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Home >> Dodge and Ram >> 2023 >> ProMaster 2500 >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> 3.6L - DTCS U0404 To U140A >> DTC Troubleshooting >> U12A8-Lost Communication With Master Cylinder Pressure Sensor >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR AN ACTIVE DTC 
    1. Turn the ignition on.
    2. With the scan tool, read DTCs and record on the repair order.

      Is the DTC active or pending?

      Yes 

      • Go To  2

      No 

  2. CHECK THE ANTI-LOCK BRAKE MODULE FOR DTCS 
    1. With the scan tool, read DTCs in the ABS Module.

      Are there any DTCs in the ABS Module?

      Yes 

      No