How to tell if a bank 1 sensor 1 upstream 02 sensor is bad or good with a scan tool using a Toyota Corolla as an example.
How To Test Oxygen Sensor Heated Element: [ Ссылка ]
Amazon Link LAUNCH CR319 Scan Tool: [ Ссылка ]
How To Test an Oxygen Sensor with a Low-Cost Scan Tool
1. Start the engine.
2. Find the 02 sensor volts in live data or data stream.
3. Pump the brakes.
4. The 02 sensor volts should go up, then down, and back to the original state.
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