VFRDiscussion ARCHIVE / READ-ONLYREAD-ONLY

'98 FI code 23?

5 posts Started 8 Jun 2024 Last recovered post 11 Jun 2024 Wayback Machine snapshot 16 Jun 2024

#1

Hello all, 


New owner/member here so please excuse if this was already discussed in a different topic(didn't see one a first glance).

I have a 98 model(Europe) which I bought 2 months ago, last night when changing the dashboard bulbs to LED I noticed that the FI bulb was missing and I swapped that with the HiBeam one.

Lo and behold FI code pops in: 2 long flashing 3 short ones(which should be 23?). According to the service manual(gen V)here there isn't a corresponding code to that but searching for that Honda code online shows that it's an O2 heater issue, which my by doesn't have.

The bike runs ok-ish, although it's a bit sluggish under 3k RPM. Any ideas are more than welcome.

#2

The VFR does run sluggishly below 3k anyway. I'd suggest clearing the fault register and seeing if the fault comes back.

#3

Thanks, Terry, I tried yesterday to clear the error but they came back.

Investigating further I've noticed that the ECU has a different following PN: 38770-MBG-611  which according to this topic

is for a German/Anniversary edition which does have the O2 sensors. I would try to do a O2 delete but I need to know what are the pins for those sensors.

If anyone has the pinout diagram of the ECU I would try to do the o2 delete on the ECU connector.

#4

Does your investigation imply that the original ECU has been replaced. If so, would fitting a correct ECU be a better option. I only suggest that as there may be other parameters that were changed in the GE anniversary edition?

#5
CaptPLG, 6/8/2024 at 7:22 PM

Lo and behold FI code pops in: 2 long flashing 3 short ones(which should be 23?). According to the service manual(gen V)here there isn't a corresponding code to that but searching for that Honda code online shows that it's an O2 heater issue, which my by doesn't have.

For Info - The Service Manual has a Typo error and lists a DTC of 24 instead of the correct code of 23. The Reference of Page 5-52 is for the correct Code 23. See attached.

[image: Screenshot_20240611_163446_Adobe Acrobat.jpg]

End of thread · 5 posts recovered Wayback Machine snapshot 16 Jun 2024