how to fix the P0138 oxygen sensor code in my Genesis G70 IG (2017-2023)?

• •Check engine light illuminated
• •Poor fuel economy
• •Engine roughness or misfires
• •Increased emissions
• •Unusual exhaust odor (rich fuel smell)

1. 1Scan for error codes using an OBD-II scanner to confirm P0138 and check for any related codes.
2. 2Inspect the wiring and connectors of the oxygen sensor for any visible damage, corrosion, or loose connections.
3. 3Measure the voltage output of the oxygen sensor using a multimeter while the engine is running.
4. 4Check the oxygen sensor heater circuit for continuity and proper resistance.
5. 5Inspect the exhaust system for any leaks that may affect sensor readings.
6. 6If applicable, verify the operation of the upstream oxygen sensor (Bank 1 Sensor 1) to ensure it’s functioning correctly.

After completing the repair, verify that the issue has been resolved:

• ✓Test the affected component to ensure it functions correctly
• ✓Check for any error codes or warning lights
• ✓Monitor the vehicle for a few days to ensure the issue does not recur

To prevent this issue from occurring again:

• •Follow the manufacturer's recommended maintenance schedule
• •Address warning signs early before they develop into major issues
• •Use quality parts and fluids recommended for your vehicle
• •Keep detailed records of all repairs and maintenance

• •OBD-II scanner
• •Multimeter
• •Oxygen sensor socket
• •Torque wrench
• •Wire brush

• •Replacement oxygen sensor (Bank 1 Sensor 2)
• •Anti-seize compound (if applicable)