how do you wire up a 4 wire o2 sensor
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how do you wire up a 4 wire o2 sensor
Ok i finally got another o2 sensor. This new sensor has a purple, white, grey, and black wire. The original sensor has 2 black wires, 1 blue and 1 white. What wire goes where? it did not come with instructions.
Also i scanned the dtcs before i did anything and catalyst effeciecy bank 1 was found, i believe the code was p0420. What does this mean? The threads on the bank 1 downstream sensor i'm changing got messed up when i was pulling it out. I was able to file down some of the threads and put it back in tight but after a few miles of driving my CEL came on. I'm just curious because my Gas mileage has dropped a little.
Also i scanned the dtcs before i did anything and catalyst effeciecy bank 1 was found, i believe the code was p0420. What does this mean? The threads on the bank 1 downstream sensor i'm changing got messed up when i was pulling it out. I was able to file down some of the threads and put it back in tight but after a few miles of driving my CEL came on. I'm just curious because my Gas mileage has dropped a little.
Last edited by badblackram06; 05-11-2010 at 01:45 PM.
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It is a Delphi sensor from ebay. I checked everywhere for a plug in kind but all they had was universal types and nothing under 49 bucks. I found out what the new sensor wires mean. Thanks joe for the diagram. exactly what i was looking for. I got a question though the diagram for the delphi sensor shows 2 heater wires. I hooked one to the heater control then one to the return. I put it in and it throws a code for 1/2 heater circuit high
Last edited by badblackram06; 05-11-2010 at 04:24 PM.
#6
By using joehemi's o2 sensor plug diagram what wire hooks to wire 1 and 3? The new sensor says it has 2 heater wires. Does it matter what heater wire goes to the factory plug? I know one at least goes to the heater control but what does the o2 return (down) mean? if i had known this was going to be a headache then i would have just found a factory sensor with the plug already on it.