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Home >> Jeep >> 2012 >> Liberty Limited Jet, 4WD, Part Time >> Repair and Diagnosis >> Engine Performance >> System >> 3.7L - DTCS P2100 To U1418 >> Diagnosis And Testing >> U0121-Lost Communication With Anti-Lock Brake Module >> Set Condition:

Set Condition:

If the Powertrain Control Module (PCM) fails to receive bus messages from the ABS M for approximately 500 ms.

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