Engine-Codes.com
Engine-Codes – Infiniti – P0021 2003 Infiniti G35

P0021 2003 Infiniti G35 Code - Intake Valve Timing Control Performance Bank 2

Quick Answer

The P0021 code in a 2003 Infiniti G35 indicates a problem with the intake valve timing control on bank 2 of the engine. Common causes include Faulty intake valve timing control solenoid, Camshaft position sensor malfunction, Low engine oil level or poor quality oil. 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 2003 Infiniti G35 indicates Intake Valve Timing Control Performance Bank 2.
Common causes
Common causes include Faulty intake valve timing control solenoid, Camshaft position sensor malfunction, Low engine oil level or poor quality oil.
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 11, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0021 2003 Infiniti G35 Description

The P0021 code in a 2003 Infiniti G35 indicates a problem with the intake valve timing control on bank 2 of the engine. This system is responsible for adjusting the timing of the intake valves to optimize engine performance and fuel efficiency. When this code is triggered, it means that the control system is not functioning as it should, leading to potential issues with engine timing, combustion, and overall performance.

OBDII Code P0021 2003 Infiniti G35 - Intake Valve Timing Control Performance Bank 2
P0021 2003 Infiniti G35 Code - Intake Valve Timing Control Performance Bank 2

Common Causes of P0021 2003 Infiniti G35

  1. Faulty intake valve timing control solenoid
  2. Camshaft position sensor malfunction
  3. Low engine oil level or poor quality oil
  4. Clogged oil passages or filters
  5. Wiring or electrical issues in the control system

Symptoms of P0021 2003 Infiniti G35

  1. Rough idling or stalling
  2. Reduced engine performance and power
  3. Check Engine Light illuminated
  4. Engine misfires
  5. Poor fuel efficiency

How to Fix P0021 2003 Infiniti G35

  1. Diagnose the specific cause of the code using a scan tool and inspecting the intake valve timing control system components.
  2. Replace the faulty intake valve timing control solenoid or camshaft position sensor.
  3. Check and replenish engine oil to the correct level and quality.
  4. Inspect and clean oil passages and filters to ensure proper oil flow to the system.
  5. Clear the code and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P0021 2003 Infiniti G35

The cost of repairing the intake valve timing control performance issue on a 2003 Infiniti G35 can vary depending on the specific cause of the problem and the labor rates in your area. On average, you can expect to pay between $200 and $500 for parts and labor. Keep in mind that prices may be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive rates. It's recommended to obtain a few quotes from different repair shops to find the best price for your specific situation.

What does this mean?

Tech Notes for P0021 2003 Infiniti G35

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.



















User Submitted Video

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.

Need more information about the P0021 2003 Infiniti G35 code?

Need more information on how to fix the P0021 2003 Infiniti G35 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0021 2003 Infiniti G35 code diagnosed by a professional: Find a repair shop in your area

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 2003 Infiniti G35 Code

1. What are the common symptoms of OBDII code P0021 on a 2003 Infiniti G35?

The common symptoms of code P0021 on a 2003 Infiniti G35 may include rough idling, decreased fuel efficiency, lack of power, and illuminated Check Engine Light.

2. What does OBDII code P0021 "Intake Valve Timing Control Performance Bank 2" mean for a 2003 Infiniti G35?

Code P0021 indicates that there is a performance issue with the intake valve timing control on bank 2 of the engine in a 2003 Infiniti G35.

3. What are the possible causes of OBDII code P0021 on a 2003 Infiniti G35?

Possible causes of code P0021 on a 2003 Infiniti G35 include a faulty intake valve timing control solenoid, issues with the camshaft position sensor, dirty engine oil, or a problem with the timing chain.

4. How can I diagnose OBDII code P0021 on a 2003 Infiniti G35?

Diagnosing code P0021 may involve checking the intake valve timing control solenoid, inspecting the camshaft position sensor, verifying oil levels and quality, and examining the timing chain for proper alignment.

5. What are the repair options for OBDII code P0021 on a 2003 Infiniti G35?

Repairing code P0021 may involve replacing the intake valve timing control solenoid, addressing any issues with the camshaft position sensor, performing an oil change, or repairing/replacing the timing chain if necessary.

6. Can driving with OBDII code P0021 on a 2003 Infiniti G35 cause further damage?

Continuing to drive with code P0021 on a 2003 Infiniti G35 can potentially cause damage to the engine over time, as it may lead to poor engine performance and inefficient combustion.

7. How urgent is it to address OBDII code P0021 on a 2003 Infiniti G35?

It is recommended to address code P0021 promptly on a 2003 Infiniti G35 to prevent further damage to the engine and ensure optimal performance and fuel efficiency.

8. Is it possible to clear OBDII code P0021 on a 2003 Infiniti G35 without repairing the issue?

Clearing code P0021 without addressing the underlying issue may temporarily turn off the Check Engine Light, but the problem will likely resurface until the root cause is fixed.

9. Can a DIY enthusiast repair OBDII code P0021 on a 2003 Infiniti G35?

Depending on the DIYer's skill level and access to tools, some may be able to address code P0021 by replacing the intake valve timing control solenoid or performing an oil change, but more complex repairs may require professional assistance.

10. How much does it typically cost to repair OBDII code P0021 on a 2003 Infiniti G35?

The cost of repairing code P0021 on a 2003 Infiniti G35 can vary based on the specific issue, parts needed, and labor rates, but it may range from a few hundred to over a thousand dollars at a repair shop.

Discuss the causes and fixes for P0021 2003 Infiniti G35 OBDII Code

Submit a New Comment

Code P0021 2003 Infiniti G35 comments

No comments found for this page.