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P1604 Diagnostic Trouble Code Discussion for February 2017

PCM Internal Dual-Port Ram Read/Write Integrity Failure


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Trouble Ticket Help Requests for DTC P1604
Help Request Posted
2011 Toyota Corolla S 1.8L Poor Idle Quality, MIL Lamp on VIN: 2T1BU4EE6B
P1604: Startability Malfunction. ... P0015,P0016,P0017 and P1604. When trying to clear codes, P0015 will come back as a hard fault in history, pending, and current and all other codes follow when engin...
February 02, 2017