P1604 Diagnostic Trouble Code Discussion for July 2022
PCM Internal Dual-Port Ram Read/Write Integrity Failure
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| Help Request | Posted | |
| 2012 Toyota Tundra 5.7L No Start VIN: 5TFUY5F18C truck will only start after five or six tries. truck will start when blue wire from fuel pump module to fuel pump is energized. the fuel pump relay has been swapped. my question is this a failure pattern or a bad fuel pump driver module. |
July 20, 2022 |
