Volvo All Engines (2017 Emissions) Fault Code: P249D00 PID: EMS Closed Loop Reductant Injection Control At Limit – Flow Too Low
Volvo All Engines (2017 Emissions) Fault Code: P249D00 PID: EMS Closed Loop Reductant Injection Control At Limit – Flow Too Low
When the aftertreatment selective catalytic reduction (SCR) system operates under normal conditions, the aftertreatment control module (ACM) monitors diesel exhaust fluid (DEF) dosing valve duty cycle and DEF pump control value. When the DEF dosing valve duty cycle increases above allowed threshold and the DEF pump control value decreases below expected threshold, the ACM stops DEF dosing and reports a fault. The fault might be indication of electrical failure or blockage in DEF dosing valve or DEF supply line from the DEF tank.
Conditions for diagnostic trouble code (DTC):
1) Buffer control saturated low
Detailed information
1) Max DEF dosing capability reached
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