Check your owner’s manual or the fuse card inside the glove box fuse panel. Replace any blown mini or J-case fuse affecting the DME/thermostat circuit. Also check the DME main relay (integrated into the front power distribution box).
, framed as a real-world diagnostic scenario to help you understand what it is, why it happens, and how to fix it. The Mystery of the Shaking Steering Wheel bmw 03082f
If the connector is corroded beyond cleaning, buy a pigtail repair connector from BMW (P/N 12521706070 for 2-pin, but verify fit). Check your owner’s manual or the fuse card
Because this code covers "several cylinders," the issue is usually a shared component rather than a single bad spark plug. The most likely culprits are: why it happens