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Home >> Saab >> 1989 >> 9000 Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Tests W/Codes >> Fault Codes (Without Using ISAT Scan Tester) >> Error Code 12225

Error Code 12225

  1. The check engine light is on. Oxygen sensor output is incorrect. Sensor pre-heater circuit may be open. Engine temperature must be above 158°F.
  2. Check oxygen sensor output voltage (voltage fluctuating between 0 and 1.0 volt). Check oxygen sensor pre-heater circuit and fuse.
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