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Home >> Fiat >> 2017 >> 500L Pop >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> (Transmission Control Module (TCM) - Electrical Diagnostics, Aw60T/6F25 Automatic Transmission - 500L) >> DTC Troubleshooting >> U0121-00 Lost Communication With Anti-Lock Brake System (Abs) Control Module >> Set Condition

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Set Condition

Bus messages not received from the Braking System Module (BSM) for approximately two to five seconds.

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