P0078 - Exhaust Valve Control Solenoid Circuit (Bank 1)
Variable Valve Timing systems are used to alter the camshaft angular position in relation to the Crankshaft. The ECM will control an actuator which is used to alter the valve timing.
Fault Code Explained
This fault code indicates an undefined fault with the control solenoid circuit.
This fault could be due to the following:
- Open Circuit
- Short Circuit
- Poor Connections / High Resistance
- Faulty Solenoid