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Old 05-08-2019, 09:09 AM
geenee71879 geenee71879 is offline
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Join Date: Oct 2017
Location: Taiwan
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Default WRX FA20DIT failsafe issue

Hi Richard or anyone having the experience, please help

I had the aquamist HFS-4 system on my WRX FA20DIT working great for some time now, however recently I am getting error code from ECU because of the fail safe(I think) and I have no clue if it is the controller malfunctioning causing the issue.

When I turn on my ignition the failsafe LED would come on, and I get P0245 error code.
If I disable the fail safe, everything works fine. I tried few mountain runs and it seem the system is spraying water/meth properly. (AFR reading is fine)

Could you help me to troubleshoot this? or is it the fail safe on the controller not working well?

Thanks
Jimmy
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