Code Definition

P1167 — Heated Oxygen Sensor 1, bank 2 -- at control limit

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Hyundai

About P1167

P1167 is a manufacturer-specific powertrain diagnostic trouble code recorded for Hyundai vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P1167 is stored, the module has detected a bank-specific fault, meaning it applies only to one cylinder bank of a multi-bank engine; and a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

P1167 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

During closed loop operation the Engine Control Module uses the upstream heated oxygen sensor on Bank 2 Sensor 1 to keep the air fuel mixture on the second cylinder bank oscillating around the stoichiometric point, adjusting injection within a defined control range. DTC P1167 is set on Hyundai and Kia vehicles when this Bank 2 oxygen sensor control reaches its control limit, meaning the ECM has applied the maximum correction the lambda loop allows for that bank yet still cannot hold the mixture at target. It points either to a real mixture fault on Bank 2 that exceeds the controller authority,...

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