code 0380 - Chevy and GMC Duramax Diesel Forum
01-04.5 LB7 Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

 
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post #1 of 4 (permalink) Old 11-12-2007, 11:07 AM Thread Starter
 
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code 0380

I have a 2004 duramax with 84k miles on it. I recently had the check engine light come on with a code for "0380 Glow Plug/heater circuit A". I was able to read this using my PPE programmer. I thought the programmer may have something to do with this so I cleared the code put the program back to stock and the check engine light came on again. Does anybody know the cause of this and is this covered under the 100k motor warranty?
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post #2 of 4 (permalink) Old 11-12-2007, 02:20 PM
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I'm not sure if its covered under the 100k warrenty or not but the most common causes for this code are 1 or a few badf glow plugs or a bad glow plug relay. Might wanna check those out first!

Hot rodding duramax trucks since 2004
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post #3 of 4 (permalink) Old 11-12-2007, 02:26 PM Thread Starter
 
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how do I check the glow plugs? If this is the cause is this something I can replace myself?
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post #4 of 4 (permalink) Old 11-12-2007, 02:38 PM
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Yeah, take the wire off the glo plug and use a ohm/continuity meter from the glo plug stud with one lead and to the head "gound" with the other lead and u should have a closed circit for s good plug!

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