Lost Communication with Parking Brake Control Module
2014-2014 Cadillac SRX 3.0L V6
The 2014 Cadillac SRX is equipped with a 3.0L V6 engine. Below you'll find detailed u0127 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Cannot communicate with the electronic parking brake module.
Symptoms
- Parking brake warning light
- Electronic parking brake inoperative
- Brake warning message
- Cannot release parking brake
- Hill hold not working
Common Causes
- EPB module failure
- CAN bus wiring
- Module power loss
- Fuse blown
- EPB actuator failure
Diagnostic Steps
- Check EPB module fuse
- Test module power and ground
- Check CAN wiring
- Try manual EPB release procedure
- Test EPB actuator motors
Repair Notes
If parking brake is stuck engaged, use manual release procedure first. Check fuses.
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
U0127 on Other Vehicles
Common Questions
What does code U0127 mean on a 2014-2014 Cadillac SRX?
U0127 stands for "Lost Communication with Parking Brake Control Module". Cannot communicate with the electronic parking brake module.
What are the symptoms of U0127 on a Cadillac SRX?
Common symptoms of U0127 include: Parking brake warning light, Electronic parking brake inoperative, Brake warning message, Cannot release parking brake, Hill hold not working.
What causes U0127 on a 2014-2014 Cadillac SRX?
Common causes of U0127 include: EPB module failure, CAN bus wiring, Module power loss, Fuse blown, EPB actuator failure.
Last updated: March 2026