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Attention: TDR Forum Junkies
To the point: Click this link and check out the Front Page News story(ies) where we are tracking the introduction of the 2025 Ram HD trucks.

Thanks, TDR Staff
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    Won't pass smog here in CA. P2509 ECM/PCM Power Input Signal Inter

    I switched batteries today, cleared code, and cleaned stud to PDC. ill drive it for a week or two and check to see if that code come back. Thanks.
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    Won't pass smog here in CA. P2509 ECM/PCM Power Input Signal Inter

    hahahahah! Idiots here would probably believe it!
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    Won't pass smog here in CA. P2509 ECM/PCM Power Input Signal Inter

    Good idea, ill just be chasing the one old battery to the next.
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    Won't pass smog here in CA. P2509 ECM/PCM Power Input Signal Inter

    Heck yes! Tested resistance on everything, minus the ECM to Batt, they were all good. Then my friend showed up with load tester and Driver side Battery FAILED. Napa gets a call tomorrow. So after i put a new battery and clear code, how long of a drive cycle would you think I need before smog...
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    Won't pass smog here in CA. P2509 ECM/PCM Power Input Signal Inter

    Sounds good, I will hopefully give you the results by days end. And thank you.
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    Won't pass smog here in CA. P2509 ECM/PCM Power Input Signal Inter

    Howdy, I am so close to passing smog and can't figure out this code P2509. I checked the grid heater relays, they have 12.53v going in and about 10.20v coming out, when key is turned on before cold start. I am not sure if this is correct because it is using power when on. Should it be closer...
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