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What is code p1263 or p1293 on 2004 1 ton duramax ?

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63 is an IPR code 93 is and injector code. Both point to the injector control module. If it starts and runs, I wouldn't be looking at the IPR sensor. I would go after the injector/wiring or Injector module. But I use a scanner to Check them out. then resort to a volt/ohm meter.

Posted on Dec 15, 2016


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The codes that you have there means:

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In the next link, you can find Lincoln LS 2000-2005 Connector Pin Identification

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