i got engine light.(P2096 and P2196) P2196 is gone.still on P2096...

What is your question?

i went the shelly bmw..they said you change the ignition coil. so replaced the six coils. But still light on and off.also they checked oxyen sensor.oxyen sensor workig good.my local mechanic said lazy oxyen sensor.. you have to change front 2 oxyen sensor.i dont know what is going on... Can you help me?