Air conditioning light flashing - error code 8011B9

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Air conditioning light flashing - error code 8011B9

Post by julieb » Sun Oct 14, 2018 5:57 am

My F20 118i has some issues with the climate control that I'd like to get fixed before summer!

The symptoms are:
- switch air-con on, light flashes for a while
- light goes off
- after a while, the light starts flashing again and then remains solid

After this, it seems to work fine.

Other observations are:
- if you turn it on while idling, it will start a lot quicker
- if you're at highway speed, it will sometimes not come on at all

I've had the error codes read and the only one that appears related is:

8011B9 Potentiometer for stratification control: Short circuit to B+ or line disconnection

Has anyone had a similar issue or able to decipher what the error code actually means?!


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