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Victory!!! finally i found a way to bypass immobilizer with OBD2

272K views 50 replies 28 participants last post by  scethaniel.esok0  
#1 · (Edited by Moderator)
Man, I'm so happy right now. I have been troubled with Honda's pos immobilizer system and posting here trying to find a solution to run my car with OBD2 ECU for as cheap as possible. Finally, tonight I got some clear answers I would like to share with you guys. This is for all hondas from 1997-2001

The immobilizer is a chip on the ECU main board. It's soldered on there. You can break it off and start your car with a check engine light (this doesn't work on Preludes, apparently). To get rid of the CEL, you can order this chip called the mobilizer board made by a place called Doctronics. It will cost over 50 dollars to get your hands on it in the US. You order this little chip and replace your existing immobilizer, and bam, you are finished. Haha, soo freaking happy.

ECU "Mobilizer"
 
#3 ·
Lol i dont think i thieve is gunna take the time to open your ecu and break a chip off, atleast if i was a thieve i wouldnt lmao.

but on the other hand this is awesome to know incase u are someone like me and buy the car and dont recieve the red key.
 
#5 ·
I did not get the red key when I bought my SH. I just got some 'T5' keys cut to my VIN# at the Honda dealer and they worked first try nothing else had to be done.
 
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#9 ·
pretty interesting, and would be useful if I lost my keys, but I gave my pops an extra copy just for this reason
 
#10 ·
man i'm so happy right now. i been troubled with honda's pos immobilizer system and posting on here trying to find a solution to run my car with OBD2 ecu for as cheap as possible. finally tonight i get some clear answers i would like to share with you guys.
this is for all hondas from 1997-2001

apparently the immobilizer is a chip on the ecu main board its soldered on there, you can break it off and start your car with a check engine light (this doesn't work on preludes apperently). to get rid of the CEL you can order this chip its called mobilizer board made by a place called doctronics. will cost a bit over 50 dollars to get your hands on it in the US. you order this little chip and replace your existing immobilizer and bam u are finished. haha soo freaking happy.

http://www.6thgenaccord.com/forums/showthread.php?t=27958
http://www.j32a.com/showthread.php?t=429
http://www.doctronic.at/scripts/orderform.dll/eng
I don't get it.. you say you're happy to have found the solution which is taking the chip out of the ecu, but it apparently doesn't work on preludes..
YAY!
:???:
 
#12 ·
sorry its confusing, ripping off the prelude immobilizer will not start the car. i learned this from (http://ff-squad.com/ecu2/?page_id=76) look at option 1 which is ripping the chip only only works for tegs and not for our prelude and will have a CEL. option 2 fixes both ludes and tegs with no CEL. i'm still asking around on the accord forums to see what ecu they are using for their h22 obd2 swaps that has used this method, i'll keep u guys updated.
 
#13 ·
dude ur a retard for posting this. someone already tried to steal my car, fortunately the idiot thought it was like civic and tried to start it with a screw driver. the immbolizer is the only thing that saved me but thanks again for helping them out, maybe next time it'll be ur car.
 
#14 ·
You do know that it is common knowledge and posted all over this site how a simply obd2/obd1 harness and a chipped p28 ecu will bypass the factory ecu immobilizer. There still is the starter kill to bypass but that's child's play.

Face it, if someone wants your car bad enough they will get it. A tow truck is far simpler to jack and then they simply pull away your car. This is what good insurance is for.
 
#15 ·
? if you had a car worth stealing wouldn't you want to spend a little more on a good aftermarket alarm?
 
#17 · (Edited)
ANYTHING u do can be "solved" by someone with enough knowledge. my point is why help? ur alarms can be disabled, kill switches jumped, whatever but why give this information away making more people with the knowledge, that might not have had it before and raising the percentage of thieves that can still ur car? luckly the person that broke into my car didnt come across a website with info like this on it or i might not have my car right now. but by all means..........just dont come back complaining if it happens to u.
 
#19 · (Edited)
^its "retard" but maybe ur right.

nice edit RETARD.

you know i was going to agree with you, but now u can :thefinger_red: yourself.
 
#23 ·
no guys, its not as easy as you think. you have to solder the immobilizer-bypass chip onto the ecu once you have carefully taken off the original.. they have something like 8 teeth on each side soldered onto the board that you have to carefully take off so that you can solder the bypass chip on properly.. almost impossible to do without crazy light, a soldering kit, tools to open the car then extract the ecu.
Wondering how i know? i had to do this. lost every key and honda wanted 2000+ for all new locks etc, said it was the only option. fuck that shit. 50$ and shipping fees for a little chip and i can cut all the keys i want for the car.
 
#24 ·
no guys, its not as easy as you think. you have to solder the immobilizer-bypass chip onto the ecu once you have carefully taken off the original.. they have something like 8 teeth on each side soldered onto the board that you have to carefully take off so that you can solder the bypass chip on properly.. almost impossible to do without crazy light, a soldering kit, tools to open the car then extract the ecu.
Wondering how i know? i had to do this. lost every key and honda wanted 2000+ for all new locks etc, said it was the only option. fuck that shit. 50$ and shipping fees for a little chip and i can cut all the keys i want for the car.
its 10 pins and its fairly easy i have pictures n stuff on the other site, i'd posted it but its apparently sensitive info over here.
 
#27 ·
the problem with Doctronic's Mobilizer A0 board is the OBD2 connector does not work anymore and if your in a area that does inspection it will fail because of OBD...

man i'm so happy right now. i been troubled with honda's pos immobilizer system and posting on here trying to find a solution to run my car with OBD2 ecu for as cheap as possible. finally tonight i get some clear answers i would like to share with you guys.
this is for all hondas from 1997-2001

apparently the immobilizer is a chip on the ecu main board its soldered on there, you can break it off and start your car with a check engine light (this doesn't work on preludes apperently). to get rid of the CEL you can order this chip its called mobilizer board made by a place called doctronics. will cost a bit over 50 dollars to get your hands on it in the US. you order this little chip and replace your existing immobilizer and bam u are finished. haha soo freaking happy.

http://www.6thgenaccord.com/forums/showthread.php?t=27958
http://www.j32a.com/showthread.php?t=429
http://www.doctronic.at/scripts/orderform.dll/eng
 
#31 ·
i mean you said you guys done the process of the mobilizer chip, u get no CEL but you also can't check CEL. i just want to confirm this since wasn't brought up in the accord forums. also the guy that does immobilizer removal at (http://ff-squad.com/ecu2/?page_id=76) specifically mentioned that this will pass emissions that use a OBD2 scanner. i understand that if you use a obd1 jumper cable and obd1 ecu obd2 scanner will come up with nothing. jus confusing when everyone's answer is different.
 
#32 ·
wait, im confused...

"apparently the immobilizer is a chip on the ecu main board its soldered on there, you can break it off and start your car with a check engine light (this doesn't work on preludes apperently)"


so this doesnt help with stealing preludes then, so why does it matter???
or am i reading this wrong, cuz based on that sentence, taking off the chip DOES NOT work on preludes, right???
 
#35 ·
wait, im confused...

so this doesnt help with stealing preludes then, so why does it matter???
or am i reading this wrong, cuz based on that sentence, taking off the chip DOES NOT work on preludes, right???
breaking off the chip works on other hondas and doesn't work on preludes. on intetras breaking off lets u drive the car with CEL preludes breaking it off doesn't do shit for u.

"
Hi Charlie,

When it comes specifically to the 97-01 prelude ecu’s immobilizer, removing the chip only, will render the ecu useless, in comparison to a say a 00-01 integra ecu. 00-01 integra ecu’s can still run if the IMMO chip is pulled off. Prelude ecu’s do not, as they have a 2nd line of defense even if the IMMO chip is removed.

……Queue in my aftermarket IMMO chip!

I have an aftermarket IMMO chip that will replace your OEM IMMO chip and will allow the vehicle to start, run, and is OBD2 scanner tool friendly. You won’t be able to pass emissions if you convert to OBD1.

katman"
email i got prolly will send m ecu there and see whats up. 80 dollars.
 
#33 ·
you cant just break off the immobilizer chip off the ECU and start the car; you have to solder in the immobilizer bypass chip ($60 or whatever) once you break off the original piece. The only downside is you can get CEL's in the future, but you cannot read them. I repeat, CEL's WILL show up on your dash, but when you insert a OBD2 reader it says ERROR. Make sense?
 
#34 ·
you cant just break off the immobilizer chip off the ECU and start the car; you have to solder in the immobilizer bypass chip ($60 or whatever) once you break off the original piece. The only downside is you can get CEL's in the future, but you cannot read them. I repeat, CEL's WILL show up on your dash, but when you insert a OBD2 reader it says ERROR. Make sense?
exactly as I have one on the Doc's Mobilizer A0 boards here didn't know about the data connector problem when I bought it (only on USDM ecu's) so I went about actually hacking the immobilizer unit to retain the system .. not too hard to do just have to get a EEPROM porgramer and do some HEX editing.
 
#36 ·
i cant believe i have to modify my central processing unit to make the car fucking start.

thanks for installing that piece of shit in the first place, honda. god damn, sometimes you piss me off. like when i'm sitting in my boiling-hot car, in the sun for 2 hours trying to jumper wires on my immobilizer.

fuck.
 
#38 ·
man i'm so happy right now. i been troubled with honda's pos immobilizer system and posting on here trying to find a solution to run my car with OBD2 ecu for as cheap as possible. finally tonight i get some clear answers i would like to share with you guys.
this is for all hondas from 1997-2001

apparently the immobilizer is a chip on the ecu main board its soldered on there, you can break it off and start your car with a check engine light (this doesn't work on preludes apperently). to get rid of the CEL you can order this chip its called mobilizer board made by a place called doctronics. will cost a bit over 50 dollars to get your hands on it in the US. you order this little chip and replace your existing immobilizer and bam u are finished. haha soo freaking happy.

http://www.6thgenaccord.com/forums/showthread.php?t=27958
http://www.j32a.com/showthread.php?t=429
http://www.doctronic.at/scripts/orderform.dll/eng



Do you think you can e mail me: barisheren@hotmail.com I tried sending you a pm but I guess I was nt qualified. Im having similar problems with my 97 prelude type SH , the engine wont always crank and the Green light key shows up when I use certain keys. Ive tried getting the keys programmed and already spent a great deal of money. They want 900 dollars to swap the immobilizer at the stealer ship. Any advice would be Greatly appreciated. thanks!