FixVault
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Kia
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2012
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Optima Hybrid
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Repair and Diagnosis
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Engine Performance
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System
›
Engine Control System Diagnosis (1 Of 2) - HEV
›
DTC P0139: O2 Sensor Circuit Slow Response-Bank 1 Sensor 2
›
Inspection Repair
›
System Inspection
›
Exhaust System Inspection
Exhaust System Inspection
Check the exhaust system for an exhaust leak near the engine.
Was an exhaust leak found?
YES
Repair as necessary and go to "
VERIFICATION OF VEHICLE REPAIR
" procedure.
NO
Go to next step as below.