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 there's a problem with the electricity that helps control a part of the engine that makes the car go faster or slower. It's like when a toy doesn't work because the batteries are not connected properly.
The VVL (Variable Valve Lift) control motor supply voltage circuit is not functioning correctly, affecting the engine's ability to adjust valve lift.
The P1057 code is triggered when the Engine Control Module (ECM) detects a malfunction in the voltage supply circuit to the Variable Valve Lift (VVL) control motor on Bank 1. This circuit is responsible for providing the necessary electrical power to the motor that adjusts the valve lift, which is crucial for optimizing engine performance.
• Check Engine Light illuminated
• Reduced engine performance
• Poor fuel economy
• Engine misfire
• Faulty VVL control motor
• Damaged wiring or connectors in the VVL circuit
• Blown fuse related to the VVL circuit
• Faulty ECM
VVL: Variable Valve Lift
ECM: Engine Control Module
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors of the VVL control motor circuit for damage.
• Check the fuse related to the VVL circuit.
• Test the VVL control motor for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the blown fuse.
• Replace the faulty VVL control motor.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Nissan Altima
• Infiniti G35
• Nissan Maxima
• Regular maintenance checks on electrical systems
• Ensure proper battery voltage
• Inspect wiring and connectors regularly
Engine Performance
• Avoid driving aggressively until the issue is fixed.
• Have the vehicle inspected by a professional mechanic.
Check with the vehicle manufacturer for specific warranty coverage related to engine components.
The P1057 code has been associated with vehicles that utilize advanced valve timing systems, becoming more common as these technologies are adopted.
Moderate – The vehicle can still be driven, but performance may be affected, and it should be repaired soon to prevent further issues.
Driving with a malfunctioning VVL system may lead to increased emissions and reduced performance, which could affect compliance with emissions regulations.
• Engine at operating temperature
• Vehicle stationary with ignition on
The VVL control motor is typically located near the top of the engine, often integrated into the cylinder head assembly on Bank 1.
Q: Can I drive with a P1057 code?
A: Yes, but it's not recommended for long periods as it can affect engine performance and fuel efficiency.
Q: What happens if I ignore the P1057 code?
A: Ignoring the code can lead to decreased engine performance and potentially more severe engine issues over time.
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Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
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Fitment Required · Vehicle-fitment part
Commonly relevant for misfire, ignition-efficiency, and some drivability-related repairs.
Misfire and ignition-related faults commonly involve spark plugs as part of the repair path.
Check the correct plug type, gap, and engine application for your vehicle.
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Fitment Required · Vehicle-fitment part
Relevant when the fault points toward ignition-coil performance or cylinder-specific ignition issues.
Some ignition faults involve coil performance or cylinder-specific coil problems.
Match the coil to your engine and confirm the failed component before ordering.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.