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Genesis
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2018
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G90 3.3T Premium, AWD
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Repair and Diagnosis
›
Engine Performance
›
System
›
Engine Control System Diagnosis - 3.3L (2 Of 6)
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DTC P0139: O2 Sensor Circuit Slow Response (Bank 1/Sensor 2)
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System Inspection
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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 below.