# Codes PO676 and PO683

**URL:** <https://community.cartalk.com/t/codes-po676-and-po683/55073>\
**Category:** Maintenance/Repairs\
**Tags:** f350, diesel, engines, ford, lights\
**Created:** [September 13, 2010, 5:43pm UTC](https://community.cartalk.com/t/codes-po676-and-po683/55073 "2010-09-13T17:43:26Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![davidxray](https://avatars.discourse-cdn.com/v4/letter/d/d07c76/32.png) [@davidxray](https://community.cartalk.com/u/davidxray)\
**Post date:** [September 13, 2010, 5:43pm UTC](https://community.cartalk.com/t/codes-po676-and-po683/55073/1 "2010-09-13T17:43:26Z")

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My engine service light is on. I changed my #6 glow plug and relay. I reset the computer and the light came back on. How can I fix this problem. 01 f350 7.3 diesel