EGR differential pressure data erratic
The ECM is getting a signal but it jumps around or does not make sense. Nine times out of ten this is a connection, not a part.
SPN 411 — EGR differential pressure data erratic
SPN 411 is the parameter the ECM is flagging on CAT, Detroit, International, PACCAR, MERCEDES, Volvo, Mack, Cummins engines. The FMI that comes with it tells you how it failed. Each failure mode below has its own causes and its own test order — do not treat them as the same repair.
EGR differential pressure data erratic
The ECM is getting a signal but it jumps around or does not make sense. Nine times out of ten this is a connection, not a part.
EGR differential pressure data erratic
The ECM is getting a signal but it jumps around or does not make sense. Nine times out of ten this is a connection, not a part.
EGR differential pressure data erratic
The ECM is getting a signal but it jumps around or does not make sense. Nine times out of ten this is a connection, not a part.
EGR differential pressure data erratic
The ECM is getting a signal but it jumps around or does not make sense. Nine times out of ten this is a connection, not a part.
EGR differential pressure data erratic
The ECM is getting a signal but it jumps around or does not make sense. Nine times out of ten this is a connection, not a part.
EGR differential pressure data erratic
The ECM is getting a signal but it jumps around or does not make sense. Nine times out of ten this is a connection, not a part.
EGR differential pressure data erratic
The ECM is getting a signal but it jumps around or does not make sense. Nine times out of ten this is a connection, not a part.
EGR differential pressure sensor high
The signal wire is seeing more voltage than the circuit should ever produce — usually the signal wire touching battery power or the 5 V reference.
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