Lost Communication with Immobilizer Control Module
2013-2019 Cadillac XTS 3.6L V6
Description
Cannot communicate with the vehicle immobilizer/theft deterrent module.
Symptoms
- Vehicle will not start
- Security light flashing
- Key not recognized
- Immobilizer warning on
Common Causes
- Immobilizer module failure
- CAN bus wiring
- Module power loss
- Fuse blown
- Key transponder issue
- Antenna ring failure
Diagnostic Steps
- Check immobilizer module fuse
- Test power and ground
- Check CAN wiring
- Test key transponder signal
- Inspect antenna ring around ignition
- Check for correct key programming
Repair Notes
Security system. Check key transponder and antenna ring. May need key relearning procedure.
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
U0167 on Other Vehicles
Cadillac ATS
2013-2019 2.0L Turbo I4
Cadillac ATS
2013-2019 2.5L I4
Cadillac ATS-V
2016-2019 3.6L Twin-Turbo V6
Cadillac CT4
2020-2024 2.0L Turbo I4
Cadillac CT4
2020-2024 2.7L Turbo I4
Cadillac CT4-V
2020-2024 2.7L Turbo I4
Cadillac CT4-V Blackwing
2022-2024 3.6L Twin-Turbo V6
Cadillac CT5
2020-2024 2.0L Turbo I4
Common Questions
What does code U0167 mean on a 2013-2019 Cadillac XTS?
U0167 stands for "Lost Communication with Immobilizer Control Module". Cannot communicate with the vehicle immobilizer/theft deterrent module.
What are the symptoms of U0167 on a Cadillac XTS?
Common symptoms of U0167 include: Vehicle will not start, Security light flashing, Key not recognized, Immobilizer warning on.
What causes U0167 on a 2013-2019 Cadillac XTS?
Common causes of U0167 include: Immobilizer module failure, CAN bus wiring, Module power loss, Fuse blown, Key transponder issue, Antenna ring failure.