2002 Cadillac Deville

Asked by Apr 06, 2011 at 10:17 AM about the 2002 Cadillac DeVille Base

Question type: Maintenance & Repair

my service engine soon light came on. I hooked it up and the code was p0308, # 8 spark plug was fouling. My mpg in town and highway were 10 & 16. I replaced the plugs and my mpg went to 17 & 21. I took the battery cables off & my service engine light still will not go off. How do you get the light to stay off. My car seems to run fine now.

1 Answer

75

Turn on ignition, engine NOT running. Hold down the "info up" arrow and the "on-off" button until all dash lights come on bright. All will go blank for a few seconds and then text will appear in the DIC (Driver Information Center). Use "info up button to select all codes and then press "on-off" button to start code retrieve from 20 systems. Write down all codes, most will be "history". When the list ends it will ask "All codes clear" press on-off button to accept. Here is the list of the 20 reports: ABS, AMP, DDM, DDS, DIM, IPC, IPM, IRC, LRD, MSM, PCM, PDM, RCC, RFA, RIM, RRD, RSS, SDM, TTM, VTD.

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