Anyone encounter this code or know how to fix. Best I can tell is problem with voltage/spark to # 5 cylinder per friends Chilton book. Doesn't provide info on how to diagnose/fix.

I changed plugs & probably with change coil on that cylinder....

wanted to ask for advice/assistance before doing any more work.

Any help is much appreciated. Thanks, Greg

 

Double-check the code. If 115 is counting the CEL blinks, my shop manual says DTC 115 is A/T 3rd Signal (A/T cannot be shifted into 3rd gear, but circuit is good)

If code is P0115 as read by Nissan's CONSULT tool, that is Coolant Temp Sensor.

Cylinder 5 misfire is P0305 or DTC 64.