nismo Posted January 2, 2010 Report Share Posted January 2, 2010 Hi,I have an 01 deville that's having some idling issues.When scanned all of these codes come up: P0203 - Injector 3 Control Circuit P0351 - Ignition Coil 1 Control Circuit P0443 - EVAP Purge Solenoid Valve 1 Control Circuit P0601 - Control Module Read Only Memory (ROM) P1639 - 5 Volt Reference 2 Circuit P1860 - TCC PWM Solenoid Circuit Electrical P0440 - Evaporative Emission (EVAP) System P0443 - EVAP Purge Solenoid Valve 1 Control Circuit anyone have any ideas? I think I need a new computer but didn't want to do that without checking with everyone 1st! Any opinions would be greatly appreciated!! Thankyou very much in advance!! Link to comment Share on other sites More sharing options...
Ranger Posted January 3, 2010 Report Share Posted January 3, 2010 Are they current or history codes? Link to comment Share on other sites More sharing options...
nismo Posted January 3, 2010 Author Report Share Posted January 3, 2010 current Link to comment Share on other sites More sharing options...
Bruce Nunnally Posted January 3, 2010 Report Share Posted January 3, 2010 Also see rough idle checklist here: http://caddyinfo.com/wordpress/?page_id=1595 Also there was an issue with the early 01 Deville for which they actually replaced the cams http://www.caddyinfo.com/howtoroughidle.htm Bruce 2023 Cadillac CT4-V Blackwing Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
BodybyFisher Posted January 3, 2010 Report Share Posted January 3, 2010 Whenever a lot of codes show up, the first thing to do is to LOAD TEST the battery and check the battery connection. These cars are very sensitive to good battery current and connections Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.