P0604 Internal Control Module Ram
October 16, 2021
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P0604 code -The Transmission Control Module (TCM) performs various internal tests to verify proper controll er operation. If the TCM detects an error with the controllers Random Access Memory (RAM), the controller will enter Limpin mode and iluminate the MIL. Set Condition this DTC if the TCM detects an error with the controllers Random Access Memory (RAM)
Possible causes P0604 code:
- Transmission Control Module (TCM)
Repair, using the schematics as a guide, check the Transmission Control Module (TCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the TCM
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