Essentially, the car's computer (PCM) has detected a malfunction in the electrical circuit that controls the VVT solenoid for that bank. This solenoid is responsible for adjusting the timing of the intake or exhaust valves to optimize engine performance and efficiency. A faulty solenoid can lead to reduced power, rough running, poor fuel economy, and potentially even engine damage if left unaddressed.
The problem could be due to a faulty solenoid itself, a short circuit in the wiring, a bad connection, or even a problem with the PCM. A proper diagnostic by a mechanic is required to pinpoint the exact cause. Simply replacing the solenoid might not fix the problem if there's a wiring fault or a PCM issue.
