Component Inspection

Engine Control
P0139 O2 Sensor Circuit Slow Response (Bank 1 / Sensor 2) - Component Inspection

Component Inspection

1. Visually/physically inspect the following conditions:
'- Ensure that the sensor is securely installed
'- Check for corrosion on terminals
'- Check for damaged wiring
'- Repair as necessary and go to next step
2. Warm up the engine to normal operating temperature and let it idle.
3. Connect GD Sand monitor the O2 SNSR VOL.-B1/S2 parameter on the GDS data list.

Specification : Above 0.6 V at idle

4. Is sensor data near the specified value?