From Ross-Tech Wiki

01486 - System Function Test activated

Possible Symptoms

  • Malfunction Indicator Light (MIL) ON

Possible Causes

  • When found in Brake Electronics Control Module (J104)
    • Brake Electronics Function Test activated

Possible Solutions

Special Notes

  • Might be stored in Combination with B10B3/037043 in Airbag Control Module (J234), if so perform Function Test first.
  • If the Brake Electronics Function Test procedure will not complete and fault codes are stored in other Powertrain Databus control modules diagnose those issues before replacing ESP components.
  • Refer to the Volkswagen Tech Tip [45-09-05] ONLY if the "Electronic Stabilization Program (ESP) function test does not end after several attempts! https://static.nhtsa.gov/odi/tsbs/2020/MC-10180603-0001.pdf NHTSA