ShopBaseFree forever shop management software for auto repair shops
Try ShopBase Free →
Home/DTC Codes/Cadillac/XTS/2013-2019 3.6L V6/U0170
U0170

Lost Communication with Blind Spot Detection Module

2013-2019 Cadillac XTS 3.6L V6

Low SeverityNetworkGeneric (SAE)

Description

Cannot communicate with the blind spot monitoring system module.

Symptoms

  • Blind spot indicators not working
  • BSM warning light
  • Blind spot system disabled message
  • Side mirror indicators off

Common Causes

  • BSM module failure
  • CAN bus wiring
  • Module power loss
  • Fuse blown
  • BSM sensor blocked or damaged

Diagnostic Steps

  1. Check BSM module fuse
  2. Test power and ground
  3. Check CAN wiring
  4. Inspect BSM sensors in rear bumper
  5. Clean sensor area
  6. Test module with diagnostics

Repair Notes

Check fuses. BSM sensors in rear bumper can be damaged or blocked by dirt/ice.

Related Codes

U0140Lost Communication with Body Control Module

Other Network Codes

U0170 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 U0170 mean on a 2013-2019 Cadillac XTS?

U0170 stands for "Lost Communication with Blind Spot Detection Module". Cannot communicate with the blind spot monitoring system module.

What are the symptoms of U0170 on a Cadillac XTS?

Common symptoms of U0170 include: Blind spot indicators not working, BSM warning light, Blind spot system disabled message, Side mirror indicators off.

What causes U0170 on a 2013-2019 Cadillac XTS?

Common causes of U0170 include: BSM module failure, CAN bus wiring, Module power loss, Fuse blown, BSM sensor blocked or damaged.

View Labor Times | View Torque Specs | View Fluid Specs