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Home >> BMW >> 2012 >> 760Li >> Repair and Diagnosis >> Engine Performance >> System >> Self Diagnosis - N74 - Diagnostic Trouble Codes - DTC P1638 (BMW DTC 100001) Through DTC P140E (BMW DTC 110008) >> DTC P1148; BMW DTC 104101: Differential-pressure sensor, intake manifold, plausibility: actual value too high >> Action in service

Action in service

  1. Visual inspection of vacuum sensor plug contacts
  2. Check wiring between vacuum sensor and DME
  3. Check induction system/crankcase for leaks (crankcase vacuum control can allow excess air from the crankcase to flow into the intake manifold, for instance, if vacuum line from brake booster to vacuum pump is leaking)
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