Hi,
On a Mini, the P1909 is a transmission temperature code. The code, more specifically, is tied into the CAN system. CAN stands for controller area network. Basically, all the different modules/computers are tied together via a few wires. However, it is not related to this model year vehicle. Are you sure the code is correct? Are you having transmission issues?
Let me know.
Joe
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Monday, October 18th, 2021 AT 6:34 PM