ShopBaseFree forever shop management software for auto repair shops
Try ShopBase Free →
Home/DTC Codes/Chevrolet/Impala/2000-2005 3.8L V6/U0108
U0108

Lost Communication with Exhaust Gas Recirculation Module

2000-2005 Chevrolet Impala 3.8L V6

Moderate SeverityNetworkGeneric (SAE)

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

  1. Check EGR module fuse
  2. Test power and ground
  3. Inspect CAN wiring
  4. Check connector condition
  5. Test EGR module directly

Repair Notes

Check fuses and wiring. EGR modules on diesels are prone to carbon contamination.

Related Codes

P0401EGR Flow Insufficient DetectedP0403EGR Control CircuitU0100Lost Communication with ECM/PCM

Other Network Codes

U0108 on Other Vehicles

Chevrolet Astro

1995-2005 4.3L V6 Vortec

Chevrolet Avalanche

2002-2006 5.3L V8 Vortec

Chevrolet Avalanche

2002-2006 8.1L V8 Vortec

Chevrolet Avalanche

2007-2013 5.3L V8 Vortec

Chevrolet Avalanche

2007-2013 6.0L V8 Vortec

Chevrolet Aveo

2012-2018 1.6L I4

Chevrolet Beat

2018-2021 1.2L I4

Chevrolet Beretta

1990-1996 2.2L I4

Common Questions

What does code U0108 mean on a 2000-2005 Chevrolet Impala?

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 Chevrolet Impala?

Common symptoms of U0108 include: Check Engine Light, Increased NOx emissions, EGR-related DTCs, Poor fuel economy, Rough idle.

What causes U0108 on a 2000-2005 Chevrolet Impala?

Common causes of U0108 include: EGR module failure, CAN bus wiring issue, Fuse blown, Connector corrosion, Carbon buildup causing module damage.

View Labor Times | View Torque Specs | View Fluid Specs