DESCRIPTION:This fault code sets when EGR delta pressure is too low at high speeds and loads.

MONITORED PARAMETER:EGR delta pressure sensor.

TYPICAL ENABLING CONDITIONS:1. Engine running greater than five minutes.2. Engine speed 1100 to 1850 rpm.3. Engine torque 1400 to 2800 Nm (1033 to 2065 lb.-ft).4. Engine not in regeneration mode.5. Engine must be in steady-state mode.6. Intake manifold temperature greater than 0°C (32°F).7. Desired EGR position greater than 30%.8. Coolant temperature greater than 65°C (149°F).9. Ambient temperature greater than -8°C (17°F) ambient.10. Barometric pressure greater than 755 mbar (10.9 psi).

MONITOR SEQUENCE:None

EXECUTION FREQUENCY:Always enabled

TYPICAL DURATION:5 min

DASH LAMPS:1. MIL2. CEL

ENGINE REACTION:Derate 10%

VERIFICATION:1. Start engine.2. Warm up such that coolant temperature greater than 65°C (149°F).3. Ensure engine is not in regeneration mode.4. Ensure ambient temperature greater than -8°C (17°F) ambient and ambient barometric pressure greater than 755 mbar (10.9 psi).

PROBABLE CAUSES:1. EGR delta p sensor failure.2. EGR delta p connector/harness.3. EGR delta p pressure ports blocked.4. EGR valve failure.5. Inspect the EGR crossover tube and mixer pipe for excessive buildup. If excessive, replaced the EGR cooler.6. Inspect EGR system for leaks/damage/issues.