The general consensus was the primary O2 sensor was bad, so I bought direct fit replacement: WALKER Part # 25025001, which listed the 92 -95 VX and 92 - 01 HX as valid vehicles for this part number. I replaced the sensor yesterday (correct plug, no splicing anything), and the CEL came on w/ the primary O2 sensor code (61) after 10 miles. I figured I should have reset the ECU, so I disconnected the negative battery cable, waited a couple of minutes, and reconnected it. The CEL came on again about 50 miles later.
Any suggestions about what the problem is? Should I have bought the genuine Honda O2 sensor? There was no CEL before replacing this except a few times in the last couple of years as described in the thread mentioned above. Any suggestions is appreciated.
Found out from the auto parts store where I purchased the Walker O2 sensor that they had a bad batch of these with 80% of them returned. Not sure if it was only this specific Walker part number or all Walkers. I returned it for a full refund and purchased a $99 unit that someone recommended on another thread. No CEL.
Reallyslow: I've posted many times (and seen other posts) about resetting the HX ecu by disconnecting the negative battery cable and no one has ever mentioned that a scan tool is necessary to do this. Can anyone else verify this? Do I need to reset the ecu after installing the new O2 sensor 6 weeks ago, or does the ecu adapt to the new O2 sensor on its own?