Check Engine Light On N Off

[r32J3003]

i had jus done a conversion from rb20det, to rb25det. prior to dis conversion, i alr had check light issue, whcih had same symptom. after conversion, i still hav da same symptom.

i had used a diagnostic tool, n also checked da ecu for faults, but came up nothing.

anyone faced sucha situation b4?

[and3_3]

i have the same problem, mine started when i bought my r33 gtst, it had apparently been run on 100 octane petrol and tuned on it too. I started putting 98 octane petrol in it and it came up. Could be the reason or another tuning issue.

[MR 33]

If its 3 short blinks, i believe thats indicates knocking

[GeeTR]

Stock ECU I assume?

[r32J3003]

yea its runnin stock ecu, n fuel in msia, its runnin on 97 octane only whcih is da only one available in msia.

neways, erm it doesnt jus blink3 times, sometimes it blinks, sometimes it jus stays on... so it jus comes on n off by itself.

when diagnose da ecu, it gives 55 code, which means no error...

any idea?