Hondata

Civic ej2
D16z6 turbo
P28 with s300v3 (57637)
Aut. Arness
Rc750 injectors with resistance box

Good day, I need to know how to repair my ECU. the fault it presents is that it reads the ECT sensor wrong, negative numbers and small jumps from positive numbers to negative numbers, I assume that it is my p28 that presents a fault, it is p28 with hondata s300v3. i tried another ecu with demon II and the fault does not appear in that ecu. some help?

I changed the sensor and it's still the same, showing negative numbers. check the wiring and it seems to be ok, any ideas?

It sounds like you need to replace the ECU. We do not repair ECU's.

The s300v3 isnt the problem?

No, this would not be from the s300.

Do you think that if i change the capacitors fix the problem? Thank you so much

You can try, but probably not.