OBD-II Generic Error Code P0163: How to Fix It
Medium 1-2 hours Medium Severity
Verified June 2026
- Error Code
- P0163
- Brand
- OBD-II Generic
- Product Type
- automotive
- Severity
- Medium
- DIY Difficulty
- Medium
- Estimated Fix Time
- 1-2 hours
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Tools You'll Need
- OBD2 scanner
- Multimeter
- O2 sensor socket
- Ratchet and extension
- Anti-seize compound (if not pre-applied)
- Jack and jack stands (if sensor is hard to reach)
How to Fix Error Code P0163
-
Check for Loose or Damaged Wiring
Ensure the engine is off and cool before working near exhaust components. -
Test O2 Sensor Voltage with a Multimeter
Be careful not to short the probe to the exhaust or other metal parts. -
Check for Exhaust Leaks
Exhaust components can be very hot. Allow the vehicle to cool completely. -
Replace the O2 Sensor
Do not over-tighten the sensor as it may damage the threads. -
Clear the Code and Test Drive
Parts You May Need
Oxygen sensor (bank 2 sensor 3)
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Anti-seize compound
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Oxygen sensor (bank 2 sensor 3)
Check Price on Amazon
Anti-seize compound
Check Price on Amazon
Oxygen sensor (bank 2 sensor 3)
Check Price on Amazon
Anti-seize compound
Check Price on Amazon
Oxygen sensor (bank 2 sensor 3)
Check Price on Amazon
Anti-seize compound
Check Price on Amazon
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When to Call a Professional
If you've replaced the sensor and checked wiring but the code returns, or if you suspect a problem with the ECU, take the vehicle to a professional. Also, if the sensor is in a difficult location (e.g., on a truck or AWD car), a shop may have better access.Frequently Asked Questions
Can I drive with error code P0163?
Yes, but it may reduce fuel economy and could cause other sensors to adapt incorrectly. It's best to fix it soon.
What does bank 2 sensor 3 mean?
Bank 2 is the side of the engine opposite cylinder #1. Sensor 3 is the third oxygen sensor in order from the engine, usually after the catalytic converter.
Is P0163 the same as P0137?
No. P0137 is for bank 1 sensor 2. They have similar causes but different locations.
Will a bad O2 sensor cause check engine light to flash?
No, a flashing check engine light indicates a severe misfire that could damage the catalytic converter. P0163 usually causes a steady light.
Do I need to disconnect the battery when changing the O2 sensor?
It's not strictly necessary, but it's safe practice to avoid short circuits. Many people do it to reset the ECU.