I just replaced my o2 sensor because the CEL was giving me code 1 and the exhaust smelled rich. While replacing the sensor, I busted the radiator, letting air into the cooling system.
I have since replaced the radiator and refilled the coolant system, but was having idle issues. It turned out to be a small disconnected hose near the throttle-body. I reconected the hose, but before doing that I was disconnecting and reconnecting the EACV to adjust the idle revs with the adjuster screw.
Now that I had gotten the idle revs somewhat normal, I ran the car up to normal opperating temp, to see if the exhaust still smelled rich. It does, but on top of that, the CEL gave Code 1 again and added Code 14.
My plan of action is to clean the EACV and O2 sensor, but I would like to know why replacing the O2 sensor didn’t get rid of Code 1, and if these two codes could possibly be related. If anybody knows anything, I’d appreciate the help.

 

Check your grounds and continuity on the O2 wire. The O2 sensor grounds through the engine, so if you have a ground issue that might screw up the reading and trip the CEL.
The code 14 could simply be due to disconnecting the EACV repeatedly. I would clear the ECU and see if it comes up again.

 

I got a code 14 that wouldn't go away after unplugging the EACV, clearing the ECU got rid of it.

 

Was it a plug and play o2 sensor, or was wiring involved? If you had to wire in the sensor, make sure you didn't short the o2 signal wire to the shielding.

 

Code 14 definitely was from repeatedly plugging and unplugging the eacv, so that’s no longer an issue.
Code 1 on the other hand keeps coming back, and I’m pretty sure it’s cause the o2 sensor connector wire (the bit that’s connected to the ECU) is busted. It broke off completely when I removed the o2 sensor for cleaning, but was already disintegrating before. I soldered the pieces back together with the help of 20 gauge wire, but I’m not completely confident that the connections are secure.
Is there any way to test the wires, and does anyone know where I could get a replacement connector?

 

Just for reference, you should always replace the O2 sensor if the wiring pigtail is broken or damaged. Don't try to repair those. I think you are talking about the ECU side wire above, but just thought I would post this. You need to make sure any wiring repairs are solid because the voltage reference is very low and can easily get skewed with bad repairs.

 

Thanks for the tip, but yeah unfortunately the busted wire is on the other side of the connector, which is more of a pain to replace.

 

Did you make sure you didn't solder the conductor of the wire to the wire shielding? If you did this, it will short the o2 signal to ground and throw a code.

 

Don’t remember encountering any shielding, but then again the wire broke off right at the connector, leaving very little to work with.
Also the code only gets thrown after the engine reaches operating temp, if that narrows down the possible causes at all.