Code Definition

P1164 — Primary Heated Oxygen Sensor (#1) circuit

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

About P1164

P1164 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 P1164 is stored, the module has detected 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.

P1164 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 P1164 is a Honda specific code for a range or performance problem in the primary, or upstream, Heated Oxygen Sensor (Sensor 1) circuit. Unlike a hard electrical fault, this code sets when the primary sensor signal is present but does not behave the way the Powertrain Control Module (PCM) expects, for example sitting biased to one side, not correlating with commanded fuelling, or staying outside the normal range for current conditions. The cause is usually an aging or contaminated sensor, an exhaust leak skewing the sample, or a fuelling fault holding the mixture off centre. With this code ...

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