Tacoma PreRunner V6-4.0L (1GR-FE) (2006)
Oxygen Sensor: Testing and Inspection
Air-Fuel Ratio (A/F) Sensor
INSPECTION
INSPECT AIR FUEL RATIO SENSOR
Check the resistance. (Bank 1 Sensor 1)
Using an ohmmeter, measure the resistance between the terminals.
If the result is not as specified, replace the air fuel ratio sensor.