N54 fault codes
The codes BeeEmUu most often sees on the N54 family, with full write-ups where the community has recorded repair paths.
29E0Mixture too leanFuel & air metering29E1Fuel pressure sensor signalFuel & air metering29E2Fuel injection rail, pressure sensor signalFuel & air metering2A82VANOS intake control faultOther2A99VANOS exhaust: control fault, camshaft stuck (community list)VANOS / camshaft30FFTurbocharger, charge-air pressure too low (underboost)Turbo & charge air
Watch live data too
Codes are half the picture. The live-data profile for this engine — rail pressure, charge-air temperature, VANOS and fuel trims — is on the N54 engine page.