DESCRIPTION:Exhaust Gas Recirculation (EGR) flow target error diagnostic – high flow.

MONITORED PARAMETER:EGR Mass Flow

TYPICAL ENABLING CONDITIONS:1. Desired EGR mass flow greater than .08.2. EGR in closed loop control.3. Charge air cooler (CAC) outlet temperature greater than 0°C (32°F).4. Engine speed 1080-2500 rpm.5. Engine torque 200 to 2500 N·m (148 to 1844 abaft).6. Coolant temperature greater than 65°C (149°F).7. Ambient temperature greater than -8°C (18°F) ambient.8. Barometric pressure greater than 755 mbar.

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 EGR in closed loop control.6. CAC outlet temperature greater than 0°C (32°F).7. Engine speed 1080 to 2500 rpm.8. 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.