Honda Civic 97

I have a 97 Civic with the Check engine light on. I shorted the bue connector and the only code stored is 41. Does anyone no what this code is and how to fix it?

teg92

code 41 i think is the o2 Sensor Heater. Someone correct me if im wroung

JimBlake

Specifically, the heater for the FRONT O2 sensor.

Unplug the sensor, get an ohm-meter. Measure the resistance between the 2 same-color (black?) wires. They should be 15 to 40 ohms. Then check if either one has continuity to ground. They shouldn't. If it fails any of this, get a new sensor.

If those checks are OK, then you gotta start looking for screwed-up wiring in the car.

swaggs21

or a new ECU, my ECU ate it when I had this error, took like 6 months to track it down....