m18x1.5 is the threading for Honda civic/del sols, and probably most other o2 sensor bungs
That would be the O2 sensor after the catalytic converter.
its part of the exhaust system
i would like a wiring diagram for a Honda civic o2 sensor
above the cataylic converter
O2 Sensor malfunction, Bank 1, Sensor 1
the o2 sensor is in the exaust manifold or down pipe it looks like a sparkplug with wires
Your injectors are leaking, or your O2 sensor is dead, or misreading.
4 wires, the black ones are the O2 heater (on the sensor side), the white and green are the O2 sensor itself
bottom of the stock manifold on the left hand side
All O2 sensors are located somewhere on the exhaust system.
9 time out of 10, the heater circuit internal to the sensor has failed. Replace the sensor.