DESCRIPTION:Exhaust Gas Recirculation (EGR) flow target error – actual flow above the threshold of desired flow.

MONITORED PARAMETER:EGR Mass Flow

TYPICAL ENABLING CONDITIONS:1. Desired EGR mass flow greater than .08.2. EGR in closed-loop control, CAC outlet temperature greater than 0°C (32°F).3. Engine Speed 1080 to 2500 rpm.4. Engine torque 200 to 2500 N·M (148 to 1894 lb·ft).5. Coolant temperature greater than 65°C (149°F).6. Ambient temperature greater than -8°C (17.6°F) Ambient.7. Barometric pressure greater than 755 Mbar (11 psi).

MONITOR SEQUENCE:None

EXECUTION FREQUENCY:Always enabled

TYPICAL DURATION:20

DASH LAMPS:1. MIL2. CEL

ENGINE REACTION:Derate 25%

VERIFICATION:1. Start engine.2. Warm up such that coolant temperature greater than 65°C (149°F).3. Ensure ambient temperature greater than -8°C (18°F).4. Ambient Barometric pressure greater than 755 mbar (11 psi).5. Desired EGR mass flow greater than .08.6. EGR in closed-loop control.7. CAC outlet temperature greater than 0°C (32°F).8. Engine speed 1080 to 2500 rpm.9. Engine torque 200 to 2500 N·m (148 to 1894 lb·ft).

PROBABLE CAUSES:1. EGR delta p sensor.2. EGR delta p harness/connector.3. EGR delta p sensor port.4. EGR valve.