If the question was about 'codes of professional conduct of economists' 
   instead of 'ethics of economics' perhaps we might have an easier option to 
   look for answers. 
 
   Doctors, engineers and lawyers all must adhere to certain professional codes 
   of  conduct,  and  there  are professional bodies to apply discipline. 
   Accounting  seems  to  be  the  closest  subject to economics that has 
   professional codes of conduct. 
 
Mohammad Gani