Lost Communication with Exhaust Gas Recirculation Module
2019-2019 Buick Enclave 3.6L V6
The 2019 Buick Enclave is equipped with a 3.6L V6 engine. Below you'll find detailed u0108 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
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.
Related Codes
Other Network Codes
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
- U0005High Speed CAN Communication Bus (+) High
- U0006High Speed CAN Communication Bus (-) Open
- U0007High Speed CAN Communication Bus (-) Low
- U0008High Speed CAN Communication Bus (-) High
- U0009High Speed CAN Communication Bus Shorted Together
- U0010Medium Speed CAN Communication Bus
U0108 on Other Vehicles
Common Questions
What does code U0108 mean on a 2019-2019 Buick Enclave?
U0108 stands for "Lost Communication with Exhaust Gas Recirculation Module". Cannot communicate with the EGR system control module.
What are the symptoms of U0108 on a Buick Enclave?
Common symptoms of U0108 include: Check Engine Light, Increased NOx emissions, EGR-related DTCs, Poor fuel economy, Rough idle.
What causes U0108 on a 2019-2019 Buick Enclave?
Common causes of U0108 include: EGR module failure, CAN bus wiring issue, Fuse blown, Connector corrosion, Carbon buildup causing module damage.
Last updated: March 2026