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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
  1. B

    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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