BMW recommend replacing the ECU so they did, luckily under a 3rd party mechanical warranty (cost 2.5k NZD). Unfortunately, this didn't fix the fault.
Im now going to replace the High Pressure Fuel Pressure Sensor.
Also, i run 91 octane, i am cosidering changing to 95 or 98 octane.
Fault Code: 0036C9
Fault Explanation: DME, internal fault, safety function: plausibility
relative fuel mass
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