P0077 - OBD II Trouble Code

Our automotive experts have put together the following information about the P0077 diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P0077 code.

What Does P0077 Code Mean?

OBD-II Code P0077 is defined as a Intake Valve Control Solenoid Circuit High

The Intake Valve Control Solenoid uses oil pressure and an electrical solenoid to control the position of the exhaust valve. Newer vehicles are equipped with variable valve timing (VVT). This allows the engine control module (PCM) to adjust the opening and closing of the exhaust valve to improve fuel consumption while still providing the performance requested by the driver. When the PCM determines there is an issue with the signal from the Intake Valve Control Solenoid, the PCM will set code P0077.

P0077 Symptoms

• Decreased engine performance
• Engine may not start
• Increased fuel consumption

Common Problems That Trigger the P0077 Code

• Engine oil level is too low
• Exhaust valve control solenoid failure
• Powertrain Control Module (PCM) failure
• The engine oil does not meet the manufacturer's requirements
• Wiring issue

Common Repairs Needed for the P0077 Code

• Oil and Filter Change