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 the car's computer found a problem with the system that helps control how the engine breathes. It's like the computer's watchdog noticed something unusual with the engine's temperature sensor or control module.
The P1071 code indicates an issue with the Variable Valve Lift (VVL) control module or its temperature sensor on Bank 1 of the engine.
The VVL system adjusts the valve lift in the engine to improve performance and efficiency. The control module monitors the system's operation, including its temperature. A P1071 code is triggered when this module detects a fault, either in its internal watchdog function or the temperature sensor, which could affect the engine's performance.
• Check Engine Light is on
• Reduced engine performance
• Increased fuel consumption
• Faulty VVL control module
• Defective temperature sensor
• Wiring issues or poor connections
VVL: Variable Valve Lift
OBD-II: On-Board Diagnostics, second generation
• Use an OBD-II scanner to confirm the code.
• Inspect the VVL control module and temperature sensor for damage.
• Check wiring and connectors for any loose or corroded connections.
• Replace the faulty VVL control module.
• Replace the defective temperature sensor.
• Repair or replace damaged wiring or connectors.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Honda Accord
• Nissan Altima
• Toyota Camry
• Regular maintenance checks
• Ensure proper engine oil levels
• Inspect electrical connections periodically
Sensor Issue
• Avoid driving aggressively until the issue is resolved.
• Schedule a service appointment with a qualified mechanic.
Check your vehicle's warranty to see if the VVL system is covered.
This code is relatively uncommon and usually indicates a specific issue with the VVL system in certain models.
Moderate – It should be addressed soon to prevent potential engine performance issues.
Ignoring this code could lead to decreased fuel efficiency and potential engine damage.
• Engine at operating temperature
• Vehicle running under normal conditions
The VVL control module is typically located near the engine, often close to the valve cover.
Q: What does VVL stand for?
A: VVL stands for Variable Valve Lift, which adjusts how much the engine's valves open.
Q: Can I drive with a P1071 code?
A: It's not recommended to drive for long periods with this code, as it can affect engine performance.
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