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P1604 Diagnostic Trouble Code Discussion for September 2017

PCM Internal Dual-Port Ram Read/Write Integrity Failure


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Trouble Ticket Help Requests for DTC P1604
Help Request Posted
2005 Chrysler PT Cruiser Touring 2.4L No Start, Stall, MIL Lamp on VIN: 3C3EY55E85
P1604: PCM Internal Dual-Port Ram Read/Write Integrity Failure. ... found intake gaskets and injector o-rings creating vac leak. Inspect timing and found belt off 2 teeth. Continued by replacing and having pcm programmed from dealer. Now I have P0031 and P0037 for O2 heater low. Replace O2 sensors with no improvement. Came...
September 03, 2017
2011 Toyota Sienna LE 3.5L No Start VIN: 5TDKK3DC5B
P1604: Startability Malfunction. After van was towed in, owner called to tell me he was backing out of driveway when it stalled and would not restart. After attempting to repair it himself by replacing all the ign coils, he had it towed to me. After verifying symptoms I checked for spark and ...
September 30, 2017