2005 Altima - Check Engine Light

The first place to look is to get the fault code read out. Autozone and other auto parts stores will do it for free. The description they come up with may or may not be correct, so make sure you get the actual number. Post it & someone on here can likely tell you what it means and where you should look.

Thank you for the advice. I will check with them and post code. Thanks again!

you'll probably see a p-0325code stored = crank position sensor.

Most parts stores will check the codes for free. I would start there.

It sounds like your son's 2005 Altima is experiencing a common issue. Here are a few steps you can take to diagnose and potentially fix the problem:

1. **Check the Trouble Codes**: The first step is to use an OBD-II scanner to read the trouble codes from the car's computer. This will give you a specific idea of what might be wrong.

1. **Inspect the Fuel System**: - **Fuel Filter**: A clogged fuel filter can cause hard starting and poor engine performance. Replacing the fuel filter might help if it hasn't been changed recently. - **Fuel Pump**: Ensure the fuel pump is working correctly. A failing fuel pump can also cause similar symptoms.

2. **Check the Sensors**: - **Mass Air Flow (MAF) Sensor**: A dirty or faulty MAF sensor can cause starting issues and trigger the check engine light. Cleaning or replacing the MAF sensor might resolve the problem. - **Oxygen Sensors**: Faulty oxygen sensors can also cause the check engine light to come on and affect engine performance.

1. **Inspect the Ignition System**: - **Spark Plugs and Wires**: Worn-out spark plugs or damaged wires can cause hard starting. Inspect and replace them if necessary.

2. **Vacuum Leaks**: Check for any vacuum leaks in the engine bay. Leaks can cause a variety of issues, including hard starting and triggering the check engine light.

1. **Battery and Electrical Connections**: Ensure the battery is in good condition and all electrical connections are clean and secure.

If you're not comfortable performing these checks yourself, it might be best to take the car to a professional mechanic who can diagnose and fix the issue more accurately.

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