Disassemble your spark plugs and take care of the order in which they are mounted, check each of them and observe which present some abnormality. In this situation seeks which are black or wet of gasoline, this to determine whether or not there is a good spark.
Before this you should have proven your fault code, that is, that you read codes / stories codes / you check out which of the codes are generated again. I measure this because for what you mention your codes they tell me that there are problems in the circuit of coil 1 and 3, but those are activated (as the companion said) with an active signal at the same time 1 and 4 and with another active signal to 2 and 3 at the same time, since they are a package together with 2 coil. This leads me to explain that if a Bobina T is wrong, it should indicate failure in the 1-4 or 2-3 coil circuit.
I hope to help friend, and if you serve your experience