tmpafford Posted July 29, 2004 Report Share Posted July 29, 2004 I had a water pump go out on me the other day. The engine began to over heat and the "Engine Protection" mode kicked in. It (the computer) turned off the air conditioner and turned on the heater. I quickly pulled over and let the car cool down. When it had cooled down enought for me to open the coolant bottle, I filled it up with water and drove it down the street to my mechanic. He replaced the pump and everything was fine. The next morning, I started the car and the "Service Engine Light" stayed on. I have checked all the fluids and everything is good. What would be triggering the light? Are the two related? If they are, why did the light not come on right after the engine has recovered from the "Engine Protection" mode? I am looking for things to check before I take it to the dealer to have it checked. My mechanic does not have diagnostic tools for Cadillacs. He mostly just works on restoring Corvetts, but he was the closest guy and water was pouring out of the pump. Link to comment Share on other sites More sharing options...
KHE Posted July 29, 2004 Report Share Posted July 29, 2004 Simultaneously press and hold the OFF and PASSENGER WARMER buttons on the climate control panel and write down the codes that appear on the information center. Post the displayed codes and someone will be able to point you in the right direction. Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
tmpafford Posted July 29, 2004 Author Report Share Posted July 29, 2004 I looked at them yesterday and every one was listed as "history." None said "Current". I will try to look them up again in a little while. Link to comment Share on other sites More sharing options...
tmpafford Posted July 29, 2004 Author Report Share Posted July 29, 2004 OK here are the codes: PCM P0108 PCM P0113 No IPC ACM B1350 No SDM No TCC No RSS PZM B2550 No IRC No RFA No CCP MSM B2119 MSM B2120 No MMM All the codes are listed as "History" None are listed as "Current" Any help? Link to comment Share on other sites More sharing options...
98Concours Posted July 29, 2004 Report Share Posted July 29, 2004 If the light is on, then there is at least one current code. Jeff Jeff 98 Concours 90 Seville 04 Corvette Link to comment Share on other sites More sharing options...
tmpafford Posted July 29, 2004 Author Report Share Posted July 29, 2004 PCM P0113 is Current My mistake. Tried to look them up at caddyinfo.com, but the site did not come up. Link to comment Share on other sites More sharing options...
KHE Posted July 29, 2004 Report Share Posted July 29, 2004 PO113 is the intake air temp sensor high reading code. Check to make sure the intake air temperature sensor is plugged in. It is possible that the mechanic that replaced your water pump forgot to plug the IAT back in. The IAT is near the air cleaner. Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
tmpafford Posted July 29, 2004 Author Report Share Posted July 29, 2004 That was it!!! The others were from the MAP sensor and high coolant temperature. My mechanic probably disconnected the MAP sensor along with the Intake Air sensor. Two others were from a faulty lumbar sensor. Should I try to clear the codes? How do I do this? Will the "Service Engine Light" turn off by its self? Thank you for your help! Link to comment Share on other sites More sharing options...
KHE Posted July 29, 2004 Report Share Posted July 29, 2004 You can clear the codes by entering diagnostics and when the PCM? prompt is displayed, using the fan speed control to input yes/no (high fan=yes, low fan =no). Answer YES to PCM?; you will see PCM Codes; answer YES; diagnostics will display the codes and then prompt PCM CLEAR CODES? Answer yes and the system will clear the codes. Press AUTO to exit diagnostics. Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
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