P0072
Read the instructions below then 
start the fault diagnostic procedure.
Symptom: CHECK ENGINE lamp on.
Loss of performance.
 
  
 
 
  
  
   
   
    
    
     
     
     Mass Air Flow Sensor, Air Temperature Signal, Open/Short
    
    
     Fault symptoms
    
   
   
   
    
   
   
    
   
   
   
    On-Board Diagnostics
   
   
    
     Type of diagnosis:
    
    
    
   
   
   
    
   
   
   
    
     Enable criteria:
    
    
    
   
   
   
    
   
   
   
    
     Fault criteria:
    
    
    
   
   
   
    
     
      
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        Short circuit to B+/ground or open circuit.
         
         
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        The conditions above must be fulfilled for min. 0.6 s.
         
         
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     System reaction to a fault:
    
    
    
   
   
   
    
     
      
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        Limp Home, torque limitation.
         
         
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        In case of error, EGR control is deactivated.
         
         
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    For more information, see also:
    
    
   
   
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     "Read Values" menu
    
    for a description of read values.
    
    
   
   
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     "Activate" menu
    
    for a description of applications.