Replaced battery, now left side fan is running at 7,000rpm constant.

Hello forums folk,

I've seen this issue somewhat addressed on here a few times. If I had seen a fix I would not be writing this!

So a few days ago I performed a battery replacement - I followed the guide on this site to a T, and took my sweet time. Upon start up I noticed the left side fan whir to a pretty aggressive start. I have reset the SMC, and NVRAM numerous times to no avail. I just received a replacement fan (from ifixit as well) and just installed it only to have the same issue. My mac fan speed at shows roughly 7,000rpms at all times on the left fan and it will not take to any custom speed input.

At a loss here guys and gals, initially did this to save time and money - can't really afford to give my only computer to Apple for 2-3 weeks, but now here I am and its seeming like I don't have much of a choice.

Any thoughts, tips, tricks, are more than welcome - thank you!

EDIT* diagnostic check shows

"there may be an issue with the fan. Reference Code: PPF004. Additional reference code PPF003"