Whats up my guys, so I got a P0021 code again which is timing over advanced. So like last January this weird noise came up like a rattle in my engine bay. The sound is normally present under light load at around 2k RPM's. If the pressure on the gas is perfect then it is present under cruise Never under WOT. Also sometimes when going from a stop or reversing. 3 weeks later I got a oil change but then after the oil change it drove fine, no sound. Now the sound is back and I got the same code P0021 which is timing over advanced / camshaft positioning. Either way I watched videos and read forums and ppl keep saying that it is sometime caused by the engine eating up the oil… so I’m guessing that another oil change will fix it but I’m not due for another for around 3.5k miles… Should I get like the oil filter or the solenoid or a gasket checked or something?

I am also on my factory timing belt which obviously could be the problem at 112k miles.

2011 WRX with 112k miles (yea.... I know...)

Thanks in advance