Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is having trouble talking to a part that helps control how much fuel goes into the engine. It's like when your walkie-talkie isn't working well and you can't hear your friend clearly.
This code indicates a problem with the voltage level in the circuit that controls the Variable Valve Lift (VVL) and fuel injection relay. The circuit is reading a lower voltage than expected.
The P11F3 code is triggered when the Engine Control Module (ECM) detects that the voltage in the VVL and injection relay control circuit is below the specified range. This can affect the engine's performance by causing improper fuel delivery and valve timing.
• Check Engine Light illuminated
• Poor engine performance
• Increased fuel consumption
• Faulty VVL and injection relay
• Wiring issues such as shorts or open circuits
• Malfunctioning ECM
VVL: Variable Valve Lift, a system that adjusts the lift of the engine's valves.
ECM: Engine Control Module, the computer that controls engine functions.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the VVL and injection relay for proper operation.
• Repair or replace damaged wiring.
• Replace the faulty VVL and injection relay.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $500
Moderate
• Nissan Altima
• Nissan Maxima
• Nissan Murano
• Regular maintenance checks
• Ensure all electrical connections are secure
• Avoid exposure to moisture in electrical components
Circuit Issue
• Avoid driving for extended periods until the issue is resolved.
• Consult a professional mechanic for diagnosis and repair.
Check with your vehicle manufacturer for warranty coverage on electronic components.
This code is relatively uncommon and often associated with specific models known for electrical issues.
Moderate – It should be addressed soon to avoid potential engine performance issues.
Driving with this code may lead to increased emissions, which can be illegal in some regions.
• Engine at operating temperature
• Vehicle stationary
The VVL and injection relay is typically located in the engine bay, near the engine or fuse box.
Q: Can I drive with a P11F3 code?
A: It's possible to drive short distances, but it's best to fix the issue soon to avoid further problems.
Q: Will a P11F3 code cause my car to fail emissions testing?
A: Yes, it might cause your car to fail emissions testing due to improper fuel delivery.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.