OBD-II Generic Error Code P0167: How to Fix It

Medium 30-60 minutes Medium Severity Verified June 2026
Error Code
P0167
Brand
OBD-II Generic
Product Type
automotive
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
30-60 minutes
Error code P0167 indicates that the oxygen sensor heater circuit for Bank 2 Sensor 3 has failed. This sensor monitors the exhaust after the catalytic converter, and a heater failure can cause poor fuel economy and increased emissions. Fixing it involves checking the sensor's heater circuit and replacing it if necessary.
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Tools You'll Need

How to Fix Error Code P0167

  1. Locate Bank 2 Sensor 3

    Let the engine cool down completely to avoid burns.
  2. Visually Inspect the Sensor and Wiring

  3. Test the Heater Circuit with a Multimeter

    Do not probe the sensor while connected to avoid damaging the ECU.
  4. Check Voltage Supply

  5. Replace the Oxygen Sensor

    Be careful not to over-torque the sensor.
  6. Clear the Error Code and Test Drive

Parts You May Need

Oxygen sensor (Bank 2 Sensor 3)
Check Price on Amazon
Anti-seize compound
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Oxygen sensor (Bank 2 Sensor 3)
Check Price on Amazon
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
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When to Call a Professional

If you are not comfortable working with electrical systems or if the sensor is difficult to access (e.g., rusted or buried under components), consider a professional mechanic. Also, if the code returns after replacement, further diagnosis may be needed.

Frequently Asked Questions

What does error code P0167 mean?
It means the oxygen sensor heater circuit for Bank 2 Sensor 3 has malfunctioned. This sensor is located after the catalytic converter on the side opposite cylinder #1.
Can I drive with a P0167 code?
Yes, but you may experience reduced fuel economy and increased emissions. Prolonged driving can damage the catalytic converter, so it's best to fix it soon.
How much does it cost to fix P0167?
DIY cost is $30–$100 for a new O2 sensor. Professional repair can range from $150–$300 including labor.
What tools do I need to replace an O2 sensor?
You will need an OBD-II scanner, multimeter, O2 sensor socket, torque wrench, and anti-seize compound.
Will disconnecting the battery reset the P0167 code?
Temporarily yes, but the code will return if the heater circuit is not fixed. A proper repair is required.