2007 Pathfinder sensor issue

A forum for the legendary Nissan Pathfinder and Infiniti QX4.
Joe29
Posts: 2
Joined: Mon May 25, 2020 9:38 am
Car: 2007 Pathfinder

Post

Hello,
I have a 2007 Pathfinder with 179k miles on it and am seeking some advice. Recently, I had an error code pop up, don't remember the exact one, but it essentially said that I have a vacuum leak. So I checked the hoses and found a large hole in the air intake hose. I replaced the hoses and all is fine. A day or two go by and I get another error code, this time the camshaft position sensor says that it's bad, so I change that. Another day or two go by and I receive codes P0133 ans P0130. I didn't change these right away and came across an article that said to try resetting something on the ECM by disconnecting the wired from the Mass Airflow sensor, and turn the key on but don't start the car. I did this and then reset or erased, the codes. Everything was good for a few days. The, the CES light comes on again, this time it says that the air intake temp sensor,P0113, and P0130(O2 sensor) are at fault. I guess the other O2 sensor fixed itself? My question is, is it possible that all of these sensors are failing at once or could something else be causing all of these faults?The truck is running great, not showing any of the symptoms that these sensors would be causing if they were bad. Money is extremely tight right now, so I have been doing these repairs myself to save money. Any suggestions would be greatly appreciated. I don't want to keep changing sensors as there may be nothing wrong with them, since the original fault was so simple. Thank you for your time.
Joe


User avatar
mdmellott
Posts: 1269
Joined: Mon Sep 02, 2019 3:32 pm
Car: '13 Kia Soul+ 2.0L AT
'02 Pathfinder SE 3.5L AT P/4WD
Location: SF Bay Area, CA

Post

All the trouble codes you indicated are circuit issues. It's not likely you have actual component failures happening at the same time. It is more likely you have a short circuit somewhere in the system which is causing erratic voltage signals to the ECM. The two O2 sensor trouble codes you indicate are related to the pre-converter, right bank (passenger side) O2 sensor. I'd start by looking at and cleaning the connector for that one and be sure it has not gotten wet at the contacts in the connector. I don't know how the wiring schematic is laid out to know if the air intake temp sensor and camshaft position sensor faults could possibly be triggered by the same circuit fault as that O2 sensor but I do know you will be chasing gremlins until you find the fault. Just like gremlins, if you add water to an electrical circuit, the faults will multiply.

Joe29
Posts: 2
Joined: Mon May 25, 2020 9:38 am
Car: 2007 Pathfinder

Post

Thank you for the suggestion, mdmellott. I will start checking connections.


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