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Oxidized O2 Sensor Cable

Oxygen sensor cable shows oxidation causing electronics damage.

Possible causes:

  • Old sensor leaking corrosive electrolyte
  • High humidity exposure
  • Galvanic corrosion

Step-by-step troubleshooting:

  • Immediately disconnect affected sensor
  • Clean visible oxidation with isopropyl
  • Check board for green corrosion
  • Document damage extent with photos

When to contact service: Oxidation damage typically requires board replacement and sensor cable service.