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2010 Mack Granite mp8 engine has fault "PID:411 FMI:14

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2010 Mack Granite mp8 engine...
2010 Mack Granite mp8 engine has fault "PID:411 FMI:14 Differential pressure of the engine recirculated exhaust gases. - Special instructions.
Cleared this fault and ok.
After days work with truck fault comes back, what could be causing this problem
Submitted: 10 months ago.Category: Medium and Heavy Trucks
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Answered in 6 hours by:
9/29/2017
Technician: Daniel Wilson,
 replied 10 months ago
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 6,890
Experience: Owner at DJ Wilson
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Hi my name is***** will be glad to try to help. Bare with me while I look up some info on this to help

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Technician: Daniel Wilson,
 replied 10 months ago

ECM SPN 411, Engine Exhaust Gas Recirculation Differential Pressure –
MID 128 PID 411

Type of
fault:
FMI Description: Fault Condition: Possible
Symptoms:
Possible Cause:
FMI 0 • Data valid but above
normal operational
range - Most severe
level
• Exhaust Gas
Recirculation
(EGR) differential
pressure sensor
output reading too
high. (abnormal
value)
• MIL illuminated
• Engine derate
• Faulty harness
• Faulty harness connector
• Faulty sensor
• EGR leakage
• Clogged EGR cooler
FMI 1 • Data valid but below
normal operational
range - Most severe
level
• Exhaust Gas
Recirculation
(EGR) differential
pressure sensor
output reading too
low. (abnormal
value)
• MIL illuminated • Faulty harness
• Faulty harness connector
• Faulty sensor
• Clogged venturi
FMI 2 • Data erratic,
intermittent or
incorrect
• Only used to
control EGR valve.
• N/A • N/A
FMI 3 • Voltage above
normal or shorted to
high source
• Short to battery in
metering line
• Open in the
ground circuit
• MIL illuminated
• Engine derate
• Faulty EGR differential pressure
sensor connector
• Faulty EGR differential pressure
sensor harness
• Faulty EGR differential pressure
sensor

If all of the above checks out okay you could have an ECU software issue requiring software updating and resetting,

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