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• P2090

  P2090

  
  

  Diagnosis information - DME V6 DFI Exhaust camshaft adjustment driver NOTE:

  If the fault P2090 is detected, the camshaft goes to its maximum adjusting angle.
  If the fault P2091 is detected, the camshaft remains at its initial position or returns to this (no adjustment).
  
  

  Diagnostic conditions

• Battery positive voltage 9 ... 16 V
• Time after engine starts > 10 seconds
  
  

  Possible fault causes

• Open circuit in activation line
• Short circuit to ground in control line
• Short circuit to B+ in activation line
• Open circuit in voltage supply
• Fuse F12 faulty (fuse carrier in plenum panel E-box)
• K7 connection point disconnected
• Intake camshaft adjuster faulty
• Solenoid hydraulic valve faulty
  
  

  Affected contacts on the DFI control unit connector

  
  
  Connector [A]
• Contact 21
  
  

  Affected contacts on the intake camshaft adjuster connector

• Contact 1
• Contact 2
  
  

  NOTE: The line for fuse F12 and contact 1 of the intake camshaft adjuster connector is routed via contact 4 of the KE 7 connection point.