U0141
Lost Communication with Front ECM A
2004-2007 Buick Rainier 4.2L I6
Moderate SeverityNetworkGeneric (SAE)
Description
Cannot communicate with the front electronic control module A, often managing front body electronics.
Symptoms
- Front lighting issues
- Front park assist not working
- Front wiper issues
- DRL malfunction
Common Causes
- Front ECM failure
- CAN bus wiring
- Module power loss
- Fuse blown
- Front-end collision damage
Diagnostic Steps
- Check front ECM fuse
- Test power and ground
- Check CAN wiring
- Inspect for collision damage
- Test module directly
Repair Notes
Check for front-end damage. Module located in front of vehicle is susceptible to impact and water.
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
U0141 on Other Vehicles
Common Questions
What does code U0141 mean on a 2004-2007 Buick Rainier?
U0141 stands for "Lost Communication with Front ECM A". Cannot communicate with the front electronic control module A, often managing front body electronics.
What are the symptoms of U0141 on a Buick Rainier?
Common symptoms of U0141 include: Front lighting issues, Front park assist not working, Front wiper issues, DRL malfunction.
What causes U0141 on a 2004-2007 Buick Rainier?
Common causes of U0141 include: Front ECM failure, CAN bus wiring, Module power loss, Fuse blown, Front-end collision damage.