Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 2659
FMI: 20

Description: EGR High Flow Rate detected
Troubleshooting:
The Air Management Systems (AMS) test is a test performed on the Exhaust Gas Recirculation
(EGR) system. During the test, engine speed is increased, injection timing and Injection
Control Pressure (ICP) are fixed, and the EGR valve is closed. The EGR valve is later opened
during the test. Airflow is measured during the test and if the measurements are not within the
minimum and maximum values expected a code is set.
Probable causes:
1) Charge Air Cooler (CAC) system leaks
2) Biased EBP sensor or circuit
3) Biased IMP sensor or circuit
4) EGR valve sticking closed

Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 2659
FMI: 21

Description: EGR Low Flow Rate detected
Troubleshooting:
The Air Management Systems (AMS) test is a test performed on the Exhaust Gas Recirculation
(EGR) system. During the test, engine speed is increased, injection timing and Injection
Control Pressure (ICP) are fixed, and the EGR valve is closed. The EGR valve is later opened
during the test. Airflow is measured during the test and if the measurements are not within the
minimum and maximum values expected a code is set.
Probable causes:
1) Restricted airflow (intake or exhaust)
2) Restricted EGR cooler
3) Biased EBP sensor or circuit
4) Plugged EBP sensor tube
5) Biased IMP sensor or circuit
6) EGR valve sticking closed

Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 2791
FMI: 2

Description: EGR valve communication fault
Troubleshooting:
The Exhaust Gas Recirulation valve is a part of the EGR system that is used to reduce the
formation of NOX. The Exhaust Gas Recirculation Valve recirulates exhaust back into the
intake stream. Exhaust gases that have already burned do not burn again which cools
combustion and reduces NOX.
Probable causes:
1) EGR-P circuit fault
2) Failed EGR valve

Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 2791
FMI: 3

Description: EGRP signal Out of Range HIGH
Troubleshooting:
The Exhaust Gas Recirulation valve is a part of the EGR system that is used to reduce the
formation of NOX. The Exhaust Gas Recirculation Valve recirulates exhaust back into the
intake stream. Exhaust gases that have already burned do not burn again which cools
combustion and reduces NOX.
Probable causes:
1) B+ over 18 volts to EGR valve
2) Jump start with 24-volt system or generator
3) Defective alternator
4) Battery charger on boost mode