Just recently, the Service Engine Soon light came on. I checked the code using OBD II Code Reader and the code was
P0430 - Catalyst System Efficiency Below Threshold (Bank 2).
I didn't clear the code. I went to Autozone, and they said that I probably need to replace the passenger side O2 Sensor.
The car is running fine. No problems what so ever. About a week later, the Sevice Engine Soon light goes off. So I thought I had some bad gas or something.
I continue to drive the car, and about a week later, the Service Engine Soon light comes back on. I check the code again, and it is P0430 again.
Should I change out the 02 Sensor, or is it probably something else? Which O2 Sensors should I change? What course of action would you suggest to fix this problem.
The car recently passed emissions (about 3 months ago), so I don't really think my catalytic converter is bad......or is it?
Since my warranty is up, I'm trying to figure out the cost effective ways of fixing this problem.
Below are some details about the car. Any help or suggestions would be greatly appreciated.
Details of Car------------------------------Car: 2000 Infiniti I30tMileage: 100,600 milesLocation: Dallas, TexasMaintenance: Regular Oil Changes with Mobil 1, Always fill up with Super Unleaded Gas.
P0430 Code on 2000 Infiniti I30t
You first need to have the ECM number compared to the ones in TSB NTB 00-070. The bulliten only reffers to po420 I believe but if your ECM is one listed in current Part numbers it needs yto be updated then have a DTC comfirmation test ran to see if the cat is infact bad. If an o2 is bad its the front banks rear O2. But I say nay since it needs a properly functioning O2 to determine the cat is bad. I suspect they only replaced the other guys o2 because it was rusted into the cat pipe.
