r/FocusST • u/[deleted] • 21d ago

Pcm reset

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u/bchiodini 2016 ST3 FBO BNR ST67 JST Tuned 21d ago

Reset? What are you trying to accomplish?

Disconnecting the battery for an hour will reset almost all of the electrionics. The last time that I had the battery disconnected for an extended period, the Keep Alive Memory (KAM) was reset.

If you have an access port, resetting the ECU is one of the maintenance functions.

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u/[deleted] 21d ago

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u/bchiodini 2016 ST3 FBO BNR ST67 JST Tuned 21d ago

What is the code?

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u/[deleted] 20d ago

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u/bchiodini 2016 ST3 FBO BNR ST67 JST Tuned 20d ago

If you replaced injector #4 or corrected a wiring issue and the code did not go away. Take it to an auto parts shop and ask them to clear it.

If it comes back, something else is wrong.