[mr_nitroz]

Hello to all,

I have a client who have 535d F10 chipped and when he drives air-conditioning suddently stop it´s function. On diagnostic is only 1 error in IHKA module:
801222 - Air conditioning compressor: switch off due to missing DDE/DME release
In fault description is written that this fault occurres when the engine temperature is high, over 145°C. But when I open description of this error there is a error frequency log where is speed, rpm, engine temp, km when this error occurred and engine temperature when the error appeared is from 20-102°C, not more.

So I am looking for an easy solution how to code this protection out of IHKA. Unfortunatelly I am not familiar with german shortcut word describing each coding value.
I already tried to code:
VA_IGNORIEREN to aktiv but the error is still appearing.

I am attaching NCD coding file if IHKA from his car. If there is anybody who speaks german and can help me at least to give some help which coding value can match problem above? Or anybody know what value change in coding? Or is it even possible to code it out?
I tried to look into DDE coding too but there isn´t anything about it.

Thanks!

[inspi1981]

801222 - Air conditioning compressor: switch off due to missing DDE/DME release
this is fault show up also when You have just ignition ON. Maybe problem is somewhere else. Cooling fan working?

[mr_nitroz]

Yes all is working, when the AC stops ventilator stops too. After engine off and on AC is back again.

[Breach]

I'm sorry to necro an old thread, but I was having the same problem for years and several people have been fighting with this from my googling with no solution. I think I found a solution (at least in my case). Run ISTA Steering wheel normalisation, and voila - no more IHKA 801222! TIS says to run this after programming/encoding IHKA, and folk using e-Sys normally wouldn't have. No idea what's the connection between steering wheel and IHKA, but there you have it. Give it a try if you have the same event.

[willisodhiambo]

I'm sorry to necro an old thread, but I was having the same problem for years and several people have been fighting with this from my googling with no solution. I think I found a solution (at least in my case). Run ISTA Steering wheel normalisation, and voila - no more IHKA 801222! TIS says to run this after programming/encoding IHKA, and folk using e-Sys normally wouldn't have. No idea what's the connection between steering wheel and IHKA, but there you have it. Give it a try if you have the same event.

One of the reasons ista is best for programming, if only it had individual programming and then post programming measures