2F08 est un défaut stocké dans la mémoire de votre BMW (code ISTA, pas un code OBD-II P standard).
Ce que ça signifie: DME — intake air temperature (IAT) sensor signal implausible. On most engines the IAT is built into the mass-air-flow (MAF) sensor. Usually a dirty/faulty MAF, a loose connector or an intake/vacuum leak — can cause rough or jittery idle. Not dangerous to drive; check/clean the MAF sensor and its plug, and inspect the intake for leaks.
