Rough/No idle after jump start,, 1262 code..

[Jtuner]

Sooo around eh, 4-5 months ago I killed my battery.. Jump started it, no problem, but after the jump, the damn thing wouldn't idle.. I unplugged the ICV and it then idled nice, but a bit high (1200 cold, and around 900-1000 warm) but nice.. I replaced the ICV thinking I may have given a bad voltage/amperage jolt to an old electrical componet, with no avail.. With the new ICV the idle still sucks, so I unplugged it again so I can drive...
I checked the OBD code last week, and got a 1262, which is and idle control circuit open, or DME controller fault...
Just kinda wondering if anyone has experienced this before.. Should I attack the wiring or the ECM? My ECM is chipped with a cheap "Dinan" ebay chip, so I'm half wondering if that piece of crap didn't fry on me.. performance doens't seem to be affected with the ICV unplugged, but I'd really like to get rid of the CEL...
Any input will help,, I'll be in that area replacing PCV hoses, deleting the TB heater, and replacing the intake manifold/TB gaskets, so it'd be a good time to address the situtation... Thanks for the help in advance kiddos

Jordan

[Jtuner]

Code info BTW,,

1262 Idle Speed Actuator

"There is a break or short circuit in the wiring to the idle
actuator or the wire from the DME is defective or the output
stage in the of the DME is damaged. This code will also be
stored if the engine stalls at over 600 rpm."

[Jtuner]

bump bump,, read a couple other threads explaining this exact concern.. no answers really,, and the ones i read, no one had jump started before the problem began.. I might just try the ECM,, we'll have to see... COP kit and clutch are first and foremost lol,, any ideas would rock, thanks guys

[Cobra Jet]

pull the eBay chip out of the DME and try it again...  my bets are the eBay chip is bad...  I've read alot of threads on other BMW forums that warn folks of buying those eBay chips - as some do not work at all and some can mess up the DME.

[Jtuner]

yeah I was probly gonna try that first.. Gotta find my stock chip now lol

[adam12hicks]

So do you have a known good ICV left over then?  My idle is kinda of erratic but it's not bad enough to buy a new ICV from the dealer yet.  If I could find one for a decent price that was known good I'd like to have it for testing.

Thanks!

[Jtuner]

I do have an ICV, but I won't know its good until I get my car running right again LOL But as soon as I do, I'll give you a buzz