Sometimes it is not the sensor or module that is bad. It may be a wire that is bad on that sensor/module circuit so just replacing any sensor/module, scan again for codes and see if the related code is still there or came back and if the sensor/module was already replaced, then 99% of the time it is a wire that is bad, or a loose connection or rust inside the insulation of a wire or a loose rusted ground.
Let me know what codes you have after a ten minute test drive and if the engine stalls, stumbles, lacks power, etc, and the readings from all testers that you can get your hands on like I mentioned before.
You can check if even that ground cable is bad by checking the voltage drop on both ends.
To do so, hook the negative voltmeter test lead to the negative battery post and the positive voltmeter test lead on the end of that ground where is bolts to G111 and make sure the test lead touches the exposed copper wire strands or the connection on the end of that cable, in other words not the attaching nut or bolt. Now, start the engine and read the voltmeter, it should read 0.1 volts or less. If it reads anything, that is the amount of voltage drop across that ground circuit from that spot where the positive test lead is to the battery negative post because the voltmeter has less resistance to ground and whatever voltage that is lost across that circuit the voltmeter will pickup and display as a voltage drop.
Now move just the positive voltmeter test lead to the other end of that g111 circuit and do the test again. If that cable branches out to several parts, just find the end of that wire/cable to whichever part be it sensor or module that you still have a code for and check that ground wire/cable. So attach the positive test lead on any ground wire/cable end you want to test as close to the part as possible to recheck the ground voltage drop. It should read no more than 0.1 volts more than your other test, so 0.2 volts, anything well over that is the amount of voltage drop just on that ground wire/cable so if it reads, let's say 4 volts, you are loosing 4 volts along that cable/wire and could well be rust inside the insulation that ruined the copper wire strands or a mouse or small creature has chewed up the wire.
Sunday, June 24th, 2018 AT 7:59 AM