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Common faults

The truck does not start
No throttle/Intermittent throttle
No CPC communication
CPC4 reads as a different module CPC2
Check engine light due to CPC
CPC failure with faulty codes SPN 609 FMI 12
DEF engine light blinks red in full tank
Check Engine Light
ABS Light
Dashboard Cluster loses communication
Not counting mileage correctly

Specific Vehicles affected by this issue:

20142019 Freightliner Cascadia (Click Here)
2013+ Freightliner 122SD
2013+ Freightliner M2
2013+ Thomas Bus
2013+ Western Star 4700/4800/4900/6900
2013+ Oshkosh, Terex, and Pierce trucks with Detroit Diesel Engines

Affected part numbers:

A0034461002 / 001
A0034461002 / 002
A0034461002 / 003
A0034461002 / 004
A0034461002 / 005
A0034461102 / 002
A0034461102 / 003
A0034461102 / 004
A0034461102 / 005
A0034461202 / 001
A0034461302 / 001
A0064463402 / 001