Denso 234-4209 Oxygen Sensor

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1. G. Forster says

   January 1, 2015 at 2:52 am
   26 of 28 people found the following review helpful

   
   Near-perfect replacement, October 27, 2009

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   G. Forster (Atlanta, GA) –
   
     

   Verified Purchase(What’s this?)

   This review is from: Denso 234-4209 Oxygen Sensor (Automotive)

   After removing the original sensor that had failed, I installed this one, using the original wiring/plug. The wiring for the original one seemed a little short, so I installed this one with 1″ more cable – you can’t do that with the OEM replacement.

   I chose the Denso over other brands, because that is what the original was. The sensor body is identical to what was removed.

   This was a fraction of the cost of a ready-to-install sensor, but it was well worth the effort to do a little work.

   The only criticism is that the shrink-tubing provided to seal the splices seemed to take longer than I expected to shrink down. I used a Bic lighter, as I have done with other shrink tubing. It just seems like it took a long time to tighten up.

   It’s been in a month now, and seems to be working just fine.

   A note when measuring to cut the original wiring: be sure to mark where all of the ties and clips are, where the harness is attached along its length. If you put the splices where the wiring should be bending, or at a clip, it may not bend smoothly.

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2. W. Prince "wprince2" says

   January 1, 2015 at 3:36 am
   27 of 32 people found the following review helpful

   
   Didn’t work for me, May 29, 2011

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   W. Prince “wprince2” (Kennesaw, GA United States) –
   
     

   Verified Purchase(What’s this?)

   This review is from: Denso 234-4209 Oxygen Sensor (Automotive)

   I bought this universal oxygen sensor to replace the rear one that was mounted on the catalytic converter on my 2000 Honda Civic Si. I bought the universal to save about $70 or so over the “exact fit” replacement. But looking back on it now, I wish I had just spent the extra money for the “exact fit” version. To use this universal unit, you must reuse the electrical connector (leaving a length of wire attached) from you old sensor. It comes with crimp connectors so that you can splice the wires together, but I didn’t have a wire crimping tool, so I soldered the wires together with a 25 watt iron utilizing the solder holes found on the crimping connectors. Everything appeared to look good, but after installation the new sensor was reporting a constant 1.28 volts and my car’s computer threw a code P0138 (too high a voltage). I’m ASSUMING that the heat from my soldering job caused a short somewhere in the sensor itself or in the old connector. Of course I cannot return the sensor back to Amazon and I needed my car now, so I purchased an “exact fit” Bosch unit, from my local auto parts store, and it works perfectly.
   Based from my experience and money and time lost, my caveat if you buy one of these is to crimp (as instructed) and don’t solder the wires together. Or buy the “exact fit” unit for the extra $70 or so. I did install another Denso oxygen sensor, an “exact fit” (no crimping) unit to replace the front unit, and that one works fine. Also, the Bosch sensor seems to perform well too even though it does not look exactly like the Denso (Honda OEM) part it replaced.

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