I want to clear code 0420, sounds like only a small chance it will address that? Forums suggest catalytic converter is more likely. O2 worth a try?
1034405
I ended up doing both O2 sensors because it was cheaper. But less than a year later my rear cat converter is done and needs changing. I have 235,000 miles on though... I passed emission a month before the P0420 code came back, then it was my cat, so... I think the sensors were bad too... hope this helps!
1034406
clearing the code doesnt fix any problem it just resets the computer. you need to see a mechanic.
1034407
What I try doing with all of my home repairs is replace the cheaper to replace items first if you cannot properly identify exactly what is wrong. Codes will point you in the right direction sort of yet vehicles are very integrated with everything affecting everything else for the most part. YOu can very easily test the voltage/resistance (Look it up online) to positively identify if your O2 sensor needs replacing.
245744
I'm not sure. Obviously your vehicle's OBD II system monitors the PCM "powertrain control module" and or TCM " transmission control module". There should be a code stored for the trouble. I would think you will be able to clear the code, but take care doing so. Depending on the type monitor in the vehicle, erasing trouble codes may also erase the "freeze frame" data and manufacture enhanced data. You may also get a "not ready or not complete status" message. You would need to go drive the vehicle for a while to reset those monitors. Have the vehicle checked first before a technician to be safe. Hope this helps. I'm not sure. Obviously your vehicle's OBD II system monitors the PCM "powertrain control module" and or TCM " transmission control module". There should be a code stored for the trouble. I would think you will be able to clear the code, but take care doing so. Depending on the type monitor in the vehicle, erasing trouble codes may also erase the "freeze frame" data and manufacture enhanced data. You may also get a "not ready or not complete status" message. You would need to go drive the vehicle for a while to reset those monitors. Have the vehicle... » Read More I'm not sure. Obviously your vehicle's OBD II system monitors the PCM "powertrain control module" and or TCM " transmission control module". There should be a code stored for the trouble. I would think you will be able to clear the code, but take care doing so. Depending on the type monitor in the vehicle, erasing trouble codes may also erase the "freeze frame" data and manufacture enhanced data. You may also get a "not ready or not complete status" message. You would need to go drive the vehicle for a while to reset those monitors. Have the vehicle checked first before a technician to be safe. Hope this helps. « Show Less
772132
Yes, it will erase the code and reset the check engine light... I usually look up the code on the internet and see if it is something i can fix myself, or if it is something that is minor and will not affect how it runs etc.. some codes require that you have them looked at, especially if it acts up or quits, stalls etc.. however if you have a service engine light, this will not work for it.
347506
Did you clean the ports with carb cleaner? You may also have additional codes coming up.
863468
Oxygen sensors generally do not really have a recommended mileage in which you replace them, they can potentially last as long as the vehicle. The main indications of a bad sensor are decreased fuel mileage as their primary function is to tell the computer how lean or rich the burnt fuel was and to monitor proper catalytic converter functioning. Your RPM surge could potentially be a bad sensor but without further diagnosis I can not say. If the sensor is bad then it will certainly bring up a code and the check engine light will come on. Be sure to check that and if you do then use a code reader or go to any auto parts store and have them check that code to see if it the oxygen sensor. Good luck. Oxygen sensors generally do not really have a recommended mileage in which you replace them, they can potentially last as long as the vehicle. The main indications of a bad sensor are decreased fuel mileage as their primary function is to tell the computer how lean or rich the burnt fuel was and to monitor proper catalytic converter functioning. Your RPM surge could potentially be a bad sensor but without further diagnosis I can not say. If the sensor is bad then it will certainly bring up a code and the check engine light will come on. Be sure to check that and if you do then use a code... » Read More Oxygen sensors generally do not really have a recommended mileage in which you replace them, they can potentially last as long as the vehicle. The main indications of a bad sensor are decreased fuel mileage as their primary function is to tell the computer how lean or rich the burnt fuel was and to monitor proper catalytic converter functioning. Your RPM surge could potentially be a bad sensor but without further diagnosis I can not say. If the sensor is bad then it will certainly bring up a code and the check engine light will come on. Be sure to check that and if you do then use a code reader or go to any auto parts store and have them check that code to see if it the oxygen sensor. Good luck. « Show Less
2268670
Hello, what cars you want to delete the code on?If it is OBDII protocol, it will work on.
819710
What do you mean by "clear errors"?--It won't fix anything on OBD system,but yes it will clear monitors and reset MIL---it will also tell you numerically and in words what the errors are--My job is emissions compliance at a huge used car dealership---we scan approx 40 cars per day to get them emission ready--this is a good machine--my emissions team uses 4 of them daily
251596
Its not wise to replace a Cat unless the exhaust system is properly checked for temperature differences between CAT and engine, then from CAT out. secondly the P0420 code is usually a oxygen sensor code sensor code in some Toyota's therefore I recommend you stop by a auto zone or advance outo or even Oriely's and have them check and confirm this code for you, its free. For the ECM it depends on wheather you want to buy it new or used, for new you can check Toyota, auto zone, advance auto, oriely's or even amazom. For used you can check a junk yards like pull apart, wrench it, and others for a used ECM. I hope I was of some help to you. Its not wise to replace a Cat unless the exhaust system is properly checked for temperature differences between CAT and engine, then from CAT out. secondly the P0420 code is usually a oxygen sensor code sensor code in some Toyota's therefore I recommend you stop by a auto zone or advance outo or even Oriely's and have them check and confirm this code for you, its free. For the ECM it depends on wheather you want to buy it new or used, for new you can check Toyota, auto zone, advance auto, oriely's or even amazom. For used you can check a junk yards like pull apart, wrench it, and others for... » Read More Its not wise to replace a Cat unless the exhaust system is properly checked for temperature differences between CAT and engine, then from CAT out. secondly the P0420 code is usually a oxygen sensor code sensor code in some Toyota's therefore I recommend you stop by a auto zone or advance outo or even Oriely's and have them check and confirm this code for you, its free. For the ECM it depends on wheather you want to buy it new or used, for new you can check Toyota, auto zone, advance auto, oriely's or even amazom. For used you can check a junk yards like pull apart, wrench it, and others for a used ECM. I hope I was of some help to you. « Show Less
1620432
No. There is a table on Walker's website that lists the features of all their converters, and tells you the ones with O2 sensor bungs.
1668772
No break in period. It's either it works or not. Sometimes it's better to change the one's before the catalyst converter and the one's after it by the exhaust
416608
I wish I had an answer for you. All I can tell you is that their cat converters are not good. It did nothing but set off my check engine light. The only cure was to replace it with a GM original equipment converter to eliminate the problem. I forced Magnaflow to pay for it including labor at a local repair shop.
906105
Yes it would but you only need to replace the rear aka downstream sensor after the catalytic converter on bank 1 to clear this code but I have found the other downstream sensor in bank 2 to fail shortly thereafter so typically replace them in pairs
245742
Yes. I was able to clear my code. I'm not sure if it will clear the O/D light, but it was able to clear my internal warning code to replace a sensor.
1417199
Hey James, I just recently(within the past month and a half) replaced my o2 on my 02 Toy Tacoma 4x4 3.4L with an automatic tranny and this exact sensor #234-4189, working great for me. I am told by my mechanic that it is the same one for the manual trans. Hope this helps dunc g
905230
No sir, go to a muffler shop, have them cut your original cat off and weld the magnaflow cat to replace the gap. That's pretty much what I did. You don't have to mess with your o2 sensor. Now the driver and passenger is a different story.
860809
Possibly, if the current catalytic converter on the vehicle is not functioning properly. This catalytic converter is not legal in California, so if you are in California, you would need a different part number than this one.
768283
Run your car hard and get the RPMs up after this treatment. If it doesnt clear up after 200miles, go to a parts store and have them clear the code.