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.