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 computer in the car is getting a weak signal from a sensor that helps control how the engine runs. It's like when a flashlight's battery is low and the light is dim.
The P1022 code indicates that the voltage supply to the Variable Valve Lift (VVL) sensors on Bank 2 is lower than expected, which can affect engine performance.
The VVL system adjusts the lift and duration of the engine's intake and exhaust valves to optimize performance and efficiency. The sensors require a specific voltage to operate correctly. A low voltage condition can cause the system to malfunction, leading to suboptimal engine performance.
• Check Engine Light is on
• Reduced engine performance
• Poor fuel economy
• Faulty VVL sensor
• Damaged wiring or connectors
• Faulty power supply to the sensor
VVL: Variable Valve Lift
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Check the voltage supply to the VVL sensors.
• Replace the faulty VVL sensor.
• Repair or replace damaged wiring or connectors.
• Ensure the power supply to the sensor is functioning correctly.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Nissan Altima
• Infiniti G35
• Nissan Maxima
• Regularly inspect and maintain engine wiring.
• Ensure sensors are clean and functioning.
• Perform routine engine diagnostics.
Sensor Issue
• Avoid hard driving until the issue is resolved.
• Have the vehicle checked by a professional mechanic.
• Do not ignore the Check Engine Light.
Check with the vehicle manufacturer for warranty coverage on the VVL system.
This code has been associated with issues in vehicles with advanced variable valve timing systems, particularly in models from the early 2000s.
Moderate – While the vehicle may still be drivable, it is recommended to address the issue to prevent further engine performance problems.
Driving with a malfunctioning engine sensor can lead to increased emissions and may not comply with local environmental regulations.
• Engine at operating temperature
• Vehicle in park or neutral
The VVL sensors are typically located on the cylinder head near the camshaft.
Q: Can I drive with the P1022 code?
A: It's possible to drive, but it's not recommended as it can lead to further engine performance issues.
Q: How can I prevent this code from appearing?
A: Regular maintenance and inspections can help prevent wiring and sensor issues.
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