Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car has a special part that helps the engine breathe better. This code means that part is not getting enough power on one side of the engine.
The VVL (Variable Valve Lift) system adjusts the lift of the engine's valves to optimize performance. This code indicates a low voltage condition in the relay circuit for Bank 2.
The P117B code is triggered when the Engine Control Module (ECM) detects a low voltage condition in the VVL relay circuit for Bank 2. This can affect the engine's ability to adjust valve lift, impacting performance and efficiency.
• Check Engine Light illuminated
• Reduced engine performance
• Poor fuel economy
• Faulty VVL relay
• 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 relay and wiring for damage or corrosion.
• Test the relay for proper operation.
• Replace the faulty VVL relay.
• Repair or replace damaged wiring.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Relay tester
$150 - $400
Moderate
• Nissan Altima
• Infiniti G37
• Nissan Maxima
• Regularly inspect and maintain electrical connections.
• Replace relays at recommended intervals.
• Keep the engine compartment clean and dry.
Engine Performance
• Have the vehicle inspected by a professional if the Check Engine Light is on.
• Avoid hard acceleration until the issue is resolved.
Check with your vehicle manufacturer for warranty coverage on engine components.
This code has been associated with vehicles that have advanced valve timing systems, particularly in models with VVL technology.
Moderate – It should be addressed soon to prevent further engine performance issues.
Driving with a malfunctioning VVL system may not be safe and could lead to increased emissions.
• Engine at operating temperature
• Vehicle stationary
The VVL relay is typically located in the engine compartment, near the fuse box or ECM.
Q: Can I drive with a P117B code?
A: It's possible to drive short distances, but it's best to have it checked to avoid further damage.
Q: What happens if I ignore this code?
A: Ignoring the code can lead to reduced engine performance and increased fuel consumption.
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