Scantool Diagnostics

Engine Control
P0139 HO2S Circuit Slow Response (Bank 1 / Sensor 2) - Scantool Diagnostics:_:Monitor DTC Staus

Monitor DTC Status

1. Check DTC Status
(1) Connect scantool to Data Link Connector(DLC).
(2) IG "ON".
(3) Select "Diagnostic Trouble Codes(DTCs)" mode, and then Press F5(INFO) to check DTC's information from the DTCs menu
(4) Read "DTC Status" parameter.




(5) Is parameter displayed "Present fault"?
YES
1) Go to "Component Inspection" procedure.
NO
1) Clear DTC and check if this DTC is set after test-driving under enable conditions. If DTC isn't displayed after the test, it was intermittent fault. Go to "Verification of Vehicle Repair" procedure.