What does code P1149 mean on Honda vehicles?
The ECU detects that the primary heated oxygen sensor (HO2S) signal is outside expected range or performance.
OBD-II Code Honda
P1149 — Honda — Primary HO2S (Sensor 1) Circuit Range/Performance Problem
The ECU detects that the primary heated oxygen sensor (HO2S) signal is outside expected range or performance.
Common symptoms
- Check engine light
- increased fuel consumption
Possible causes
- Faulty oxygen sensor
- wiring issues
Initial recommendation
Replace primary oxygen sensor and inspect wiring integrity.
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
Use the app to combine Honda code P1149 with your vehicle's actual symptoms for more complete diagnostic guidance.
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