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Home › Saab › 2010 › 9-5 › Repair and Diagnosis › Engine Performance › System › Engine Management And Fuel System, V6 (2 Of 5) › DTC P0130: HO2S Circuit Closed Loop Performance Sensor 1 › Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the B52 HO2S 1.
  2. Ignition ON, verify that the scan tool HO2S 1 parameter is between 350-500 mV.
  3. If greater than the specified range, test the signal circuit of the HO2S 1 for a short to the heater circuit. If the circuit/connections test normal, replace the K20 ECM.
  4. If all circuits/connections test normal, replace the B52 HO2S 1.
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