Hey,

I finally was able pull the flash codes from OBDII port and I even took a video of it. Can someone please read the flashes for me if I send the video?

I have been having issues with the car for weeks since I replaced the 12 volt. Check engine light, stuck in limp mode, replaced all fuses, etc..

Thanks Larry

 

Okay, these are the flash codes I pulled from the check engine and IMA lights:

Engine:
30 and 69

IMA
35 and 55

Can someone help me understand them Thanks

 

Not sure how I missed this.

CEL 30, U0101 A/T FI Signal A/B Circuit Malfunction
CEL 69, P1600 IMA System Malfunction
IMA 35, does not exist in the Honda Service manual
IMA 55, U0100 ECM Signal Circuit Problem

Based on that, I would first say you have a weak/failing 12V.

If it's not that, the IMA codes say you have an open wire or short between the ECM and MCM. If it's not that, you have a failed MCM.

The CEL codes say you have a bad ECM or TCM.

So you either have a failed MCM AND a failed TCM, or you have a failed ECM. My money is on you having a bad ECM, which is also supported by the bogus code (assuming you didn't mis-count, and I haven't just missed it).

IMHO, you should get a Honda service manual on CD from eBay. They're around $50 and worth every penny.

 

Thank you for the breakdown in the codes. Just to make sure I understand, ECM that sits next to hybrid battery? Or the ecm under the glove box? Where is the mcm located? What is the TCM?

 

ECM = Engine control module
MCM = motor control module - by the hybrid battery.
TCM = Transmission control module

Locations below:

 

Thank you for the illustrations. Question? Can I send you a video of what my car is doing so you have a better idea? No more then two meg in size. I can send it through email.

Larry

 

Upload to youtube and post link here.

 

I don’t have a you tube account. I will check into it.

 

Hello here is the link for YouTube.

 

Unfortunately, the video adds nothing diagnostically other than to confirm you're having symptoms related to BOTH transmission and IMA. The codes tell more than that, and the behavior seems consistent with those codes.

The one component in common is the ECM.

Again, buy a manual:

https://www.ebay.com/itm/2003-2004-2...item23564ec1dd

Specific diagnostic steps are no more complicated than checking resistance/voltage with a multimeter. End result for everything is essentially:

Repair broken wire.
Repair short
Update computer or replace computer with known good.

$37.77, and you can fix your own problem.