
| New Aftermarket (Budget) | $21 - $45 |
| Shop Labor | $75 - $150 |
Frequently Asked Questions
How many camshaft sensors does my 2002-2009 Maxima have?
Your Maxima has two camshaft position sensors. Bank 1 is located on the side of the engine near the firewall, and Bank 2 is on the side near the radiator.
Are the Bank 1 and Bank 2 sensors the same part?
No. This is very important. One sensor has a straight connector and the other has an angled connector. You must use the correct shape for the correct bank. Check the original part before ordering.
Should I replace both sensors at the same time?
It is good practice. The sensors are the same age and live in the same harsh environment. If one has failed, the other may not be far behind. Replacing them in pairs can save you from having to do the job again in a few months.
Why shouldn't I just buy the cheapest sensor available?
While saving money is tempting, Nissan's engine computer is very sensitive to the signal from these sensors. Many owners have found that cheap aftermarket sensors either don't work out of the box or fail within a few months, bringing back the original problem. Sticking with an OEM supplier like Hitachi is strongly recommended for long-term reliability.
Helpful Videos
Technical Specifications
OEM Part Numbers: 23731-AL61A 23731-6J90B 23731-JA11B 23731-6J906
The VQ35DE engine uses two physically distinct camshaft position sensors. One has an angled connector body, and the other has a straight connector body. Bank 1 (rear, by firewall) and Bank 2 (front, by radiator) use different shapes. Visual confirmation of the old part is required before ordering a replacement.
We Have This Part in Stock
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.
- Nissan Maxima:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Maxima Stalling or Hard to Start? It Could Be a Camshaft Sensor.
- Symptoms of a Bad Camshaft Position Sensor
- Known Issue: Factory Recall on Early Models
- Choosing the Right Aftermarket Sensor
- Brand Quality Tiers
- CRITICAL: Angled vs. Straight Connectors
- Cost Comparison
- Frequently Asked Questions
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