Assuming you mean P1618 here's a cut & paste from another forum:
p1618 is usually a communication error code between the ecu / tcu and trans most of the time a bad connection
Some of the times it has to do with the abs module but Its hard to tell unless you have a tester abs module. it could be anything from the pnp wiring to a corroded pin on the ecu or abs module
Bill
63 PV544 (attempted restoration)
83 245 DL OSD (transferred to son)
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