Error code

OBD2 U0169

OBD2U0169
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Lost Communication With Sunroof Control Module.

Severity

moderateCan drive, but sunroof functions may be affected.

Summary

U0169 indicates that the car's computer system has lost communication with the sunroof control module. This issue affects the data bus related to the sunroof.

Symptoms

  • Sunroof functions may be impaired or non-functional.
  • Check engine light is on.

Common Causes

  • Faulty wiring or connectors between the vehicle’s main computer and the sunroof control module.
  • Malfunction of the sunroof control module itself.
  • Corrosion in electrical connections affecting communication with the sunroof system.

Diagnosis

  1. Check for visible damage or corrosion on wiring and connectors related to the sunroof.
  2. Use a diagnostic tool like Torque Pro to check communication between the main computer and the sunroof control module.

Fixes

  • Repair or replace faulty wiring, connectors, or the sunroof control module as needed.

FAQ

How do I diagnose U0169?

Use a diagnostic tool to check communication between the main computer and the sunroof control module.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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