Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is confused because the sensors that help control how the engine breathes on one side of the engine aren't giving the right signals.
The VVL (Variable Valve Lift) system adjusts the lift of the engine's valves for better performance and efficiency. This code indicates a problem with the plausibility of the sensor readings on Bank 2.
P1018 is triggered when the Engine Control Module (ECM) detects an implausible signal from the Variable Valve Lift sensors on Bank 2. This could be due to incorrect sensor readings or a fault in the VVL system.
• Check Engine Light is on
• Reduced engine performance
• Poor fuel economy
• Faulty VVL sensor
• Wiring issues or poor connections
• Faulty ECM
VVL: Variable Valve Lift
ECM: Engine Control Module
• Use an OBD-II scanner to confirm the code.
• Inspect the VVL sensor and connections on Bank 2.
• Test the wiring and voltage to the sensor.
• Replace the faulty VVL sensor.
• Repair or replace damaged wiring.
• 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 and inspections
• Ensure proper oil levels and quality
• Address any engine issues promptly
Sensor Issue
• Do not ignore the Check Engine Light.
• Seek professional diagnosis if unsure.
• Avoid driving aggressively until fixed.
Check your vehicle's warranty for coverage on engine components.
P1018 has been associated with vehicles using advanced VVL systems, especially in models from the mid-2000s onwards.
Moderate – It affects engine performance and efficiency, but immediate repair is not critical unless symptoms worsen.
Driving with this code may not be illegal, but it can lead to increased emissions and reduced engine performance.
• Engine at operating temperature
• Vehicle in idle or low-load conditions
The VVL sensors are located on the cylinder head of Bank 2, which is the side of the engine opposite to Bank 1.
Q: Can I drive with a P1018 code?
A: It's possible, but not recommended as it can lead to poor performance and fuel economy.
Q: What does Bank 2 mean?
A: Bank 2 refers to the side of the engine opposite to Bank 1, typically on V-type engines.
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