Hondata

Update
I have checked the entire harness for shorts to ground or power and found no issues.
Pins A-23,24,26 B2 (pg1,2 lg1,2)are all tied together with shield for distributor wires is all tied to ground.
Pins A25,B1, D1(igp1,2, vbu) are the only powers
Sensor ground 1,2 only have ground when ecu is ...

SCS pin D4 is not grounded, it is an empty pin was eliminated from harness.
Thank you spunkster for confirming what I was beginning to think. Care to elaborate on the any number of things it could be? I'm usually pretty good with diagnostic work and researching to figure it out, but this has me ...

Sorry hondata s300v3 in p28. Stock ecu used to compare p06

As the title states the issue is solid CEL with no codes reading while data logging, car runs and drive no issues. Just want to have a properly functioning CEL.Car is a road race car with no factory wiring, complete custom harness, all power needing items ecu, injectors, coil are on switched relay ...