The catalytic converter has two oxygen sensors. If sensor 2 fluctuates with sensor 1 then there is most likely problem with the catalytic converter and it will need to be replaced. You should not hear any rattling inside a monolithic converter. If it failed at high mileage 200K+ miles, time has simply finished your converter off, and will be solved simply by replacing the old one with a new one. The top waveform above, Bank 1 Sensor 1, is the oxygen sensor upstream to the catalytic converter. When you start looking at the O2 sensors, they are… Oxygen Sensor There are actually 4 O2 sensors on your truck.
On a 4 cyl engine, there are only a total of two such sensors, the one in front of the catalytic converter is the O2 sensor, the one behind the cat is the catalyst monitor. I've been running the magnaflows for a couple weeks now and they're doing great. Only the front 2 are considered oxygen sensors. If the downstream oxygen sensor is working properly, and there isn't an issue with the catalytic converter, its readings should remain steady. But too much sulfur in a batch of bad gasoline can create a rotten egg odor in the exhaust and cause the converter to light off at a higher than normal temperature, increasing pollution and possibly damaging the converter. Over a year ago I started this website to help my friends and family find the best aftermarket for their cars and trucks. A mechanic will need to use a diagnostic tool to read the code and pinpoint the exact cause of the problem.
If it is empty and hollow, your cats are gone. When the oxygen content in the exhaust is low, it produces a low voltage signal, lower than 0. I want to eliminate the 02 sensors. Lately I've been noticing my fuel mileage has been crap so I decided to look into it. Also, visual inspection never hurt anyone.
Does your app allow you to see the data stream in real time? If you look inside the wheel wells behind the fender liner, right about where the frame is one O2 sensor, the other is underneath the truck about half way back in relation to the transmission. It's best to see and work on from drivers side fender. Testimonials I love the look of the program. However, if the vehicle is left in error without addressing the problem, serious damage could occur to other components. The other two sensors are before and after the bank 1 converter, which is farther back than tbe bank 1 converter.
If the converter has failed because of contamination, the oxygen sensors should also be checked because they may be contaminated, too. If the vacuum reading drops and the engine stalls, the converter may be plugged. Sensor 1 and Sensor 2 are also called the upstream and downstream catalyst sensors, respectively. Contaminants When other reactive substances find their way into the exhaust, they can cause problems with the catalyst inside the converter. Just stopped by my mechanics shop, he doesnt think there is a leak as he said it would be easy to hear. Converter Problems Okay, so what have we learned? Once you have triggered a it is likely that your O2 sensors will have carbon buildup and may not be reading correctly. If you don't a good O2 signal and closed loop, the converter can't operate at peak efficiency.
A new O2 sensor won't cost much. Bank 1 is which ever side has cylinder 1. All you need to do is pour in a 16-ounce bottle into your gas tank and drive until the tank is almost empty. Looking forward to hearing from our more knowledgeable members! I've had this code for the last two days as well, and was literally about to start a new thread when yours popped up. But we also have to say this. If you wanna take the easy way out.
If you can't see through the honeycomb, the converter is obstructed and needs to be replaced. Sensor 1 is always before the catalytic converter. Until recently I have just been resetting the light using the Torque App on my phone with a bluetooth adapter. If I remember right I've read that 05 and 06 years had some cat problems. Nitro over complication: And here our Nitro does something extra.
Instead of swapping sensors, disconnect the exhaust pipe right after the cats and have a look up in there toward the engine, not toward the back of the truck. They contain zirconium or titania and two different plates. Common mistakes when diagnosing the P0420 code: The most common mistake is replacing the oxygen sensors before completing the diagnostic process. Aug 08, 2017 Here is the low-down on oxygen sensors, and their location designations explained: Oxygen sensors are screwed into the exhaust system at various points. While not fool-proof, catalytic converter cleaner will help remove any carbon buildup in the exhaust system that may be causing your error codes. The electrical signal from your 'cat monitor' is out of range. A smog check will cost a little more unless you have a nice mechanic near by but only a check will tell you for sure if your cat is working.