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Home >> Chevrolet >> 2017 >> City Express LS >> Repair and Diagnosis >> Body & Frame >> Ignition Switch/Steering Lock >> Immobilizer System >> Diagnostic Information And Procedures >> DTC B2193 Or P1612: Lost Communication With Engine Control Module >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON.
  2. Verify DTC B2193 or P1612 is not set.
    • If DTC B2193 or P1612 is set, replace the K9 Body Control Module 
    • Go to next step: If DTC B2193 or P1612 is not set 
  3. Start the vehicle.
    • If the vehicle starts 
    1. All OK.
    • If DTC B2193 or P1612 is set, replace the K20 Engine Control Module. 
    • Go to next step: If DTC B2193 or P1612 is not set 
  4. All OK
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