Air Fuel Ratio Sensor: Inspection

WARNING: This page is about a different variant/trim than selected.

INSPECT AIR FUEL RATIO SENSOR (for Bank 1 Sensor 1)

Measure the resistance according to the value (s) in the table below.

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
1 (HA1A) - 2 (+B)	20°C (68°F)	1.8 to 3.4 Ω

If the result is not as specified, replace the air fuel ratio sensor.

Fig 1: Identifying Air Fuel Ratio Sensor Connector