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Home › Chrysler › 2012 › 300 SRT-8 › Repair and Diagnosis › Transmission › Transmission Control Systems › Transmission Control Module (TCM) - Nag1 Automatic Transmission › Diagnosis And Testing › U0121-Lost Communication With Anti-Lock Brake Module › Set Condition:

Set Condition:

Bus messages not received from the Body Control Module (BCM) for approximately two to five seconds.

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