5V Crank Pos Sensor 31935-8E002 31935-8E004 31935-8E006 Nissan Infiniti

Crankshaft Position Sensor 31935-8E002/31935-8E004/31935-8E006/SU7828/5S4973/5S4751/5S6317 For Nissan / Infiniti

Part number 31935-8E002 is recognized across multiple brands and supplier lines. The following cross-reference numbers are commonly associated with this sensor:

Note: Cross-reference numbers are provided for reference purposes only. Always verify compatibility with your specific vehicle before purchase.

Part number 31935-8E002 is compatible with a broad range of vehicles, primarily across the Nissan and Infiniti model lines. The sensor is predominantly used in vehicles equipped with CVT (Continuously Variable Transmission) and various engine configurations.

• SR20DE

• QG18DD

• Various 1.6L, 2.0L, 2.5L, and 3.5L gasoline engines

This sensor is specifically designed for use with:

• CVT (Continuously Variable Transmission) – Primary sensor application

• Various automatic transmissions requiring speed/revolution sensing

Note: Compatibility may vary by specific vehicle configuration, production date, and regional specifications. Always verify fitment for your particular vehicle before purchase.

A failing or malfunctioning crankshaft position sensor can produce a range of noticeable symptoms. Early recognition of these warning signs can prevent more serious engine damage and costly repairs.

A malfunctioning crankshaft position sensor will typically trigger the Check Engine Light. Common diagnostic trouble codes associated with this sensor include:

• P0335 – Crankshaft Position Sensor "A" Circuit Malfunction

• P0339 – Crankshaft Position Sensor "A" Circuit Intermittent

DTC P0335 is detected when the 1° signal is not received by the ECM for the first few seconds during engine cranking, or when the signal is not received during engine running. P0339 is detected when no crankshaft position sensor signal is received for 0.05 seconds or more under specific operating conditions.

The most common symptom of a failing crankshaft position sensor is difficulty starting the engine. The engine may crank for an extended period before starting, or may not start at all. Since the ECM relies on the crankshaft position signal to determine when to fire the ignition and inject fuel, a weak or absent signal prevents the engine from starting.

A failing sensor may cause the engine to stall unexpectedly while driving or at idle. The stalling can occur suddenly and without warning, often with the tachometer dropping to zero during the event.

When the crankshaft position sensor provides an erratic or incorrect signal, the engine may exhibit:

• Rough or uneven idle

• Engine misfires

• Poor or erratic acceleration

• Inconsistent power delivery

If the crankshaft position sensor is faulty, the tachometer may not function correctly. Even when the engine is running normally, the engine speed may display as zero due to the absence of the crankshaft position sensor signal.

Since the sensor also provides crucial data for transmission control (particularly in CVT applications), a failing sensor may cause:

• Transmission slippage

• Transmission may default to second gear

• Erratic or delayed shifting

The cruise control system relies on accurate speed and engine revolution data. A failing sensor may cause cruise control to malfunction or become inoperative.

It is important to note that crankshaft position sensor failures can be intermittent. The sensor may function correctly when cold but fail when hot, or may work intermittently due to loose connections, corrosion, or contamination. A thorough inspection of the sensor connector for looseness, poor connections, bending, corrosion, contamination, or damage is recommended when troubleshooting.

When purchasing a replacement crankshaft position sensor (Part No. 31935-8E002), consider the following factors to ensure you select the right product for your needs:

Always confirm that the part number on the replacement sensor matches your vehicle's requirements. Part number 31935-8E002 is also referenced as 31935 8E002 and 319358E002 in some catalogues. Related part numbers in this family include 31935-8E000, 31935-8E001, 31935-8E003, 31935-8E004, and 31935-8E006. While these may be interchangeable in some applications, verify compatibility with your specific vehicle model and year.

This sensor is vehicle-specific and must be compatible with your engine and transmission system. Cross-reference the sensor with your vehicle's:

• Make and model (Nissan, Infiniti, etc.)

• Model year

• Engine size and configuration (SR20DE, QG18DD, etc.)

• Transmission type (particularly CVT)

• Production date

While often referred to as a crankshaft position sensor, this part number serves as a revolution/speed sensor in many CVT applications. In some vehicles, it functions as a transmission input/output speed sensor. Understanding the specific role of this sensor in your vehicle can help with proper diagnosis and installation.

This sensor features:

• Female connector

• Oval connector shape

• 3 male blade terminals

• No wiring harness included

Verify that the connector configuration matches your vehicle's wiring harness to ensure a proper electrical connection.

The sensor is typically mounted on the transmission housing or oil pan, facing the signal plate or flywheel gear teeth. It uses bolt-type mounting. Ensure the replacement sensor includes the correct mounting provisions for your specific application.

In some CVT applications, there are left and right sensors with different part numbers (31935-8E002 and 31935-8E003). Verify which position your vehicle requires before purchasing.

Choose a sensor that meets or exceeds OEM specifications for:

• Signal accuracy – Proper pulse generation and amplitude

• Durability – Resistance to heat, vibration, and contamination

• Precision engineering – Exact fit and function matching original specifications

• Temperature tolerance – Capable of withstanding under-hood temperatures

Sensors that undergo rigorous testing—including extreme temperature cycling—offer greater reliability and longer service life.

When diagnosing a suspect sensor, resistance can be measured between the sensor terminals. While specific resistance values vary by application, the NE signal sensor typically has a resistance range of approximately 1,630 to 2,740 Ω at cold and 2,065 to 3,225 Ω at hot. These values can serve as a reference when verifying sensor condition.

Before replacing the sensor, thoroughly inspect the sensor connector for looseness, poor connections, bending, corrosion, contamination, or damage. In some cases, the issue may be related to the wiring or connector rather than the sensor itself. Possible causes of DTC P0335 include open or shorted circuits in the crankshaft position sensor wiring.

Verify the warranty terms offered with the sensor. Most OEM-grade sensors come with a minimum 12-month warranty. A longer warranty period often indicates greater confidence in product quality.

When ordering online, confirm shipping terms and delivery timelines. Ensure the seller uses reputable shipping carriers to protect the sensor during transit.