my mechanic says it might be that since the thermostat may be stuck in open position, the catalytic converter may not be registering hot enough to work effectively. Is this possible??
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2005 Nissan Sentra Question: check engine code reads Catalytic running too cold and engine running too cold.
Answer #1Justin Case Auto from Justin Case Automotive Repair, Inc., August 16, 2013, 04:27Technician
90% it's a stuck open thermostat. Have the mechanic plug in the scanner and see what the coolant temperature is getting up to. Should be above 190 degrees while driving.
ReplyDenster1, August 16, 2013, 09:49Rookie
Thank you! I'll have him check it and let you know! Thanks, again. ~ Dennis