- Check heater resistance of heated oxygen sensor.
(a) Uncouple oxygen sensor joint.
(b) Place digital universal meter at ohm gear, and connect 2 terminals respectively to 1# (white) pin and
2# (black) pin, and the resistance under normal temperature is 1 6 - Check fuel tank cover.
Visually check fuel tank cover and gasket are distorted or damaged.
Exhaust gas control - Exhaust gas control system24
Oxygen sensorMain relay