2019 Ford Transit-250 Base, 2D Cab Chassis, 3.2L Eng VIN VFACTORY OEM SERVICE PROCEDURE

DTC U02A2 - Lost Communication With Reductant Quality Module

DTC DESCRIPTION U02A2 - LOST COMMUNICATION WITH REDUCTANT QUALITY MODULE

Description:  This DTC sets when the PCM does not receive the reductant level sensor message within the defined amount of time.
Possible Causes: 
  • Radio frequency interference or electromagnetic interference
  • Damaged reductant level sensor
Diagnostic Aids:  The presence of this DTC may indicate the vehicle is operating in derate mode and may experience a loss of power. After repair, the vehicle may still display a system warning message. Drive the vehicle until the system warning message has cleared from the instrument cluster message center.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST RJ .
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
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  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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