Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSGENESIS2020G90 3.3T PREMIUM, AWDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM DIAGNOSIS - 3.3L (2 OF 5)DTC P0136-00: O2 SENSOR CIRCUIT (BANK 1/SENSOR 2)DTC INSPECTIONGDS DATA ANALYSIS
2020 Genesis G90 3.3T Premium, AWD
GDS Data Analysis
2020 Genesis G90 3.3T Premium, AWDSECTION GDS Data Analysis
- Connect GDS and select "DTC Analysis" mode.
- Warm up the engine.
- Monitor the parameters related to DTC on the "Current Data" menu of the GDS as below.
- Is parameter displayed within specifications?
YES
- Fault is intermittent caused by poor contact in the sensor's and/or ECM's connector. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Go to next procedure.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.