P0167: O2 Sensor Heater Circuit — Bank 2 Sensor 3
What to do
No driveability impact. Blocks emissions readiness until repaired.
What this code means
A heater circuit fault on the bank 2 third sensor, overlapping with P0062. This completes the thirty-six oxygen sensor signal and heater codes spanning P0130 to P0167 — read as a group, the pattern of which sensors and which banks report is what separates a single failed sensor from a shared supply, ground or exhaust leak.
Likely causes
Start here
- Failed oxygen sensor heater element · easy
- Corroded or loose connector · easy
- Road damage to underfloor wiring · moderate
Less common
Symptoms
Components involved
Information, not instruction
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Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
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What makes one worth reading:
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- What you measured, not only what you replaced.
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