Tutorial: Change 2004 Honda Civic Downstream O2 Sensor

Learn how to change the downstream (after the catalytic converter) O2 sensor.  My Civic Ex was throwing check engine code P0420, which prompted this install.  I was able to figure out that it was the O2 sensor rather than the actual cat because the CEL intermittently was coming on and off over about a weeks time.  Like I said in my other Air/Fuel/O2 sensor video, Denso parts are cheaper than OEM, but they are basically OEM since Denso makes many parts for Honda's straight from the factory.

Honda part
36532-PLR-A11

Denso part
234-4220

Tutorial: Replace 2004 Honda Civic Cam Position Sensor

Learn how to replace the cam position sensor on a 2004 Honda Civic EX.  If you have a check engine light on and the car keeps going into limp mode, this could be your problem.  I was throwing both a code P0340 and P0344.  This did the trick, car runs perfect now!  This install is very difficult on the EX due to the ABS modulator, so be prepared.  If you have a DX or LX, this install will be easy to moderate.  This install will work on any 2001-2005 Civic.

Honda genuine part
37840-RJH-006

Tutorial: Replace 2004 Honda Civic EX Air Fuel Sensor / O2 Sensor

Learn how to change the air fuel sensor in a 2004 Honda Civic EX.  This tutorial is only for the 04-05 Civic EX/Si models.  All other 7th gen Civic models  are similar, but not exactly the same.  If you live in a state where they do smog checks, this will affect you.  I didn't pass smog the first time because of this code, but once I changed out the sensor, the car passed with flying colors!

Here's the code I was throwing below:
P0134 Honda - Air/Fuel Ratio Sensor Bank 1, Sensor 1 Heater System Malfunction

Below is the code for all other Civic models, same thing, just says O2 sensor instead of Air Fuel sensor.
P0134 (O2 sensor circuit no activity detected (bank1, sensor1)

Genuine Honda part
36531-plr-003
http://www.hondapartsbestprice.com/oe-honda/36531plr003

Denso model I bought (OEM part)
234-9017
http://www.amazon.com/Denso-234-9017-Fuel-Ratio-Sensor/dp/B00122EENE/ref=au_as_r?_encoding=UTF8&Make=Honda%7C59&Model=Civic%7C752&Year=2004%7C2004&ie=UTF8&n=15684181&newVehicle=1&s=automotive&vehicleId=1&vehicleType=automotive