P1111 2003 Infiniti G35 Code - Intake Valve Timing Control Solenoid Valve Circuit Bank 1
Quick Answer
The intake valve timing control solenoid valve is activated by ON/OFF pulse duty (ratio) signals from the Engine Control Module (ECM). Common causes include Faulty Intake Valve Timing Control Solenoid Valve Bank 1, Intake Valve Timing Control Solenoid Valve Bank 1 harness is open or shorted, Intake Valve Timing Control Solenoid Valve Bank 1 circuit poor electrical connection. 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 2003 Infiniti G35 indicates Intake Valve Timing Control Solenoid Valve Circuit Bank 1.
- Common causes
- Common causes include Faulty Intake Valve Timing Control Solenoid Valve Bank 1, Intake Valve Timing Control Solenoid Valve Bank 1 harness is open or shorted, Intake Valve Timing Control Solenoid Valve Bank 1 circuit poor electrical connection.
- 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.
Code P1111 2003 Infiniti G35 Description
The longer pulse width advances the valve angle. The shorter pulse width retards the valve angle.
When ON and OFF pulse widths become equal, the solenoid valve stops oil pressure flow to fix the intake valve angle at the control position.
The Diagnostic Trouble Code (DTC) when an improper voltage is sent to the ECM through the intake valve timing control solenoid valve.
What are the Possible Causes of the DTC P1111 2003 Infiniti G35?
- Faulty Intake Valve Timing Control Solenoid Valve Bank 1
- Intake Valve Timing Control Solenoid Valve Bank 1 harness is open or shorted
- Intake Valve Timing Control Solenoid Valve Bank 1 circuit poor electrical connection
How to Fix the DTC P1111 2003 Infiniti G35?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1111 2003 Infiniti G35 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P1111 2003 Infiniti G35 code?
Need more information on how to fix the P1111 2003 Infiniti G35 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1111 2003 Infiniti G35 code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1111 2003 Infiniti G35 Code
1. What does code P1111 mean on a 2003 Infiniti G35?
Code P1111 indicates an issue with the Intake Valve Timing Control Solenoid Valve Circuit for Bank 1, which helps regulate valve timing for optimal engine performance.
2. What are the common symptoms of a P1111 code?
Symptoms may include reduced engine performance, poor fuel economy, rough idling, difficulty starting, or the check engine light being illuminated.
3. What causes the P1111 code on a 2003 Infiniti G35?
Common causes include a faulty intake valve timing control solenoid, damaged wiring or connectors in the circuit, low or dirty engine oil, or a failed engine control module (ECM).
4. Can dirty engine oil trigger the P1111 code?
Yes, dirty or low engine oil can restrict the solenoid’s operation, causing the code to appear. Regular oil changes are critical for proper solenoid function.
5. How do I fix the P1111 code on my Infiniti G35?
Check the intake valve timing control solenoid for proper operation, inspect wiring and connectors for damage, ensure oil is clean and at the correct level, and replace faulty components if necessary.
6. Where is the intake valve timing control solenoid located on a 2003 Infiniti G35?
The solenoid is typically located near the front of the engine on the cylinder head for Bank 1, which is the side of the engine containing cylinder 1.
7. Can I drive my Infiniti G35 with a P1111 code?
While it may be possible to drive with this code, it is not recommended as it can lead to reduced performance, potential engine damage, and increased emissions if not addressed promptly.
8. How much does it cost to fix a P1111 code on a 2003 Infiniti G35?
Repair costs vary but generally include $100–$300 for a new solenoid and additional labor costs if done by a mechanic. Diagnostic costs may also apply.
9. How can I prevent the P1111 code from returning?
Regular maintenance, including timely oil changes with the correct oil type, and periodic inspection of the solenoid and wiring, can help prevent this code.
10. Does a P1111 code always mean the solenoid is bad?
No, the code could also be caused by wiring issues, a clogged oil passage, or a malfunctioning ECM. Proper diagnostics are essential to identify the root cause.
Discuss the causes and fixes for P1111 2003 Infiniti G35 OBDII Code
Code P1111 2003 Infiniti G35 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
