Engine Camshaft Position Sensor Guide for 2008-2013 Nissan Sentra
Fix stalling, hard starts, and poor performance in your Sentra by understanding and choosing the right camshaft position sensor.
- A failing camshaft sensor is a common cause of stalling, hard starts, and a P0340 code on 2008-2013 Sentras.
- Replacement is a simple DIY job, requiring only a 10mm socket and about 30 minutes.
- Hitachi is the original equipment (OEM) supplier; choosing this brand offers dealership quality at a lower price.
- Always clear the trouble codes with a scanner after replacing the sensor to ensure the car runs correctly.
Is Your Sentra Stalling or Hard to Start? It Could Be the Camshaft Sensor.
If you're experiencing sudden engine stalls, especially at low speeds, difficulty starting the engine, or a noticeable loss of power, a failing camshaft position sensor is a likely culprit. This sensor is a known failure point on many Nissan vehicles. When it fails, it can't send the correct signals to your car's computer, leading to a variety of driveability problems. The most common trouble code associated with a bad sensor is P0340.
🎬 Watch this video to understand the causes of the P0340 code.Choosing the Right Aftermarket Sensor for Your Sentra
When replacing this sensor, you have a choice between original equipment (OEM) and a wide range of aftermarket brands. For a critical sensor like this, quality matters.
A Note on Ultra-Cheap Sensors
While very low-priced sensors are available, they are often a gamble. Forum users and mechanics frequently report that cheap, unbranded sensors can fail quickly or be dead-on-arrival, forcing you to do the job twice. It's often better to spend a little more on a reputable brand to avoid future headaches.
Brand Quality Tiers
- OEM Supplier (Best Quality): Hitachi is widely reported to be the original equipment manufacturer for Nissan's camshaft sensors. Choosing a Hitachi sensor is the closest you can get to buying a genuine Nissan part without the dealership price tag. They are highly recommended for reliability and a perfect fit.
- Reputable Aftermarket (Good Quality): Brands like Delphi, Denso, and NGK (NTK) have a strong reputation for producing quality electronic components that meet or exceed OEM standards. These are a solid choice for a reliable repair at a more moderate price point.
- Standard/Value Aftermarket (Acceptable Quality): Brands such as Dorman, Standard Ignition (SMP), and Walker Products offer a balance of affordability and acceptable quality. They are a viable option if budget is the primary concern, but be aware that longevity might not match that of an OEM or OEM-supplier part.
Pro Tip: Check the O-Ring
When you remove the old sensor, make sure the old rubber O-ring comes out with it and isn't stuck in the engine. The new sensor should always be installed with its new O-ring. Applying a small amount of clean engine oil to the new O-ring can make installation easier and ensure a good seal.
Frequently Asked Questions
Where is the camshaft position sensor located on a 2008-2013 Sentra?
On the 2.0L (MR20DE) and 2.5L (QR25DE) engines found in this Sentra generation, the camshaft position sensor is located on the top of the engine, on the cylinder head, typically near the passenger side. It is held in by a single 10mm bolt and has an electrical connector attached.
Can I replace this sensor myself?
Yes, this is a very DIY-friendly repair. The sensor is easily accessible on top of the engine. The process involves disconnecting the electrical connector, removing one 10mm bolt, pulling the old sensor out, and installing the new one. The entire job can usually be done in under 30 minutes 🎬 Watch this step-by-step replacement guide for the 2.0L engine. with basic hand tools.
What is the difference between a camshaft and a crankshaft sensor?
They perform similar functions but monitor different shafts. The camshaft sensor tracks the position of the camshaft (which controls the valves), while the crankshaft sensor tracks the position of the crankshaft (which is connected to the pistons). The car's computer uses both signals to get a complete picture of the engine's cycle. 🎬 See how to replace both the camshaft and crankshaft sensors. Sometimes, a failure of the crankshaft sensor can trigger a code for the camshaft sensor, and vice-versa.
Do I need to reset the computer (ECU) after replacing the sensor?
It is highly recommended. After replacing the sensor, you should clear the stored trouble codes (like P0340) using an OBD-II scanner. In some cases, the car may not start or run properly with the new sensor until the old codes are erased from the computer's memory.
Were there any recalls for this sensor on the 2008-2013 Sentra?
Searches of the NHTSA database did not show a specific recall for the camshaft position sensor for the 2008-2013 Nissan Sentra model years. There was a recall for earlier Sentra models (2002, 2005-2006) related to the crankshaft position sensor, but this does not apply to the B16 generation. No relevant Technical Service Bulletins (TSBs) were found for this specific issue and year range.
Helpful Videos
Technical Specifications
OEM Part Numbers: 23731-EN22A 23731-3LM1A 23731-3LM1B 23731-3LM1C 23731-JA11B 23731-JA11A
3-pin connector, Hall Effect sensor, includes O-ring.
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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.
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