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 not getting a signal from a part that helps control how the engine breathes. It's like trying to watch TV but not getting any signal.
The P1065 code indicates that the vehicle's Variable Valve Lift (VVL) system is not receiving a signal via the Controller Area Network (CAN) bus.
This code is triggered when the Engine Control Module (ECM) detects a loss of communication or no signal from the Variable Valve Lift (VVL) control module through the CAN bus. The CAN bus is a vehicle's internal communication network that allows different components to communicate with each other. A timeout or no signal indicates a disruption in this communication, which can affect engine performance.
• Check Engine Light is on
• Reduced engine performance
• Poor fuel economy
• Engine may run rough
• Faulty VVL control module
• Damaged or corroded wiring/connectors
• Faulty ECM
• CAN bus communication error
VVL: Variable Valve Lift, a technology that adjusts the lift of the engine's valves.
CAN: Controller Area Network, a robust vehicle bus standard designed to allow microcontrollers and devices to communicate with each other.
• Check for any other error codes.
• Inspect wiring and connectors related to the VVL system.
• Test the VVL control module for proper operation.
• Check CAN bus communication lines for faults.
• Repair or replace damaged wiring/connectors.
• Replace faulty VVL control module.
• Reprogram or replace the ECM if necessary.
• Ensure CAN bus network is functioning properly.
• OBD-II scanner
• Multimeter
• CAN bus diagnostic tool
$200 - $800
Moderate
• Nissan Altima
• Infiniti G35
• Nissan Maxima
• Regularly inspect and maintain vehicle wiring.
• Ensure all software updates are applied to the ECM.
• Avoid harsh driving conditions that can damage vehicle components.
Communication Error
• Have a professional diagnose the issue to avoid further damage.
• Do not ignore the Check Engine Light as it can lead to more severe problems.
• Regular maintenance can help prevent such issues.
Check with your vehicle manufacturer for warranty coverage on the ECM and related components.
This code has been more prevalent in vehicles with complex VVL systems and CAN bus networks as these systems age.
Moderate – It should be addressed soon to avoid potential engine performance issues.
Driving with a malfunctioning VVL system can lead to increased emissions and may not comply with emission regulations.
• Vehicle must be running.
• Ensure all electrical connections are secure.
The VVL control module is typically located near the engine, often mounted on or near the cylinder head.
Q: Can I drive with a P1065 code?
A: It's possible to drive short distances, but it's not recommended as it can lead to further engine issues.
Q: Will a P1065 code affect my car's performance?
A: Yes, it can cause reduced engine performance and poor fuel economy.
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