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DTC P0604: Internal Control Module Random Access Memory (Ram) Error: Notes

  1. - 

    DTC detecting condition: 

    Immediately at fault recognition

    Trouble symptom: 

    TCM RAM is faulty.

    CAUTION: After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. Ref. to Transmission (Diagnostics)>Basic Diagnostic Procedure .
  1. CHECK DTC  .
    1. Using the Subaru Select Monitor, perform the clear memory of [Transmission]. Ref. to COMMON (DIAG)>CLEAR MEMORY .
    2. Read the DTC of [Transmission] using the Subaru Select Monitor. Ref. to Transmission (Diagnostics)>Diagnostic Trouble Code (DTC) .

    Is DTC P0604 displayed?

    Yes:  Replace the TCM. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>TRANSMISSION CONTROL MODULE (TCM) . Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>TRANSMISSION CONTROL MODULE (TCM) .

    No:  Current condition is normal. Check for interference from noise, etc.

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