I have resolved this fault code:P0888 on my 2004 Dodge Caravan, when I check resistance from the transmission control relay control on the PCM to IPM connector of the relay terminal 85 the power side of the relay, there was an open circuit on the IPM connector of the relay and ground side of relay, so I fly wire from C3(1) ground to the relay terminal 86 and C3(6) power side to terminal 85 of the relay. The problem solved.
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Sunday, August 1st, 2021 AT 11:09 PM