sisinky Posted August 24, 2013 Report Share Posted August 24, 2013 Just checked codes: E39 E52 F10 In layman's terms what do these mean? Link to comment Share on other sites More sharing options...
Bruce Nunnally Posted August 24, 2013 Report Share Posted August 24, 2013 E39 viscous converter clutch malfunction (issue with the torque converter in the transmission, or wiring bundle leading to) E52 Electronic Control Module Memory Reset -- this one pops up if the battery has been disconnected F10 Outside Air Temperature Sensor Circuit -- exterior temperature sensor Bruce 2023 Cadillac CT4-V Blackwing Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
sisinky Posted August 24, 2013 Author Report Share Posted August 24, 2013 Thanks, not sure why the transmission code is turning up?? No transmission issues, no slippage, no whinning or delays in changing gears, transmission fluid is fine. On the column when put in gear, the 'red line gear indicator' is off to the right a bit, not the first older car I've driven to do this, would this cause the code? Did just put in a new battery this week. And outside temp tells me it is -40F LOL Link to comment Share on other sites More sharing options...
Texas Jim Posted August 24, 2013 Report Share Posted August 24, 2013 Check the outside temp sensor... see if it is unplugged... Link to comment Share on other sites More sharing options...
Logan Posted August 24, 2013 Report Share Posted August 24, 2013 -40F is the default cold temperature for a open or unplugged sensor. This is also true with the coolant sensor. You'll never see colder than -40 in the vehicles computers. Logan Diagnostic LLC www.airbagcrash.com www.ledfix.com www.ledfix.com/yukontaillightrepair.html www.ledfix.com/ledreplacements.html www.ledfix.com/j42385toolrental.html Link to comment Share on other sites More sharing options...
Cadillac Jim Posted August 25, 2013 Report Share Posted August 25, 2013 I think that the E39 is the OBD I E039, which is the dreaded TCC clutch not engaging DTC. -- Click Here for CaddyInfo page on "How To" Read Your OBD Codes-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data -- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC Yes, I was Jims_97_ETC before I changed cars. Link to comment Share on other sites More sharing options...
sisinky Posted August 25, 2013 Author Report Share Posted August 25, 2013 Thx for all replies. Next question: After reading many threads from others with this same E39 code issue and my car not exhibiting any issues, is it fairly safe to assume that changing the transmission fluid and adding Lucas transmission additive fluid would be sufficient? I gather, since the transmission appears to be operating fine the only real issue is a slight loss of mpg? Link to comment Share on other sites More sharing options...
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