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 part of the car that controls how the engine breathes. It's like when a toy's battery is too strong and makes it work too hard.
The VVL (Variable Valve Lift) system helps the engine run better by adjusting how the valves open and close. This code indicates that the voltage going to the motor that controls this system is too high.
P1055 indicates a high voltage condition in the Variable Valve Lift (VVL) control motor circuit on Bank 1. This could be due to a fault in the wiring, a malfunctioning control motor, or an issue with the power supply to the motor.
• Check Engine Light is on
• Reduced engine performance
• Rough idling
• Faulty VVL control motor
• Wiring issues such as short circuits or open circuits
• Faulty power supply or relay
VVL: Variable Valve Lift, a system that adjusts the lift of the engine's valves.
Bank 1: Refers to the side of the engine with cylinder 1, typically the driver's side in a V-engine.
• Use an OBD-II scanner to confirm the code.
• Inspect the VVL control motor and related wiring for damage.
• Check the voltage supply to the VVL control motor.
• Replace the VVL control motor if faulty.
• Repair or replace damaged wiring or connectors.
• Replace faulty power supply components or relays.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Nissan Altima
• Nissan Maxima
• Infiniti G35
• Regular maintenance checks
• Ensure proper battery voltage levels
• Inspect wiring for wear and tear
Engine Performance
• Avoid driving at high speeds until the issue is fixed.
• Consult a professional mechanic for diagnosis and repair.
Check with the vehicle manufacturer for warranty coverage on engine components.
This code is commonly associated with Nissan and Infiniti vehicles using VVL technology.
Moderate – This issue should be addressed soon to prevent further engine performance issues.
Driving with this code may lead to reduced engine performance and increased emissions.
• Engine at operating temperature
• Vehicle at idle
The VVL control motor is typically located on the engine's cylinder head, near the camshaft.
Q: Can I drive with a P1055 code?
A: It's not recommended to drive for long periods with this code, as it can affect engine performance.
Q: How can I reset the check engine light after fixing the issue?
A: You can use an OBD-II scanner to clear the code after repairs are made.
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