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Home >> Fiat >> 2017 >> 500 Abarth, Automatic Trans >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> (Transmission Control Module (TCM) - Electrical Diagnostics - Fiat 500) >> DTC Troubleshooting >> P0604 Control Unit Faulty (Microprocessor) >> Set Condition
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Set Condition

When the TCM cannot correctly write to, or read from the RAM.



The TCM has detected a problem with the lever switch 1 sensor.

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