P0733
Read the instructions below then 
start the fault diagnostic procedure.
Symptom: 
 
  
 
 
  
  
   
   
    
    
     
     
     Gear 3, Faulty Gear Ratio.
    
    
      
    
    
   
   
  
   Fault symptoms
  
  
   CHECK GEARBOX warning lamp on.
   
   
  
  
   TCM in limp-home mode
   
   
  
  
   
    Conditions
   
   
   
  
  
  
   
    
     
      | • | Transmission in 3rd gear 
 
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      | • | The TCM not in the Limp-home mode 
 
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      | • | The selector lever is in position 3, 4 or D 
 
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      | • | Fluid temperature over 20°C 
 
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      | • | Engine speed over 400 rpm. 
 
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      | • | Brake pedal not depressed. 
 
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    Fault criteria
   
   
   
  
  
   The gear ratio diverges by more than 20% from the expected value when the vehicle is driven in 3rd gear.