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Engine-Codes – Nissan – P0021 2008 Nissan Maxima

P0021 2008 Nissan Maxima Code - Intake Valve Timing Control Performance Bank 2

Quick Answer

The P0021 diagnostic trouble code (DTC) in a 2008 Nissan Maxima refers to the Intake Valve Timing Control Performance on Bank 2. Common causes include Faulty intake valve timing control solenoid, Issues with camshaft position sensors, Timing chain or belt problems. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0021 2008 Nissan Maxima indicates Intake Valve Timing Control Performance Bank 2.
Common causes
Common causes include Faulty intake valve timing control solenoid, Issues with camshaft position sensors, Timing chain or belt problems.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P0021 2008 Nissan Maxima Description

The P0021 diagnostic trouble code (DTC) in a 2008 Nissan Maxima refers to the Intake Valve Timing Control Performance on Bank 2. This code indicates that there is a performance issue with the intake valve timing control system on the second bank of cylinders in the engine. The intake valve timing control system is responsible for adjusting the timing of the opening and closing of the intake valves to optimize engine performance and efficiency.

OBDII Code P0021 2008 Nissan Maxima - Intake Valve Timing Control Performance Bank 2
P0021 2008 Nissan Maxima Code - Intake Valve Timing Control Performance Bank 2

Common Causes of P0021 2008 Nissan Maxima

  1. Faulty intake valve timing control solenoid
  2. Issues with camshaft position sensors
  3. Timing chain or belt problems
  4. Low engine oil levels or dirty oil
  5. Electrical issues with the intake valve timing control system

Symptoms of P0021 2008 Nissan Maxima

  1. Reduced engine performance
  2. Decreased fuel efficiency
  3. Rough idling or stalling
  4. Engine misfires
  5. Illumination of the check engine light

How to Fix P0021 2008 Nissan Maxima

  1. Diagnose the issue with a scan tool to verify the P0021 code and identify the specific component causing the problem.
  2. Inspect the intake valve timing control solenoid, camshaft position sensors, and timing chain or belt for any signs of damage or wear.
  3. Replace any faulty components identified during the diagnosis process.
  4. Clear the DTC and test drive the vehicle to ensure that the issue has been resolved.
  5. Perform a final inspection to confirm that the repair was successful and that the code does not return.

Cost to Fix P0021 2008 Nissan Maxima

The typical repair costs for addressing a P0021 code in a 2008 Nissan Maxima can vary depending on the specific component that needs to be replaced and the labor rates in your area. Generally, the cost of parts for this repair can range from $100 to $500, with labor costs adding an additional $100 to $300. Overall, you can expect to pay anywhere from $200 to $800 for this repair, but it's advisable to check with local auto repair shops for a more accurate estimate based on your location and vehicle.

What does this mean?

Tech Notes for P0021 2008 Nissan Maxima

Since the Intake valve timing control solenoid valve uses oil flow to control timing, dirty oil can cause the valve to stuck open or close. Before replacing the valve, change the engine oil and filter and reset the engine code. If the code comes back you can remove the Intake valve timing control solenoid and clean it with brake cleaner.



















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When is the Code Detected?

When there is a gap between angle of target and phase-control angle degree, the valve will stop working and the ECM will trigger the P0021 code.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0021 2008 Nissan Maxima Code

1. What are the common symptoms of OBDII code P0021 in a 2008 Nissan Maxima?

The common symptoms of code P0021 in a 2008 Nissan Maxima include rough idling, poor engine performance, and possibly a decrease in fuel efficiency.

2. What does the OBDII code P0021 mean on a 2008 Nissan Maxima?

Code P0021 indicates a performance issue with the intake valve timing control for Bank 2 in the engine of a 2008 Nissan Maxima.

3. What are the possible causes of OBDII code P0021 in a 2008 Nissan Maxima?

Common causes of code P0021 in a 2008 Nissan Maxima include a faulty intake valve timing control solenoid, issues with the camshaft position sensor, or problems with the engine oil flow.

4. How can I diagnose the OBDII code P0021 in a 2008 Nissan Maxima?

Diagnosing code P0021 involves using an OBDII scanner to retrieve the trouble code, checking the intake valve timing control solenoid, inspecting the camshaft position sensor, and ensuring proper engine oil levels and flow.

5. Can I continue driving my 2008 Nissan Maxima with OBDII code P0021?

It is not recommended to drive your 2008 Nissan Maxima with code P0021, as it can lead to further engine damage and potential safety hazards. It is best to address the issue promptly.

6. How can I repair OBDII code P0021 in a 2008 Nissan Maxima?

Repairing code P0021 may involve replacing the intake valve timing control solenoid, fixing any issues with the camshaft position sensor, and ensuring proper engine oil levels and flow.

7. Is it possible to reset the OBDII code P0021 in a 2008 Nissan Maxima?

You can reset the OBDII code P0021 using an OBDII scanner after addressing the underlying issue causing the fault code. However, the code may reappear if the problem persists.

8. Can a DIY enthusiast fix OBDII code P0021 in a 2008 Nissan Maxima?

Depending on the level of automotive expertise, a DIY enthusiast may be able to address code P0021 by following repair guides and using the necessary tools. However, complex issues might require professional assistance.

9. Will OBDII code P0021 cause permanent damage to a 2008 Nissan Maxima?

Continuing to drive with code P0021 can potentially lead to permanent engine damage if left unresolved. It is crucial to address the issue promptly to avoid costly repairs.

10. How can I prevent OBDII code P0021 from appearing in my 2008 Nissan Maxima?

To prevent code P0021, regularly maintain your vehicle by changing the engine oil on time, inspecting and replacing faulty components, and addressing any engine performance issues promptly.

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