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Hyundai
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2021
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Veloster N Standard Trans
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control System Diagnosis (1 Of 3)
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DTC P0139-00: O2 Sensor Circuit Slow Response (Bank 1 - Sensor 2)
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System Inspection
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Exhaust System
Exhaust System
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 Repair
" procedure.
NO
Go to next step below.