Tip & How-To about 2005 Honda Civic
Our civic was throwing a P0134 error code = "air/fuel sensor, no activity detected". These sensors are not the same as the typical "oxygen (O2) sensor" .. and cost a *lot* more. I replaced ours with the Bosch 15473. I expected the original to be corroded in but it wasn't .. the anti-seize compound did it's job. As suggested by the Haynes manual I ran the car for a couple of minutes to warm up the fitting (don't burn yourself on hot exhaust) and I had sprayed the sensor to exhaust connection with penetrating oil. Only a 7/8" (or metric equivalent?) open end wrench is required to remove the sensor ... and it is readily accessible from under the car. So unplug the old sensor, remove the dead unit, screw in the new unit (it's delivered with anti-seize on the threads) and plug it back in. I pulled the PCM fuse while doing the replacement ... replaced it when done. The "check enginge" / error code was clear and we've been good to go since.
Having a critical engine control / emissions part like this fail at less than 80k miles is a failure on Honda's part. Dealer says "no recall" and quoted $400+ for diagnosis, part & install.
I *think* this procedure will be true for the other VTEC engines of this year and perhaps 2004s but I don't believe the part spans the entire 7th generation Civic.
Posted by JeB on
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