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Engine-Codes – Nissan – P0021 2005 Nissan Maxima

P0021 2005 Nissan Maxima Code - Intake Valve Timing Control Performance Bank 2

Quick Answer

The P0021 diagnostic trouble code (DTC) for a 2005 Nissan Maxima indicates an issue with the Intake Valve Timing Control Performance on Bank 2. Common causes include Faulty intake valve timing control solenoid, Clogged oil passages in the intake valve timing control system, Wiring or electrical issues in the intake valve timing control circuit. 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 2005 Nissan Maxima indicates Intake Valve Timing Control Performance Bank 2.
Common causes
Common causes include Faulty intake valve timing control solenoid, Clogged oil passages in the intake valve timing control system, Wiring or electrical issues in the intake valve timing control circuit.
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 16, 2024
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Code P0021 2005 Nissan Maxima Description

The P0021 diagnostic trouble code (DTC) for a 2005 Nissan Maxima indicates an issue with the Intake Valve Timing Control Performance on Bank 2. This code specifically relates to the intake valve timing control system, which is responsible for adjusting the timing of the intake valves to optimize engine performance. In this case, Bank 2 refers to the side of the engine where the issue is occurring.

OBDII Code P0021 2005 Nissan Maxima - Intake Valve Timing Control Performance Bank 2
P0021 2005 Nissan Maxima Code - Intake Valve Timing Control Performance Bank 2

Common Causes of P0021 2005 Nissan Maxima

  1. Faulty intake valve timing control solenoid
  2. Clogged oil passages in the intake valve timing control system
  3. Wiring or electrical issues in the intake valve timing control circuit
  4. Low engine oil level or poor quality oil
  5. Engine timing chain or belt issues

Symptoms of P0021 2005 Nissan Maxima

  1. Reduced engine power
  2. Poor fuel efficiency
  3. Rough idling
  4. Hesitation during acceleration
  5. Increased emissions output

How to Fix P0021 2005 Nissan Maxima

  1. Begin by diagnosing the specific cause of the P0021 code using a scan tool to pinpoint the issue within the intake valve timing control system.
  2. Inspect the intake valve timing control solenoid and related components for any signs of damage or wear. Replace any faulty parts as needed.
  3. Check the oil passages in the intake valve timing control system for any blockages or restrictions. Clean out any debris or sludge that may be causing issues.
  4. Inspect the wiring and connectors in the intake valve timing control circuit for any damage or corrosion. Repair or replace any damaged components.
  5. Reset the ECM after completing the repairs and test drive the vehicle to ensure that the P0021 code does not return.

Cost to Fix P0021 2005 Nissan Maxima

The cost of repairing the intake valve timing control performance issue on a 2005 Nissan Maxima can vary depending on the specific cause of the problem and the extent of the repairs needed. On average, the parts for this repair can range from $100 to $300, while the labor costs can range from $150 to $400. Overall, the total repair cost for addressing the P0021 code typically falls between $250 and $700. It is important to note that these estimates are general guidelines and actual costs may vary based on factors such as location, labor rates, and the availability of parts. It is recommended to consult with a qualified mechanic or repair shop to obtain a more accurate cost estimate for your specific situation.

What does this mean?

Tech Notes for P0021 2005 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 2005 Nissan Maxima Code

1. What are common symptoms of OBDII code P0021 in a 2005 Nissan Maxima?

- Common symptoms include rough idling, engine misfires, reduced fuel efficiency, and a noticeable decrease in overall engine performance.

2. What does the OBDII code P0021 on a 2005 Nissan Maxima indicate?

- This code indicates a fault in the Intake Valve Timing Control on Bank 2, which is responsible for regulating the timing of the intake valves for optimal engine performance.

3. What are some possible causes of the P0021 code in a 2005 Nissan Maxima?

- Potential causes include a faulty Intake Valve Timing Control solenoid, issues with the camshaft position sensor, engine oil flow problems, or a timing chain/belt issue.

4. How can I diagnose the source of the P0021 code in my 2005 Nissan Maxima?

- Diagnosing the issue may involve checking the condition of the Intake Valve Timing Control solenoid, inspecting the camshaft position sensor, and ensuring proper engine oil levels and flow.

5. Can driving with the P0021 code on a 2005 Nissan Maxima cause further damage?

- Continuing to drive with this code can potentially cause damage to the engine, leading to more severe issues over time. It is recommended to address the problem promptly.

6. Is it safe to drive my 2005 Nissan Maxima with the P0021 code if the symptoms are not severe?

- It is not advisable to drive the vehicle for an extended period with this code present, as it can lead to decreased performance and potential long-term damage to the engine.

7. How can I repair the P0021 code in my 2005 Nissan Maxima?

- Repairs may involve replacing the faulty Intake Valve Timing Control solenoid, addressing any issues with the camshaft position sensor, and ensuring proper engine oil levels and flow.

8. Is it possible to reset the OBDII code P0021 in a 2005 Nissan Maxima without fixing the underlying issue?

- While you can clear the code temporarily, it will likely reappear if the root cause is not addressed. It is important to diagnose and fix the issue to prevent further problems.

9. Can a DIY enthusiast fix the P0021 code in a 2005 Nissan Maxima?

- Depending on your skill level and access to tools, some DIY enthusiasts may be able to address this code by following repair guides, but it is recommended to seek professional help for accurate diagnosis and repair.

10. How much should I expect to pay for repairing the P0021 code in my 2005 Nissan Maxima at a mechanic?

- Repair costs can vary based on the exact cause of the issue and labor rates in your area, but you can expect to pay anywhere from $200 to $600 for parts and labor to address the P0021 code.

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