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Home >> Chrysler >> 2013 >> 300 SRT-8 Core >> Repair and Diagnosis >> Transmission >> Automatic Trans >> (Drivetrain Control Module (DTCM) - Electrical Diagnostics) >> DTC Troubleshooting >> U0121-Lost Communication With Abs >> When Monitored

When Monitored

Ignition run time is greater than one second.

Battery voltage between 9 and 16 volts.

Engine run time greater than three seconds.