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There is no Fuse on the HR harness, there under your dash and in your engine bay.

How does the wiring on your O2 sensor look?

Have you tested your ECU in another car?

Open the ECU case and see if it smells burnt, usually if you damage the ECU it gets a toasty smell to it.

What have you done to the car recently?
 

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Any updates?

So it says connected / off line in the lower left corner?

I think you need to test the ECU in another car to determine if it is damaged or not.

If it says ignition OFF you need to check E9 on our conversion harness for 12v with the key on. When this wire receives 12v the ECU will say Ignition on.

Hope that helps.
 
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