I HAVE HEARD YOU CAN OBTAIN DIAGNOSTICS CODE BY TURNING THE KEY ON AND OFF. CAN YOU TELL ME THE PROCEDURE?
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2002 Dodge Ram Van 1500 Question: DIAGNOSTIC CODES
Answer #1mastertech6371 May 17, 2011, 10:09Master
yes, if you cycle the key 3 times and leave the key on, then the light will flash out codes.
it will not define the problem, just the system that has a failure.
a scan tool is the real tool that is required as you need freeze frame data and data to help track down the failure.