P1621 code? - Chevy and GMC Duramax Diesel Forum
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post #1 of 6 (permalink) Old 06-29-2009, 03:07 PM Thread Starter
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P1621 code?

I keep throwing a P1621 code...Control module long term memory loss. Any of you guys know what this is. I've never ran my DTC's and not thrown this code.

Sean
2003 Lb7 2wd
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post #2 of 6 (permalink) Old 06-29-2009, 03:09 PM
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This is a typical Bully Dog DTC, nothing to worry about. Basically it means you left your key in the ignition for to long.

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post #3 of 6 (permalink) Old 06-29-2009, 03:12 PM Thread Starter
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But i never leave my key in the ignition???

Sean
2003 Lb7 2wd
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Efi Live by Rob Coddens
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post #4 of 6 (permalink) Old 06-29-2009, 03:57 PM
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mine throws that code too nothin to worry about

05 Duramax LLY
Bullydog Tripledog(Crazy Larry)
w/ outlook monitor
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post #5 of 6 (permalink) Old 06-29-2009, 04:15 PM
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Like I said, it sets when you load the bully dog, and it pops up. This code means absolutely nothing, and will go away as soon as you remove the Bully Dog from your truck.

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post #6 of 6 (permalink) Old 07-21-2010, 07:46 PM
 
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Can anyone help me with the P1621 code for a 2000 chevy turbo diesel?
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