P0725 Nissan Altima: Comprehensive Guide on Replacing the Crankshaft Position Sensor

Welcome to another post by Jim the car guy! Today, we will guide you through fixing a 2005 Nissan Altima with a 2.5 liter engine that stalls while driving, followed by a step-by-step guide on how to replace the crankshaft position sensor.

The issue occurs where the car stalls without reason, and after scanning, a P0335 code for the crank position sensor was found. Despite the low mileage of the car at around 20,000 miles, the sensor replacement was necessary to address the stalling problem.

How to Replace the Crankshaft Position Sensor on a Nissan Altima

The sensor is located in a tight spot, making it hard to access from the bottom. It requires removing the air box and snorkel tube to gain access to the sensor. Jim advises removing the sensor from the top using a light to see it. The replacement process is demonstrated step by step, including releasing the locking clip, removing the sensor box, and handling the wiring.

Replacing the Sensor

After accessing the sensor, removing it using needle nose pliers and installing the new sensor with a bit of grease on the O-ring are shown. An insightful tip is shared on preventing the bolt from falling during installation.

Reassembly and Testing

The reassembly process is explained, cautioning viewers about the placement of the sensor lock. Jim points out a redesign in the replacement sensor and ensures viewers not to worry about the differences. Furthermore, he emphasizes the importance of patience during the reconnection process.


After reassembling the components, the car is started to ensure the issue has been resolved. Jim advises being patient and cautious throughout the process and offers to address any questions or concerns from viewers.

Thank you for reading this step-by-step guide by Jim the car guy on fixing a stalling Nissan Altima. We hope the information provided will assist you in successfully replacing the crankshaft position sensor on your vehicle.

What is the problem with the 2005 Nissan Altima with a 2.5 liter engine?

The problem is that the car stalls and dies while driving, especially when coming to a stop, but starts right up and runs perfectly otherwise.

What is the diagnostic trouble code shown on the scan?

The diagnostic trouble code is P0335, indicating a crank position sensor issue.

How is the crankshaft position sensor replaced?

The air box and air snorkel tube are removed to access the sensor. The sensor is unclipped, and the wiring and bracket are disconnected. The old sensor is then removed using needle-nose pliers, and the new one is greased, inserted, and secured with a bolt. The wiring and bracket are reattached, and the car is started to check if the issue is resolved.

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