I've been repeatedly getting these trouble codes and I need some advice on how to resolve it. They always appear as History codes, though that doesn't surprise me in this case.

B0 RFA – U1096 H (Loss of Communications with PCM)
B0 RFA – U1064 H (Loss of Communications with BCM)
B0 RFA – U1016 H (Loss of Communications with IPC)

I believe this is related to communications with my FOB? I've had problems with them being "flaky" in the last few years, sometimes requiring multiple presses to get the doors to unlock, and sometimes one side unlocking but not the other (of course I know it takes two presses to unlock the passenger side). New batteries didn't help. I had to completely reprogram (not re-sync) one of my FOBs last year when it failed completely (again, new battery didn't help), and it's worked since then although continuing to be somewhat flaky, but no better or worse than before it failed.

I discovered that the FOBs tend to forget their programming and ultimately stop working after several years, especially with the 2000's which mine is. So in hopes of getting rid of the occasional flakyness and to get back to having 2 working FOBs again, I ordered a brand new FOB from GMPartsHouse.com a few weeks ago. I reprogrammed it when it arrived a couple weeks ago and it's worked fine, though I believe the occasional flakyness has continued with the new one.

Bottom line, the car is still throwing the codes with a new FOB. What could be wrong on the car side to be generating the codes and causing the flakyness?

TIA

 

Have you had your car battery disconnected?

If not those could be caused by bad grounds...

Peace
Chip

 

Nope, and no dead battery between the last time I cleared the codes and the last time I checked them. Battery is in pristine condition visually.

Thanks Chip... anyone else? I'll see if I can narrow down the circumstances any more, to see if it happens every time I try to use the FOB, or every time I drive the car, etc..

 

Try this site for the codes

http://www.digitalcorvettes.com/foru...ad.php?t=56027

Good luck.

 

with Chip

Those codes are loss of comms codes normally caused by a power spike. The fobs communicate with the RFA. The RFA then sends signals to the individual computers. In other words your comms glitch is on separate data buses. The power supplies are the common factor.

Its either battery or grounds I'd say.

 

Forgive my ignorance, you're referring to the car battery and the ground for the car battery? I assume there isn't a battery in the RFA itself correct? The car battery itself is only a couple years old and as I mentioned, looks pristine. The car has been driven regularly but very moderately and has not sat for months at a time. I have no other issues so that seems unlikely to me, though of course I can be wrong. The cables are definitely very secure at the battery end.

What's the best/easiest way to troubleshoot the problem? I'm on crutches and my mobility is very limited. For my own curiousity, can someone describe what the RFA looks like and where it's located?
TIA

 

Remember, you asked...

Seriously, this is something you can do yourself

Here is a good write up Bill did
http://forums.corvetteforum.com/show...hlight=grounds

Peace
Chip

 

Thanks Chip