Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the electrical circuit that controls a part of the engine responsible for adjusting how the engine breathes. It's like a light switch that's not working properly, so the light (engine part) can't turn on or off as needed.
The P10FF code indicates an issue with the voltage supply to the Variable Valve Lift (VVL) relay circuit on the second bank of the engine. This can affect the engine's ability to adjust valve timing and lift, which is crucial for optimal performance.
The P10FF code is triggered when the Engine Control Module (ECM) detects an open or insufficient voltage in the Variable Valve Lift (VVL) relay supply circuit for bank 2. This can prevent the VVL system from functioning correctly, potentially affecting engine efficiency and emissions.
• Check Engine Light is on
• Reduced engine performance
• Poor fuel economy
• Engine may run rough
• Faulty VVL relay
• Open or short in the VVL relay circuit
• Blown fuse
• Faulty ECM
VVL: Variable Valve Lift, a system that adjusts the lift of the engine's intake and exhaust valves.
ECM: Engine Control Module, the computer that controls engine functions.
• Check for any blown fuses related to the VVL system.
• Inspect the VVL relay and its connections for damage or corrosion.
• Test the VVL relay for proper operation.
• Check the wiring and connectors in the VVL circuit for continuity.
• Replace any blown fuses.
• Repair or replace damaged wiring or connectors.
• Replace the VVL relay if faulty.
• Reprogram or replace the ECM if necessary.
• Multimeter
• OBD-II scanner
• Basic hand tools
$100 - $500
Moderate
• Nissan Altima
• Infiniti Q50
• Honda Accord
• Regularly inspect and maintain electrical connections.
• Replace fuses as needed.
• Perform regular vehicle maintenance checks.
Engine Performance
• Avoid driving the vehicle aggressively until the issue is resolved.
• Consult a professional mechanic for diagnosis and repair.
Check with your vehicle manufacturer for warranty coverage on engine components.
This code has been associated with vehicles using advanced variable valve timing systems, which have become more common in modern engines.
Moderate – It is recommended to address this issue soon to prevent potential engine performance problems.
Ignoring this code may lead to increased emissions and reduced fuel efficiency, which could affect compliance with emission regulations.
• Engine at operating temperature
• Vehicle in park or neutral
The VVL relay is typically located in the engine compartment fuse box or near the engine on the second bank.
Q: What happens if I ignore the P10FF code?
A: Ignoring this code can lead to decreased engine performance and fuel efficiency, and may cause further damage to engine components.
Q: Can I drive my car with a P10FF code?
A: While the vehicle may still be drivable, it is not recommended to ignore the issue as it can lead to more serious engine problems over time.
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