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 a part in your car that helps control how air gets into the engine. It's like a switch that isn't working right, and it's making it hard for the car to 'breathe' properly.
The P0077 code indicates that the intake valve control solenoid circuit for Bank 1 is experiencing a high voltage condition.
The intake valve control solenoid is responsible for adjusting the timing of the intake valves to optimize engine performance. When the control module detects a higher than expected voltage in the solenoid circuit for Bank 1, it triggers the P0077 code. This can affect engine efficiency and performance.
• Check Engine Light is on
• Reduced engine performance
• Poor fuel economy
• Faulty intake valve control solenoid
• Wiring issues such as open or short circuits
• Faulty Engine Control Module (ECM)
Solenoid: An electromechanical device that converts electrical energy into mechanical movement.
ECM: Engine Control Module, the computer that manages engine operation.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the intake valve control solenoid for proper operation.
• Replace the intake valve control solenoid.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Socket set
$150 - $400
Moderate
• Honda Accord
• Toyota Camry
• Ford F-150
• Regular maintenance checks
• Ensure proper electrical connections
• Use quality engine oil
Engine Performance
• Avoid driving long distances until the issue is fixed.
• Consult a professional mechanic for accurate diagnosis.
Check with your vehicle manufacturer for warranty coverage on engine components.
This code has been associated with issues in vehicles with variable valve timing systems since the introduction of advanced engine management systems.
Moderate – It affects engine performance but is not immediately critical.
Driving with a malfunctioning engine control system can lead to increased emissions and may be illegal in some areas.
• Engine at operating temperature
• Vehicle in idle or low-speed operation
The intake valve control solenoid is typically located on the engine's cylinder head, near the intake manifold.
Q: Can I drive my car with a P0077 code?
A: It's possible to drive, but it's not recommended as it can lead to further engine damage and reduced performance.
Q: How is the intake valve control solenoid tested?
A: A multimeter can be used to check the solenoid's resistance and ensure it's within the manufacturer's specifications.
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