Engine-CodesInfiniti – P1111 2004 Infiniti G35

P1111 2004 Infiniti G35 Code - Intake Valve Timing Control Solenoid Valve Circuit Bank 1

Quick Answer

The P1111 diagnostic trouble code (DTC) for a 2004 Infiniti G35 refers to the Intake Valve Timing Control Solenoid Valve Circuit Bank 1. Common causes include Faulty intake valve timing control solenoid valve, Wiring or connector issues in the solenoid valve circuit, Low engine oil level or poor oil quality. 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
P1111 2004 Infiniti G35 indicates Intake Valve Timing Control Solenoid Valve Circuit Bank 1.
Common causes
Common causes include Faulty intake valve timing control solenoid valve, Wiring or connector issues in the solenoid valve circuit, Low engine oil level or poor oil quality.
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.
Table of contents Created and updated by William Orellana on Sep 17, 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 P1111 2004 Infiniti G35 Description

The P1111 diagnostic trouble code (DTC) for a 2004 Infiniti G35 refers to the Intake Valve Timing Control Solenoid Valve Circuit Bank 1. This code indicates a problem with the solenoid valve that controls the intake valve timing on the engine's bank 1 side. The intake valve timing control solenoid valve plays a crucial role in regulating the timing of the intake valves, which affects the engine's performance, fuel efficiency, and emissions.

OBDII Code P1111 2004 Infiniti G35 - Intake Valve Timing Control Solenoid Valve Circuit Bank 1
P1111 2004 Infiniti G35 Code - Intake Valve Timing Control Solenoid Valve Circuit Bank 1

Common Causes of P1111 2004 Infiniti G35

  1. Faulty intake valve timing control solenoid valve
  2. Wiring or connector issues in the solenoid valve circuit
  3. Low engine oil level or poor oil quality
  4. ECM software or hardware malfunction
  5. Mechanical problems with the intake valve timing control system

Symptoms of P1111 2004 Infiniti G35

  1. Engine misfires
  2. Rough idling
  3. Reduced power output
  4. Poor fuel efficiency
  5. Illuminated check engine light

How to Fix P1111 2004 Infiniti G35

  1. Diagnose the issue by using a scan tool to retrieve the DTC and inspect the intake valve timing control solenoid valve and related components.
  2. Replace the faulty intake valve timing control solenoid valve if necessary.
  3. Check and repair any damaged wiring or connectors in the solenoid valve circuit.
  4. Verify proper engine oil level and quality, topping up or changing the oil as needed.
  5. Clear the DTC and perform a test drive to ensure the issue has been resolved.

Cost to Fix P1111 2004 Infiniti G35

The typical repair costs for addressing the P1111 code on a 2004 Infiniti G35 can range from $200 to $500, including parts and labor. However, actual costs may vary depending on the specific diagnosis time and labor rates at auto repair shops. It is advisable to check with local shops for more accurate estimates based on your location and vehicle details. Keep in mind that rates can vary based on factors such as the vehicle make and model, engine type, and the shop's location and expertise.

Tech Notes for P1111 2004 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.

Need more information about the P1111 2004 Infiniti G35 code?

Need more information on how to fix the P1111 2004 Infiniti G35 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1111 2004 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 P1111 2004 Infiniti G35 Code

1. What does the OBDII code P1111 mean on a 2004 Infiniti G35?

P1111 indicates an issue with the Intake Valve Timing Control Solenoid Valve Circuit on Bank 1, which affects the engine's variable valve timing system.

2. What are common symptoms of code P1111 on a 2004 Infiniti G35?

Symptoms may include poor engine performance, rough idling, decreased fuel efficiency, and the Check Engine Light being illuminated.

3. What causes the P1111 code on a 2004 Infiniti G35?

Common causes include a faulty intake valve timing control solenoid, damaged or corroded wiring, a malfunctioning ECU, or low engine oil levels.

4. How does the intake valve timing control solenoid work?

This solenoid adjusts the timing of the intake valves to optimize engine performance and efficiency based on driving conditions.

5. Can low engine oil cause the P1111 code on a 2004 Infiniti G35?

Yes, low or dirty engine oil can affect the solenoid's performance, leading to the P1111 code.

6. How can you diagnose the P1111 code on a 2004 Infiniti G35?

Diagnosis typically involves checking the solenoid's electrical connections, testing the solenoid for proper operation, inspecting wiring for damage, and ensuring adequate engine oil levels.

7. How do you fix the P1111 code on a 2004 Infiniti G35?

Repairs may include replacing the intake valve timing control solenoid, repairing damaged wiring, cleaning electrical connections, or performing an oil change.

8. Can you drive with the P1111 code on a 2004 Infiniti G35?

While the vehicle may still run, driving with this code can lead to poor performance and potential long-term engine damage if not addressed.

9. How much does it cost to repair the P1111 code on a 2004 Infiniti G35?

Repair costs can vary, but replacing the solenoid typically ranges from $150 to $300, including parts and labor.

10. Is the P1111 code specific to Bank 1 on a 2004 Infiniti G35?

Yes, Bank 1 refers to the side of the engine with cylinder 1, and the code specifically pertains to the solenoid circuit on that side.

Discuss the causes and fixes for P1111 2004 Infiniti G35 OBDII Code

Code P1111 2004 Infiniti G35 comments

No comments found for this page.