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Home >> Chrysler >> 2009 >> PT Cruiser Limited >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> DTCS P2504 To U1418 - Gas >> U0121-Lost Communication With Anti-Lock Brake Module >> Diagnostic Test

Diagnostic Test

  1. ACTIVE DTC 
    1. Ignition on, engine not running.
    2. With a scan tool, select View DTCs.

      Is the status Active for this DTC?

      Yes 

      No