Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's engine has a part that helps it run better, but it's getting too hot, which can cause problems.
This code indicates that the Variable Valve Lift (VVL) system's control motor is experiencing high temperatures, which can lead to system malfunction.
The P1077 code is triggered when the Engine Control Module (ECM) detects that the temperature of the Variable Valve Lift (VVL) control motor on Bank 1 is higher than the specified threshold. This could be due to excessive load or a malfunction in the motor or its control circuit.
• Check Engine Light is on
• Reduced engine performance
• Unusual engine noises
• Faulty VVL control motor
• Electrical issues in the VVL circuit
• Overloading of the VVL motor
VVL: Variable Valve Lift
ECM: Engine Control Module
• Use an OBD-II scanner to confirm the code.
• Inspect the VVL control motor and wiring for damage.
• Check the temperature sensor readings.
• Replace the VVL control motor if faulty.
• Repair or replace damaged wiring in the VVL circuit.
• Ensure the cooling system is functioning properly.
• OBD-II scanner
• Multimeter
• Thermal imaging camera
$200 - $500
Moderate
• Honda Accord
• Acura TL
• Honda CR-V
• Regularly maintain the cooling system.
• Inspect electrical connections periodically.
• Avoid overloading the engine.
Engine Performance
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional mechanic.
• Avoid heavy loads until the issue is resolved.
Check with your vehicle manufacturer for warranty coverage on engine components.
This code is often associated with vehicles that have advanced variable valve timing systems, which can be sensitive to temperature changes.
Moderate – Addressing this issue promptly can prevent further engine damage.
Driving with a malfunctioning VVL system can lead to increased emissions and potential engine damage.
• Engine at operating temperature
• Vehicle in idle or low-speed conditions
The VVL control motor is typically located near the top of the engine, connected to the camshaft.
Q: Can I drive with a P1077 code?
A: It's not recommended, as it can lead to further engine damage.
Q: What happens if I ignore this code?
A: Ignoring the code can cause reduced engine performance and potential long-term damage.
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