Where is the location of the wiring harness or color of the wire that runs the oxygen sensor on a 04 Saturn?
Buy a Haynes or Chiltons Manual. They have wiring diagrams in the back with wire colors listed.
P0133 Means the Bank1 Sensor 1 oxygen sensor is not communicating correctly with the computer, weather the sensor is failing, or there is an issue with the wire/connection from the main harness to the the sensor lead itself. usually replacing the oxygen sensor (this one is located just off the engine in the exhaust manifold) will resolve the issue.
Caution:On models equipped with Delco-Loc 2 or Theftlock audio systems make sure you have activation code or lockout feature is turned off * Disconnect the negative battery cable * For access to the downstream oxygen sensor raise the vehicle and place it on jackstands * Follow the harness from the sensor to the electrical connector then unplug the electrical connector from the vehicle harness * Carefully unscrew the sensor from the exhaust manifold
If you are replacing an O2 sensor with a new one, unplug the sensor from the vehicle wire harness, cut the wires off at the sensor, slip a 7/8" box wrench over the sensor and remove the sensor counterclockwise, install new sensor using a 7/8" open end wrench, tighten it as you would a spark plug, reconnect the sensor back into the vehicle harness, done.
I replaced the ozygen sensor on a 1995 Civic VX (Hatchback). The part (the oxygen sensor) is rather expensive at more than $300, but easily removed and replaced. Once you have the new part, open the hood and look for a couple of wires coming out of the center of a silver bar (the header). These wires should connect the oxygen sensor to a wiring harness. Disconnect the harness and start the car to see…