OBD2 port keeps blowing fuse - Ford Powerstroke Diesel Forum
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Old 04-03-2013, 03:21 PM
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OBD2 port keeps blowing fuse

hey guys my obd2 port and cigarette lighter keeps on blowing the fuse even when nothing is plugged in. so there must be a short in that harness. Are these two on a separate harness then the main dash harness? how hard would it be to change out?
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Old 04-03-2013, 07:55 PM
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There is a connector (C204, 4-pin) that will disconnect the cigar lighter from the circuit (if that helps). Then it is the Light Blue/White wire from both the DLC and C204 back to the fuse box. Cheers!
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Old 04-03-2013, 08:13 PM
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Thanks for the help Patrick! hopefully its the cigarette lighter shorting out.
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Old 04-03-2013, 11:26 PM
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Pennies and dimes have a way of finding their way in there if you keep change in the ashtray.
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Old 04-08-2013, 07:31 AM
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turns out that the positive and negative wire from the cigarette lighter must be shorting out somewhere. I unplugged the positive and negative from the cigarette lighter and my fuse doesn't arc when I put it in and out and it doesn't blow any more.
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Old 04-08-2013, 11:35 AM
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If it's not blowing the fuse with the wires unplugged from the socket, then the wires aren't shorting. The socket is shorting. If it were the wires, you'd still be blowing the fuse.
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Old 04-08-2013, 02:57 PM
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It will blow the fuse even with the negative line hooked up. Would it still be in the socket ?
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Old 04-08-2013, 04:54 PM
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If the socket is still grounded, yes. Cheers!
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Old 04-08-2013, 04:56 PM
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Sweet. Cheap and easy fix. Thanks for the help guys
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