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1997 Caddilac Deville D'elegane
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Discussion Starter #1
I have a 1997 Cadillac DeVille D'elegance with 114,000 miles on it. I ran the diagnostics through the computer and I have no current codes but the service engine light is on? Any ideas! :hmm:
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
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20,097 Posts
I have a 1997 Cadillac DeVille D'elegance with 114,000 miles on it. I ran the diagnostics through the computer and I have no current codes but the service engine light is on? Any ideas! :hmm:
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like Ranger said -
if the SES light came on - there are codes -

try again - using this method -
go here and read the ENTIRE post -

http://www.cadillacforums.com/forums/cadillac-deville-1985-2005-including-1985/138257-how-pull-codes-dtcs.html

post the codes here -
ALONG WITH THEIR DEFINITIONS -
 

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1997 Caddilac Deville D'elegane
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3 Posts
Discussion Starter #4
I ran the codes through following the entire post.

Codes:

PCM P1520 History
PCM P1527 History

NO IPC Codes

NO ACM Codes

NO SDM Codes

NO TCS Codes

NO PZM Codes

NO IRC Codes

RFA B2560 History

NO MSM Codes

NO MMM Codes

Since these are not current codes...no reason to post definitions. SES light is still on! What to do!?
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
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20,097 Posts
I ran the codes through following the entire post.

Codes:

PCM P1520 History
PCM P1527 History

NO IPC Codes

NO ACM Codes

NO SDM Codes

NO TCS Codes

NO PZM Codes

NO IRC Codes

RFA B2560 History

NO MSM Codes

NO MMM Codes

Since these are not current codes...no reason to post definitions. SES light is still on! What to do!?
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so - clear the codes and see what happens
 

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Super Moderator
2010 DTS
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87,413 Posts
Codes go to history and extinguish the SES light after 3 successful ignition cycles with no fault detected. Since your light was still on we can determine that the fault was recent (within the last 3 ignition cycles). Chances are, those codes may return.
 
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