I did an on-line topic search and found a test procedure posted by CHawk_man several years ago. Very helpful, thankyou!!
code 1 and 41, time for a new HO2 sensor which have increased $$ since that discussion
From Sea Hawks territory
http://www.marineengine.com/boat-forum/showthread.php?436998-225-intermittent-check-engine-light
code 1 and 41, time for a new HO2 sensor which have increased $$ since that discussion
From Sea Hawks territory
http://www.marineengine.com/boat-forum/showthread.php?436998-225-intermittent-check-engine-light
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