-=65 Secondary oxygen sensor heater wire (black wires)=-

What are heater wires? Should I replaced the whole o2 sensor and connector? Or are the heater wires located somewhere else?

Thanks
Jason

 

I believe it is just part of the normal secondary o2. Try replacing it, and keep the packing nice incase that was not your problem.

I'm not sure though.. lol

-Jason

 

The secondary o2 sensor would mean the downstream one, aka post catalytic converter?

Jason

 

got the same code 65 for the last month or so... you shouldn't worried about it... it simply mean that your o2 sensor will take a longer time to get to the right temperature for a good reading... and your car may be less economic on gas...

obd2 cars tend to get that kind of bad reading from the o2 sensors... if you really want to replace it... it'll cost you ± 150$ for the sensor and the whole plug/wires assembly...

 

Any other codes we "shouldn't worry about" besides 65?

Unplug the O2 sensor (post-cat) from the engine harness. Using a meter, measure the resistance between the two black wires. It should be 15-40ohms. If it's not, replace it (NTK/NGK, Denso....do not use Bosch, Walker or any 'universal' O2 sensor that requires wiring).