pumpkinmike Posted July 14, 2013 Report Share Posted July 14, 2013 good morning have 04 deville ck eng light on no communication @DLC...all fuses good..can pull codes from drver info center but cant clear pcm 0442 0741 Link to comment Share on other sites More sharing options...
Logan Posted July 14, 2013 Report Share Posted July 14, 2013 P0442 = Evap system leak. P0741 = Torque converter clutch. What are you using to try to pull codes from the DLC? Logan Diagnostic LLC www.airbagcrash.com www.logandieselusa.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...
pumpkinmike Posted July 15, 2013 Author Report Share Posted July 15, 2013 I have tried several brands of OBD scanners..wont even power up scanner....there is power at connector tho...Is there a way to clear codes from driver info center? im hoping its just a history code....no noticeable issues with trans or TC. Link to comment Share on other sites More sharing options...
Logan Posted July 15, 2013 Report Share Posted July 15, 2013 There needs to be both a power and ground at the DLC for a tool to work...something going on there... On the IPC mode....the IPC will display all the systems codes....then will ask..."clear all codes?"....use the (up) ^ button as a yes. The display should then show.."all codes cleared". Then just turn off the car. Logan Diagnostic LLC www.airbagcrash.com www.logandieselusa.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...
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