Code Definition

P1167 — Primary Heated Oxygen Sensor (#1) heater circuit, or bank 1 fuel trim too rich during deceleration

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

About P1167

P1167 is a manufacturer-specific powertrain diagnostic trouble code recorded for Honda 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

DTC P1167 is a Honda specific code indicating the primary, or upstream, Air Fuel Ratio sensor on bank 1 is reporting a mixture that is too rich during deceleration. When the driver lifts off and the engine decelerates, the Powertrain Control Module (PCM) expects the mixture to swing lean, often cutting fuel entirely. If the primary sensor instead reports a persistently rich condition on overrun, the PCM logs P1167. The cause can be a genuine rich fault such as leaking injectors or high fuel pressure, a contaminated or biased sensor, or a fault in the sensor or its heater circuit that distorts ...

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