Reading Codes
 

Hello Everyone,

I am new to the board and have found some useful information already. I am having a little difficulty in reading code on my 1998 Deville. I'm not sure if I am reading the codes correctly or if I need to go a step further. I have turned the ignition to the on position and pushed the OFF and WARMER buttons at the same time for about 5 seconds. The display then flashes and comes up with PCM History and then a code of P1527, then procedes to go through the other code histories as well (ACM, SMD, IRC, etc.) If there is no code it comes up as no code. Here is what I have found for history codes so far, P1527, B1148, B1147, B1347, U1255, U1255, U1096. Then at the end it has PCM?

Is there something further that I need to do to get specific codes and where can I get the meaning of each code?

Thanks,
Bob

http://redirectingat.com/?id=42X204&url=http%3A//myweb.accessus.net/%7E090/dtcobd1.html%23cus i think this site will help you out.....
welcome to the forum bob.
are you having problems with the car? seeing all codes are in history, id clear and then after a day or so repull.... let the forum know
rickyd

Yes, I did have a message pop up on the display the other day that read AC Refrig low. I bought a can of freon with a gauge and when I put the gauge on the low side of the AC line it was reading high to the red alert zone. That's when I tried to read the codes. How do I clear all the codes? How long will it take for codes to reappear if there is a problem? 1998 Deville.

welcome Bob and hope you enjoy the forum...To delete the history push the up button (belive its the UP Fan speed and Low Fan speed button) Up is yes and Down is No...Just tryiong to go by memory from the other day when i did mine..If i am wrong I belive SlowRoll will def help you out...He has been a awesome help to me so far..

codes will reappear as car runs through cycle (s) and a problem is detected.. it may take a day, or two. maybe an hour, maybe 5 min......
rickyd