What is P0079 fault code and what does it mean? What is the Exhaust Valve Control Solenoid Circuit Low, Bank 1 malfunction description? How can you fix P0079 fault code What are the causes and symptoms of the P0079 error code?
What is the P0079 Fault code? What does it signify?
If the powertrain control module, PCM detects that the voltage signal coming from the exhaust valve solenoid circuit is below predetermined parameters, a code P0079 will be set. The engine row containing cylinder 1 is called “Bank 1” in this definition. The exhaust valve solenoid is typically mounted on the exhaust manifold end of the cylinderhead.
The modern vehicle’s PCM controls the timing of the intake/exhaust valves opening and closing using the variable valve timing (VVT). The actuator(s), mounted on the end the camshaft(s), allows it to do this. It controls an actuator to regulate oil pressure. To monitor and control the solenoid, the PCM uses a pulse width modulated (Pulse Wth Modulation/ PWM). A code P0079 will be issued when the PCM detects the voltage signal coming from the bank 1 exhaust solenoid control solenoid falls below predetermined parameters.
What causes the P0079 Fault code?
- – Bank 1: Defective exhaust valve control solenoid
- – Short circuit, damaged cables, and loose connections
- – Low engine oil
- – Using engine oil with a low viscosity.
- – Defective PCM (rarely)
What are the symptoms for P0079 fault code?
- – Illumination for the check engine light
- – Hesitation during acceleration
- Problems with engine performance
- – An increase of fuel consumption
How to Fix the P0079 Fault Code
It is possible that the repair and definition of fault code P0079 will differ depending on the vehicle model. Vehicle VVT systems and methods may vary. It is important to read and follow all manufacturer instructions before replacing any component.
- – To determine if codes will return, it is important to first clear them all.
- – The harness should be inspected if the code is returned. It is important to repair and clean any broken or damaged cables or loose connections.
- – Check the engine oil. If it is not there, you should replace it.
- – If the solenoid for exhaust valve control bank 1 is damaged, it should be replaced.
How Serious Is the P0079 Fault Coding?
This code can cause the check engine light to come on, which is the most serious problem. You can disable the VVT system and cause the engine to go into failsafe mode. This can result in slow acceleration and high fuel consumption. To prevent further damage to your engine, it should be repaired as soon as possible.
