Legacy Code 32 O2 Sensor

1990 Subaru XT-6 4WD L6-2.7L SOHCSECTION Legacy Code 32 O2 Sensor
A complaint of ECS light "on" Code 32 (O2 Sensor), where no component failures can be confirmed, could be caused by the oxygen sensor exterior body being filled with water. This situation can occur from driving through standing water, snow and/or from a car wash. Clear the ECU memory and test drive and confirm that Code 32 does not reappear in memory.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.