RyanS Posted April 21 Report Share Posted April 21 2016 MB sport. Flashing mil light. Codes for CO2 sensor pre and post cat and code for water relay sensor. The mechanic wants to replace all CO2 sensors and the water relay (on back order). Is this necessary or could one bad sensor have tripped all these others? Quote Link to comment Share on other sites More sharing options...
RyanS Posted April 22 Author Report Share Posted April 22 I called the indmar manufacturer and they cleared a few things up. Only replace the two O2 sensors that faulted and do NOT replace the water relay sensor. The water sensor is a common problem and the fix is a software update that deletes the calibration file. Only a dealer of Indmar can do this from what I found. So my mechanic is not a dealer so they will just replace the two O2 sensors and deletes the fail for the water relay sensor. Next time it trips I’ll have to take it to a dealer to do the update. Quote Link to comment Share on other sites More sharing options...
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