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 your car that controls how much air gets into the engine on one side. It's like a switch is stuck in the 'on' position.
The P117C code is triggered when the Engine Control Module (ECM) detects a high voltage condition in the Variable Valve Lift (VVL) relay circuit for bank 2.
The VVL system adjusts the lift of the intake valves to improve engine performance and efficiency. Bank 2 refers to the side of the engine opposite to bank 1. A high circuit condition indicates that the voltage in the circuit is higher than expected, which may be due to a faulty relay, wiring issues, or a malfunctioning ECM.
• Check Engine Light is on
• Reduced engine performance
• Poor fuel economy
• Faulty VVL relay
• Wiring issues in the VVL circuit
• Malfunctioning ECM
ECM: Engine Control Module
VVL: Variable Valve Lift
• Use an OBD-II scanner to confirm the code.
• Inspect the VVL relay and its connections.
• Check the wiring for any signs of damage or corrosion.
• Replace the faulty VVL relay.
• Repair or replace damaged wiring.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Nissan Altima
• Infiniti G37
• Nissan Maxima
• Regularly inspect and maintain engine wiring.
• Ensure proper maintenance of the engine control system.
• Replace relays and sensors as needed.
Sensor Issue
• Have a professional mechanic inspect the vehicle.
• Avoid driving the car extensively until the issue is resolved.
Check with your vehicle manufacturer for warranty coverage on engine control components.
This code has been associated with wiring issues and relay failures in vehicles with advanced valve control systems.
Moderate – Addressing this issue can prevent further engine performance problems.
Driving with this code may lead to increased emissions and reduced vehicle performance.
• Engine at operating temperature
• Vehicle in a safe location
The VVL relay is typically located in the engine compartment fuse box or relay panel.
Q: Can I drive my car with a P117C code?
A: It's not recommended to drive extensively with this code, as it can lead to reduced engine performance.
Q: How do I reset the P117C code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is resolved, it should not return.
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