L1H1 L2H2 & LHA WB O2 sensors & ECUs
 

Hi all,

I am working on a project to try to make sense of all of the 24300 - 24302 O2 sensor issues vis-a-vis the calibration resistors.

I understand the L1H1 pretty well. And, I can directly derive the pump sensitivity of the sensor from the calibration resistors.

But the later O2 sensors have calibration resistor values that are out of range for the formula that works for the L1H1. I assume that this means that the internal parallel resistor in the ECU is different for the later sensors.

What I would like to ask from the group is to please post a measurement of the internal resistance ( with the power off) of the ECU/harness side of the O2 sensor connector, across the cal resistor pins; along with the model year of the car.

With this, I should be able to build a resistor substitution table to allow the newer sensors to work properly ( with correct calibration ) with the older applications ( Saving $$$ ) Which I would share, of course :)

Thanks, all.