Recently the chasis indicator of my impreza WRX STI ver.9 bought last year has turned on, after a set of power earth cable was installed. However, my car is running normal. I tried to uninstall the cable, but the problem still exists.
I'd my car checked with my engineer and the computer read that there's a problem with the OCV Oil Control Valve. My engineer said that the said parts have seldom got problem even after 10-years operation.
I've recently changed engine oil and the problem still exists. (error code: P1307 and P1309)
Please advice what'll be the reason and a solution.