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Smog Check & Emissions Questions and Answers

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Failed Smog Test
  Question Answered
  OBD Trouble Code P0741 Torque Converter Clutch Circuit Problem
by al    
Yes (1)
  Acura CL Drive Cycle
by Matthew    
Yes (1)
  1991 Chevy Silverado Failed Smog Check Due to High NOx
by Scott    
Yes (1)
  Secondary Air System Monitor Not Ready
by Bridget    
Yes (1)
  1995 Honda Accord Disconnected Battery Drive Cycle
by Jon    
Yes (1)
  Options for Failing STAR Smog Inspection a 2nd Time?
by paige    
Yes (1)
  Mercedes S430 Aftermarket Air Intake Duct Caused Smog Failure
by christian    
Yes (1)
  2001 Chevy Silverado OBD II Not Ready After 7 Months
by chap    
Yes (1)
  Ford Crown Victoria Failed Smog Check For High HC
by James    
Yes (1)
  Why Did My Corvette Fail the Smog Test for High NOx?
by April    
Yes (1)





 

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