Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is having trouble figuring out the right position for a part that helps the engine breathe better. It's like if you couldn't find the right spot to put a puzzle piece.
The P1099 code is triggered when the vehicle's computer detects a mismatch between the expected and actual positions of the variable valve lift (VVL) system on bank 2.
The P1099 code indicates an issue with the variable valve lift (VVL) system on bank 2 of the engine. This system adjusts the lift of the engine's valves to improve performance and efficiency. The code is set when the engine control module (ECM) detects a discrepancy between the starting and parking positions of the VVL system, which could be due to a sensor error, mechanical fault, or electrical issue.
• Check Engine Light is on
• Reduced engine performance
• Poor fuel economy
• Faulty VVL actuator
• Wiring issues in the VVL circuit
• Defective VVL position sensor
VVL: Variable Valve Lift
ECM: Engine Control Module
• Use an OBD-II scanner to confirm the code.
• Inspect the VVL actuator and wiring for damage.
• Test the VVL position sensor for proper operation.
• Replace the faulty VVL actuator.
• Repair or replace damaged wiring.
• Replace the defective VVL position sensor.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $500
Moderate
• Nissan Altima
• Infiniti Q50
• Honda Accord
• Regular maintenance checks
• Timely replacement of worn components
• Keeping electrical connections clean
Engine Performance
• Avoid hard acceleration until the issue is fixed.
• Schedule a service appointment promptly.
• Monitor fuel consumption for any changes.
Check with the vehicle manufacturer for warranty coverage on engine components.
This code has been reported in vehicles with high mileage or those that have not been regularly maintained.
Moderate – It is advised to address this issue soon to prevent further engine performance problems.
Ignoring this code may lead to increased emissions and reduced engine performance, which could affect vehicle safety.
• Engine at operating temperature
• Vehicle in a stationary position
The VVL system is typically located on the top of the engine, near the valve cover.
Q: What is the VVL system?
A: The VVL system helps control the opening and closing of the engine's valves to improve performance and efficiency.
Q: Can I drive with a P1099 code?
A: It's possible to drive, but it's not recommended as it may lead to reduced performance and efficiency.
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