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 helps control how the engine breathes, kind of like when you take a deep breath. It's not working right on one side of the engine.
The P1050 code indicates an issue with the Variable Valve Lift (VVL) control circuit in bank 1 of the engine. This system adjusts the height that the valves open to improve engine performance and efficiency.
The VVL system is responsible for adjusting the valve lift based on engine load and speed. The control circuit for bank 1 is malfunctioning, which can affect engine performance. This could be due to electrical issues, a faulty VVL actuator, or other related components.
• Check Engine Light is on
• Reduced engine performance
• Poor fuel economy
• Engine misfires
• Faulty VVL actuator
• Wiring issues in the VVL control circuit
• Failed VVL solenoid
• ECU malfunction
VVL: Variable Valve Lift
ECU: Engine Control Unit
• Use an OBD-II scanner to confirm the code.
• Inspect the VVL actuator and wiring for damage.
• Test the VVL solenoid for proper operation.
• Check the ECU for any related faults.
• Replace the faulty VVL actuator.
• Repair or replace damaged wiring.
• Replace the VVL solenoid if necessary.
• Reprogram or replace the ECU if needed.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Nissan Altima
• Infiniti G35
• Nissan Maxima
• Regular maintenance and inspections
• Timely replacement of worn components
• Ensuring proper engine oil levels
Engine Performance
• Avoid driving aggressively until the issue is resolved.
• Schedule a diagnostic check with a professional mechanic.
Check with your vehicle manufacturer for warranty coverage on engine components.
This code has been commonly reported in vehicles with advanced variable valve timing systems, particularly in models from the early 2000s.
Moderate – It should be addressed soon to prevent further engine performance issues.
Ignoring this code may lead to increased emissions and reduced fuel efficiency.
• Engine at operating temperature
• Vehicle in idle and under load conditions
The VVL actuator is typically located on the engine's cylinder head, near the camshaft.
Q: Can I drive my car with a P1050 code?
A: While you can drive with this code, it's best to have it checked soon to avoid further issues.
Q: Will a P1050 code affect my car's fuel efficiency?
A: Yes, it can lead to decreased fuel efficiency due to improper valve operation.
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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.