The MIL and 2nd bank of dash doesn't lite up accept the battery light when the ignition is in the on position in turn I didn't know about the P0302 code now it's misfiring bad what's the root cause please help I got the coil for the number 2 cylinder

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At 2800 to 3000 RPM the engine loses power in short intervals with no indicator light showing then tried turning the key to the on position no MIL or other lights besides the battery light then I turn the key three times to the on position and found the code P0302 Please help