U0108moderate severityNetwork
Lost Communication with Exhaust Gas Recirculation Module
on 2014 Ram 2500 6.7L I6 Cummins Diesel · 4WD
What this code means
Cannot communicate with the EGR system control module.
Symptoms
- Check Engine Light
- Increased NOx emissions
- EGR-related DTCs
- Poor fuel economy
- Rough idle
Common causes
- EGR module failure
- CAN bus wiring issue
- Fuse blown
- Connector corrosion
- Carbon buildup causing module damage
Diagnostic steps
- Check EGR module fuse
- Test power and ground
- Inspect CAN wiring
- Check connector condition
- Test EGR module directly
Repair notes
Check fuses and wiring. EGR modules on diesels are prone to carbon contamination.
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Other Network codes on this vehicle
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0006
High Speed CAN Communication Bus (-) Open
U0007
High Speed CAN Communication Bus (-) Low
U0008
High Speed CAN Communication Bus (-) High
U0009
High Speed CAN Communication Bus Shorted Together
U0010
Medium Speed CAN Communication Bus