What does code P0144 mean?
Excessively high voltage detected at the rear oxygen sensor indicating rich mixture or short circuit
OBD-II Code
P0144 — Oxygen Sensor Circuit High Voltage Bank 1 Sensor 3
Excessively high voltage detected at the rear oxygen sensor indicating rich mixture or short circuit
Common symptoms
- Strong exhaust odor
- occasional dark smoke
- increased fuel consumption
Possible causes
- Signal shorted to voltage
- damaged oxygen sensor
- excessive fuel delivery
Initial recommendation
Inspect wiring, verify fuel pressure, replace oxygen sensor if needed.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0144 with your vehicle's actual symptoms for more complete diagnostic guidance.
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