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P2509 Diagnostic Trouble Code Discussion for June 2011

ECM / PCM Power Input Signal - Intermittent

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Trouble Ticket Help Requests for DTC P2509
Help Request Posted
2005 Dodge Ram 3500 SLT 5.9L Fan control VIN: 3D7LS38C25
P2509: Ecm/Pcm power supply intremittent. Hello all thanks for your help up front! What I have now is on first start hot or cold very poor fan speed high side psi goes over 400 psi and shuts down a/c. With scaner hooked up both fan speed and % control is zero with no change what ever I do.I'm runing t...
June 21, 2011