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- - DTC Help (https://www.dieseltruckresource.com/forums/3rd-generation-ram-non-drivetrain-all-years-101/dtc-help-82938/)

fredbert

Nov 14, 2005 01:46 PM

DTC Help

I keep getting DTC A4 when I do the instrument cluster test (turn on ignition while pushing trip odometer button). The book defines it as "ignition run/start circuit rationality". The question is what the heck does that mean! :confused:

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