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 detected a problem with the system that controls how the engine's valves open and close. It's like a switch that isn't working right because too much electricity is going through it.
The P105A code indicates that the internal control module has detected a high current condition in the Variable Valve Lift (VVL) system.
The P105A code is triggered when the Engine Control Module (ECM) detects that the current in the Variable Valve Lift (VVL) system is higher than the expected range. This could be due to a short circuit, a faulty VVL actuator, or a malfunctioning control module.
• Check Engine Light is on
• Poor engine performance
• Reduced fuel efficiency
• Short circuit in the VVL wiring
• Faulty VVL actuator
• Defective control module
VVL: Variable Valve Lift
ECM: Engine Control Module
• Use an OBD-II scanner to confirm the code.
• Inspect the VVL wiring for shorts or damage.
• Test the VVL actuator for proper operation.
• Repair or replace damaged VVL wiring.
• Replace the faulty VVL actuator.
• Replace or reprogram the control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $600
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regularly inspect and maintain engine wiring.
• Ensure proper VVL system operation during routine maintenance.
• Use quality replacement parts.
Engine Performance
• Have the vehicle inspected by a professional mechanic.
• Avoid driving the car aggressively until the issue is resolved.
Check with your vehicle manufacturer as this may be covered under the powertrain warranty.
This code has been associated with issues in vehicles equipped with advanced valve control systems, often appearing in models with high mileage.
Moderate – It should be addressed soon to prevent further engine performance issues.
Ignoring this code may lead to increased emissions, which could violate local emission laws.
• Engine at operating temperature
• Vehicle stationary
The VVL actuator is typically located near the top of the engine, connected to the camshaft.
Q: Can I drive my car with a P105A code?
A: It's not recommended to drive for long periods with this code, as it may lead to further engine issues.
Q: Will the Check Engine Light go off by itself?
A: The light may turn off if the issue resolves itself, but it's best to have it checked to prevent future problems.
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