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Old 06-24-2011, 05:11 PM
kenaustin9 kenaustin9 is offline
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Vehicle: 2001 ram 2500 quad cummins
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Engine: 2002-2008 226ci (3.7L) Magnum/PowerTech V6 215hp 235lb/ft
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Default APPS and codes

"Any by the way, there isn't a 1602 DTC stored in the 24 valve Cummins. There is however, a 1693, and what that means is when you get a 1693 it's usually a companion code stored in the PCM. So, you will have 1693 along with another code, but 1602 is not a 24V code. APPS codes as state before are 0121, 0122, and 0123. If you get either one, time for new APPS."

I rechecked, and I must have read the code without my glasses or something. the codes are:
P1682 and P1693. Do you know what the P1682 indicates?

The code references are causing me to scratch my head a bit. I haven't been able to find code lists on the forum, or much about retrieving them, where they are stored, or companion codes stored in the PCM, etc. Is there a reference around that explains all that stuff?

Regarding the companion code, does it mean I need to get a code reader to find what is in the PCM?

Thanks for your patience. I suspect that the APPS is the issue from reading other threads about these symptoms, but it would be nice to know what the codes show before I order a new one. I'll check out "Timbo APPS". Thanks for the response.

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