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Home/DTC Codes/Lincoln/LS/2000-2006 3.9L V8/U0178
U0178

Lost Communication with Rain Sensor Module

2000-2006 Lincoln LS 3.9L V8

Low SeverityNetworkGeneric (SAE)

Description

Cannot communicate with the rain-sensing windshield wiper module.

Symptoms

  • Auto wipers not working
  • Rain sense feature disabled
  • Wipers only work in manual mode

Common Causes

  • Rain sensor failure
  • Wiring issue
  • Sensor not bonded to windshield
  • Fuse blown
  • Windshield replacement error

Diagnostic Steps

  1. Check rain sensor power
  2. Test wiring
  3. Verify sensor bonded to windshield properly
  4. Check fuse
  5. Inspect sensor gel pad

Repair Notes

Check sensor mounting gel pad on windshield. Must be rebonded during windshield replacement.

Related Codes

U0140Lost Communication with Body Control Module

Other Network Codes

U0178 on Other Vehicles

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2003-2005 4.6L V8

Lincoln Aviator

2003-2005 4.6L V8 DOHC

Lincoln Aviator

2020-2024 3.0L Twin-Turbo V6

Lincoln Aviator

2020-2024 3.0L V6 Twin Turbo

Lincoln Aviator Grand Touring

2020-2024 3.0L Twin Turbo V6 PHEV

Lincoln Aviator Grand Touring

2020-2024 3.0L Twin-Turbo V6 Hybrid

Lincoln Aviator Grand Touring

2020-2024 3.0L V6 Twin Turbo Hybrid

Lincoln Continental

2017-2020 2.7L EcoBoost V6

Common Questions

What does code U0178 mean on a 2000-2006 Lincoln LS?

U0178 stands for "Lost Communication with Rain Sensor Module". Cannot communicate with the rain-sensing windshield wiper module.

What are the symptoms of U0178 on a Lincoln LS?

Common symptoms of U0178 include: Auto wipers not working, Rain sense feature disabled, Wipers only work in manual mode.

What causes U0178 on a 2000-2006 Lincoln LS?

Common causes of U0178 include: Rain sensor failure, Wiring issue, Sensor not bonded to windshield, Fuse blown, Windshield replacement error.

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