P249D - Closed Loop Reductant Injection Control At Limit - Flow Too Low
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DTC DESCRIPTION P249D - CLOSED LOOP REDUCTANT INJECTION CONTROL AT LIMIT (FLOW TOO LOW)
| Description: The 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 when the correction factor reaches a negative threshold for 5 minutes. | |||
Possible Causes:
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| Diagnostic Aids: This DTC is informational only and may be accompanied by other DTCs. Diagnose other DTCs first. If DTC P229F is present along with DTC P249D, diagnose DTC P229F first. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST RK . | ||