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P1604 Diagnostic Trouble Code Discussion for October 2010

PCM Internal Dual-Port Ram Read/Write Integrity Failure


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Trouble Ticket Help Requests for DTC P1604
Help Request Posted
1996 Cadillac Seville STS 4.6L MIL Lamp on VIN: 1G6KY5294T
P1604: Loss Of IPC Serial Data. this car came to the shop with a problem on the dash, the radio and the a/c no working, the lights on the dash are flashing, (only the transmission position indicator) and the temperature gauge and the fuel gauge don't work either when the problem happens, bec...
October 22, 2010
1996 Cadillac Seville STS 4.6L MIL Lamp on VIN: 1G6KY5294T
P1604: Loss Of IPC Serial Data. this car came to the shop with a problem on the dash, the radio and the a/c no working, the lights on the dash are flashing, (only the transmission position indicator) and the temperature gauge and the fuel gauge don't work either when the problem happens, bec...
October 22, 2010