Hondata

2009 FA5
FP-SI-US-13138

Vehicle threw VSA warning lights (constant on). Had battery voltage checked, disconnected/reconnected battery and wanring light still remained. Reflashed back to stock, drove around for a week to see if it cleared up before i take it to the dealer for an explanation (maybe a bad roll/yaw sensor or some such). Reflash triggered CEL/DTC P062F EEPROM Internal Control Module Error. Off I went to the dealer. Dealer could not access the ECU, so i came over and unlocked the flashpro from the car, still no luck. Hondas proprietary scan tool requires the ECU identify itself via its VIN, apparently my ECU has forgotten its name. They can dive into the ECU with a snap-on tool but then im coming purely out of pocket because even if its a sensor covered by the unvoided parts of my warranty, they need to use the honda proprietary tool to send that information to honda and verify it as a warranty claim.

So...How does daddy teach his ECU to tell the nice men at Pensacola Honda what its VIN is?

Also, dealer did not charge me a dime for the time they spent trying to read the cars digital brain. Just uploaded previous calibration and CEL has disappeared but VSA lights still remain. Checking the in cabin and underhood fuses in a little bit.

If there are no other errors and just the VSA light is on then you may just need to drive the car to clear the vsa errors. It sounds liek you ECU may have been in recovery mode or has been damaged. But since all other errors are now gone then it sound like the VIN will be able to be read propelry.

That would make sense in light of the fact that I had a mysterious completely dead battery on the way to work shortly before this happened. Mysterious as in the car started completely normally, was driven 8 miles to work and when i shut off the car at work it was if the car had been running purely on the battery the entire way there, needed jumper cables just to close my windows. But then the car started on the first crank without a jump that afternoon after work.

Any estimate on home many driving cycles it may take for the ecu to self diagnose itself as fine?

It may also be something the dealer has to reset if it does not clear on it's own.

ty