What does code P1165 mean on Honda vehicles?
The ECU detects abnormal range or performance from the primary oxygen sensor, affecting fuel control.
OBD-II Code Honda
P1165 — Honda — Primary HO2S (No. 1) Circuit Range/Performance
The ECU detects abnormal range or performance from the primary oxygen sensor, affecting fuel control.
Common symptoms
- Increased fuel consumption
- poor efficiency
Possible causes
- Aged oxygen sensor
Initial recommendation
Replace primary oxygen sensor and verify fuel trim operation.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
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