CAR OBD CODES
B1638body

B1638 – Mirror Driver Right Short To Ground

What does B1638 mean?

B1638 is a manufacturer-specific OBD-II diagnostic trouble code in the Body category. Its definition is: Mirror Driver Right Short To Ground. Body codes (B-codes) cover vehicle body functions including airbags, seat belts, power windows, lighting, horn, wipers, and more.

Code breakdown

SystemB — Body
TypeManufacturer-specific code (meaning may vary by vehicle make and model)

Common symptoms

  • A warning light related to the affected system may be on (e.g. airbag/SRS light)
  • The specific body feature (lighting, wipers, windows, restraints) may not work correctly
  • In some cases the fault is stored without any visible symptom

How to diagnose

  1. 1Scan the body control module (BCM) and any related module to confirm the stored code.
  2. 2Check the wiring and connectors for the affected circuit, including grounds.
  3. 3For restraint (airbag) codes, treat the system with care and consider professional service.
  4. 4Verify the component operates correctly and matches specification.
  5. 5Clear the code and re-test the affected feature.

Severity varies by code and vehicle. Some codes are minor, while others can affect drivability or safety. When in doubt, consult a qualified technician.

Related codes

B1634B1635B1636B1637B1639B1640B1641B1642
Back to all Body Codes →

This information is provided for general reference only and may vary by manufacturer, model, and year. It is not a substitute for professional diagnosis or repair.