Hi rgeise7502,
sometimes trouble codes are not recorded oin the PCM due to wiring or other errors. The only way to go about is to get the scan done when the CEL is shows and ignition switch is not turned off.
A scsn tool to get the freeze frame data would be the ideal way to understand the various component operations when CEL is turned on.
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Sunday, October 31st, 2010 AT 11:28 AM