• Check Engine Light is on
• Reduced engine performance
• Poor fuel economy
• Corrupted EEPROM data
• Faulty VVL control module
• Electrical issues such as poor connections or damaged wiring
EEPROM: Electrically Erasable Programmable Read-Only Memory
VVL: Variable Valve Lift
• P1043
• P1045
Internal VVL Control Module EEPROM Error (Bank 2)
The car's computer found a problem with the memory chip that helps control how the engine valves open and close on one side of the engine.
The EEPROM (Electrically Erasable Programmable Read-Only Memory) in the Variable Valve Lift (VVL) control module for Bank 2 has an error.
The P1044 code indicates a fault in the EEPROM of the VVL control module for Bank 2. The EEPROM stores important data for the control module's operation, and an error suggests that this data may be corrupted or inaccessible, affecting the module's ability to manage valve lift effectively.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors to the VVL control module.
• Test the VVL control module for proper operation.
• Repair or replace any damaged wiring or connectors.
• Reprogram or replace the VVL control module.
• Clear the code and test drive the vehicle to ensure the issue is resolved.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $600
Moderate
• Nissan Altima
• Infiniti G35
• Nissan Maxima
• Regularly check and maintain electrical connections.
• Update vehicle software as recommended by the manufacturer.
• Avoid aftermarket modifications that may affect engine control modules.
Engine Performance
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if you notice performance issues.
Check with your vehicle manufacturer for warranty coverage on engine control modules.
This code has been associated with issues in vehicles using advanced valve timing technology, particularly in models from the early 2000s.
Moderate – Address the issue to prevent potential engine performance problems.
Driving with a malfunctioning engine control module can lead to reduced performance and increased emissions.
• Vehicle at operating temperature
• Engine running
The VVL control module is typically located on or near the engine, often on the valve cover or engine block.
Q: Can I drive with a P1044 code?
A: It's possible to drive, but it's not recommended as it may lead to reduced engine performance and efficiency.
Q: How do I clear a P1044 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is resolved, the code should not return.
