Now that my R53 is running fairly reliably, I've started trying to work off the codes that keep popping. I've reset them multiple times, but they always come back. No associated lights. I have an Autophix code reader that keeps pulling these codes under the IHKA/ IHKR/ AC/ Heater group:

01 solar sensor
02 Inside temp sensor
03 heat exchanger sensor
04 position- air distribution flap
05 position- temp mixing flap
08 fan inside temp sensor
09 motor- air distribution flap
011 motor- temp mixing flap

The weird thing is that all of the climate controls seem to work fine on all the settings. I'm pretty sure it's something common between them (like a climate control module or something), but I'm not sure what that would be.


Having the same issue under ZKE Central Body Electric Group:

80 power window driver
8c relay windscreen wiper
91 rear window wiper
93 heated rear window short circuit
94 windscreen wipers/ reset contact
AA turn signal flasher, LH, open circuit, or short circuit to ground
B5 blower motor short circuit to positive
00 DWA driver door open during arming
01 DWA passenger door open during arming
02 DWA engine bonnet open during arming
03 DWA rear lid open during arming

Same deal. All of these things seem to be working fine. Do you have any ideas on if there is a module that controls all of these functions or some other common that could be causing these codes to keep popping?

 

May sound silly but have you tried disconnecting the battery for 30min? I'm not sure. However, after having my transmission replaced I performed a routine scan which brought up a slew of crazy faults. Including several of the faults on your list. Yet everything seemed to function perfectly. I cleared the faults, disconnected the battery for about 30min, then scanned again (with my Foxwell 510 elite). No faults detected. Scanned again after 100mi - all clear = no faults.
Yeah - I have to agree...it sounds really silly but for whatever reason worked in my case.

It may be a problem with your BCM(?)
sorry - I'm probably not much help.
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Check grounds, moisture intrusion. Maybe the BCM - Body Control Module.

 

Thats what I was leaning towards is a BCM. Everything works, which makes me think it's not likely a ground. Ill probably send it to ECUPros for testing

 

I did try that. It sat with the battery out for weeks while I rebuilt the entire front end. I appreciate the suggestion. i kinda knew this car would be a challenge when I bought it. The PO was running it into the ground and planned to drive it until it blew and then scrapped it. I couldn't let that happen, so here I am.

 

as with all things electrical would start here - have the battery tested at a parts store or Wally World. These cars hate hate hate sketchy batteries and low voltage. Battery should be 12.6V minimum static and 14-ish V running and charging. Battery terminals, cables, grounds after that. Especially the ground strap that goes on the engine mount bracket, make sure it's clean and snug.

That straightened out would next suspect BCM. Look for evidence of water intrusion from sunroof drain boots along the passenger (U.S., driver U.K.) A pillar, a frequent source of BCM issues especially if the car's been sitting out in the weather.

well it is a BMW product...

 

Those are all solid suggestions. I’ll check out that grounding strap tomorrow. Once I get all the wires repaired, I might send that BCM module out for testing just because.

 

Kombi. Run diag tree in ista+ to get the factory line procedure to fix.

 

Ground strap, Fuses, relays, then BCM. Look at the BCM connections, might have corrosion from water leak.