OFT error, help needed
 

I got an error shows an error occured while writing to the ECU Please try again. I think it may cause dislodging of the OBD2 cable. My car cannot start right now and there is no (*) on my current file. I think the ECU file may broken so OFT cannot identify the current file in ECU. Does anyone know how to solve this problem? Thanks!

check the obd connection, some cars have intermittent obd connections.

try putting some forwards or backwards pressure on obd connector on car bay use rubber band to get a connection, then look at fixing obd socket.

make sure cable is plugged in propertly at oft end as well.

make sure car battery is charged and the your turning ingnition full on (do not start) when flashing not just accessory position

Thanks man! I'll check them tomorrow. But I think there is no problem with obd connector because all other functions are worked. Do you think there have some other problems cause the OFT cannot flash the ECU?

First thing that happens with reflash is original rom in car erased then new one flashed. if process interrupted then you end up with no usable rom in ecu and car wont start.

Try reflashing your stock rom back to car.

oft will be interactive if it get power from car via obd port but logging and flashing will not work if rom is incomplete or no data communication with ecu due mayne the data pins not making good contact in obd connector but power pins ok

did you make any changes to the tuned rom with romraider ??

Yes, I just did launch control before. I changed UEL header today, and then I try to flashing oft stg2 uel 93oct file into the ECU. OFT shows I complete flashing but I can't start my car. After that I try to reflashing to the stock file, then OFT shows error.

Do I need to use other device to reflashing stock rom or I can just use my OFT to reflashing?

You use OFT, it should've read the stock one at the beginning

Thanks, I'll try it tomorrow. I just want to make sure OFT can flashing the ECU if file in ECU that incomplete.

hmm does not sound good have a read of the romraider tips link below.

http://www.ft86club.com/forums/showthread.php?t=79152

when you changed lc\ffs parameters were the boxes on romraider black with no data or green ?????

post up the definition and your rom file

If you have used incorrect def file to edit it likely written a corrupt rom to ecu.

Use the oft to write bact the Original File to the ecu the one in the top slot.

if it still wont write try this

Switch off ignition
Remove positive battery terminal
With battery disconnected, depress brake pedal to bleed off and redidual power
Replace battery terminal
Flash your original tune to car on first turn on of ignition

Ie plug in oft turn ignition on go to write , wtite original tune without turning ignition off even if oft asks you to.

After that i think you got big problem, contact the oft guys.

File in my computer, I'll post later. I think is green and lc works fine before. I just try to flashed original stg2 uel 93oct file that I download from openflash website, I didn't edit anything in that stg2 file.

Thank you so much, I'll try it tomorrow. Wish I don't get a big problem.

If you need help just pm me or @steve99

Ok. Thank you so much. I'll pm you if I still get error tomorrow.

Worse comes to worse though and it still doesn't work I'd worry that because the car can't start your battery voltage is rapidly dropping every time you try to crank. That means you may need to go to a dealer and try and get something warranty repaired

Yes that's what I'm worry about. I don't want go to dealer. That's to much work for me. The car can't start, I'll need towing and they are close tomorrow.

In this situation where you have problems best to flash original stock rom stored in OFT called "Original File" this is your original stock rom stored by oft. This may allow oft to flash over corrupted rom.

I have done this with Tactrix but not OFT

I'll try this later. I may buy a tactrix if oft still doesn't work. I tried to flash back to original file many times yesterday but oft still shows error.

That sucks dude, what about the flash over to stage 1 or stage 2?

Always show me error. Every times. Sounds like out of battery when I start the car, just 1 sec with that sound.

Do you still have the 2 or 3 year roadside assistance? You might need to call em up and have em transport to the dealer even though it's Sunday they'll do it.

I don't have it. I only have the Subaru gold warranty. But I think it will cover it.

Worse comes to worse in the diagnosis don't say you did anything related to tuning and such, also you might want to put the OEM headers back on. Depending on the dealer they will definitely invalidate the warranty if that stuff is left on there and they notice the ecu calibration stuff is all messed up. Just say it didn't start in the morning and earlier on it was running quite rough.

Yes, I think I need to put the oem header back on if I still can't flash stock rom into ECU today. Then go to dealer.

make sure battery is charged, oft will not flash if volts too low.

Hope it just low volts. I'm gonna find a charging cable.

happens to me all the time. what i do is unplug oft and then plug it back in to flash.

Thanks, your car can't start also when that error happens to you?

Finally I found out the problem today. Voltage was lowered while OFT flashing the file into the ECU. First time flashing shows completed but actually not. Then I tried to start my car, car won't start because file was incomplete and voltage was too low. The voltage was too low when I tried second and third times to flashing the ECU, so OFT shows error. Today I tried to charging the battery and then car started. I flashed stg2 uel 93oct into the ECU and it worked.

Big thanks to @FRSBRZGT86FAN and @steve99 helped me finding the problem out.

I never tried to start my car but i may have a bad battery as well

With the time and effort you are putting into the community you need to start charging people :). Not kidding, I am serious. We understand that you are passionate but you have saved the A$$ of hundreds of folks here and I am sure they would wish to thank you for it.
I totally suggest setting up a donation account. Again not kidding... If others approve this please like/thank the post :) and if you get ten likes/thanks then you setup an account :)