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P249E - Closed Loop REDUCTANT Injection Control At Limit - Flow Too High

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P249E - CLOSED LOOP REDUCTANT INJECTION CONTROL AT LIMIT - FLOW TOO HIGH

Description:  The powertrain control module (PCM) adapts a closed-loop correction factor to account for long term drift of the selective catalytic reduction (SCR) system. This correction factor is monitored continuously. This DTC sets if the correction factor reaches a positive threshold for 5 minutes.
Possible Causes: 
  • Damaged SCR system components
  • Biased NOx sensor
Diagnostic Aids:  This DTC is informational only and may be accompanied by other DTCs. Diagnose other DTCs first. If DTC P2201 is present along with DTC P249E, diagnose DTC P2201 first.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST RK .