As we all know the newer Subaru's are having issues with the VVT system storing the data in EEPROM and we cannot clear that data without changing the ECM or performing EEPROM work…. until now.
Subaru TSB 02-163-16r states that ECM replacement is required to resolve this.
We finally have a solution available replacing the ECM.
Start with the key off, install a fuse in the underhood fuse panel for inspection mode (this location varies by year but it should be listed in service information), turn the key on and you will likely hear the cooling fans cycling, using a launch or autel (there may be other tools that work) connect to the ECM and go to special functions, there is a option to change test mode, Click that option and the check engine light will start flashing, go back and clear codes while test mode is active, turn key off and remove inspection fuse from underhood fuse panel, turn key on and verify the values have reset.
We have verified that this works on vehicles from 2015, 2016 and 2019 so far with good values and with values out of range.
I'd like to thank Robbie Magill who shared a similar process for resetting learning misfire profile on timing belt engines that led me to try it on these engines. I gave up when it didn't work but recently Rob Dotterer was talking about what I had tried with Joe Bonino. Joe took it a step further to find the missing piece of the puzzle which was activating test mode in the scan tool after the inspection fuse was installed. Now we have a solution to reset these vehicles
Here is my video showing the process
Note- I'm still researching the method for BRZ/FRS/86 resets
