Stalls out when driving, code P1685

2008 DODGE RAM
122,000 MILES • 5.7L • V8 • TURBO • 4WD • AUTOMATIC
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GATELAE1
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Stalls out then it restart , but then stalls again shortly after. Throws a code P1685. If you disconnect the negative terminal it will reset code and car will be okay for a week or so . Then it will start stalling again. Tried using both key fobs, that’s not the problem. Is the problem the immobilizer?
Feb 24, 2019 at 6:07 AM
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GATELAE1
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Made mistake it doesn’t have a turbo.
Feb 24, 2019 at 6:24 AM
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ASEMASTER6371
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Good morning,

Can you verify the code? I see nothing for a P1685 for a 2000 ram with a 5.7.

No to the immobilizer. If it was bad, it would not allow it to start. Once it starts, it will or should stay running.

Roy
Feb 24, 2019 at 7:13 AM
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GATELAE1
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You got the year wrong it’s a 2008.
Feb 24, 2019 at 7:36 AM
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ASEMASTER6371
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Sorry, senior moment.

Looked at 2008 for the same and nothing for P1685.

Can you verify the number? I tried it In P, C, B and U and nothing shows for 1685.

Roy
Feb 24, 2019 at 7:52 AM
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GATELAE1
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Roy, I thought that’s was the code number, I had a senior moment also. It said” SKIM Key Invalid”. Or should i wait until it codes again when it stalls out , and then get back to you?

Thanks, Larry
Feb 24, 2019 at 8:18 AM
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ASEMASTER6371
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Yes, when the light comes on again, grab the code and repost it for me.

Roy
Feb 24, 2019 at 8:50 AM