DTC P1604 (Flash Code 96) RAM Data Protect (AWR6B45)

1. DTC P1604 description

This diagnosis is performed on the microprocessor inside the TCM. If the TCM detects a control unit internal malfunction, the DTC is set.

2. Condition for setting DTC P1604

  • The TCM detects a RAM malfunction.

3. Action taken when DTC P1604 sets

  • The TCM flashes the check trans warning light. Refer to Action taken when DTC sets - Type C.

Refer to "55.Transmission Control 5A.Troubleshooting(AWR6B45) DTC type definitions".

  • Reset the TCM.

4. Condition for clearing DTC P1604

  • Refer to Condition for clearing the check trans warning light/DTC - Type C.

Refer to "55.Transmission Control 5A.Troubleshooting(AWR6B45) DTC type definitions".

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