powerstroke error code

Have a 2001 7.3 excursion and it periodically throws a P0683 code, my
reference lists this as: "glowplug diagnostic signal communication fault",
anybody encounter this one and what was your fix?
Thanks

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1 22nd August 00:33 bob statkus External User Posts: 1	powerstroke error code Have a 2001 7.3 excursion and it periodically throws a P0683 code, my reference lists this as: "glowplug diagnostic signal communication fault", anybody encounter this one and what was your fix? Thanks