Po420 nissan sentra

A three way catalyst manifold with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2. As oxygen storage capacity decreases, po420 nissan sentra, the heated oxygen sensor 2 switching frequency will increase. Three way catalyst manifold does not have enough oxygen storage capacity.

Hello, I need some advice for an issue I have been dealing with for the past year with my nissan sentra. I got it scanned the code P was retrieved. I replaced the MAF sensor with hitachi brand however the light came back on I thought maybe I purchased a faulty one so I went and got it replaced with a new hitachi MAF sensor but the light still came on after a few hours. The next morning my check engine light came back on and I took it back to the dealership. Many times my car would stall and I would have to press the gas enable for the engine to stay on. I took my car to different mechanics and I have been led in circles. Starter was good brand and new battery so those are canceled out.

Po420 nissan sentra

Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. I've had this light on and off for the past 4 months or so. I've done some reading on this code, and it sounds like it could be the catalytic converter. I am a complete Newbie when it comes to maintaining cars. What steps do you all recommend I take? Should I start by replacing the O2 sensor? Sort by Oldest first Oldest first Newest first Most reactions. There is a warranty period for converters maybe up to 10 years. Check your specific case. Is there a specific test that I need to run? Also, you mention a 10 year warranty on the cat converters. Is that capped by mileage?

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Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. I currently have been having these issues and wanted to here if y'all had any ideas.

This page is meant to help you troubleshoot the Nissan Sentra P trouble code. A failing oxygen sensor or bad catalytic converter are the most common causes of P Catalyst system efficiency is the percentage of these chemicals removed from the exhaust system. Oxygen sensors measure these pollutants. When the readings from the upstream and downstream oxygen sensors show similar readings not enough pollutants expelled from the exhaust , your car will throw the service engine soon light P This can happen for three reasons:. You can ignore this section if your Sentra has an inline engine or if the exhaust manifolds merge into one pipe before the catalytic converter. Typically, the first cylinder is closer to the front of the engine. The bank 2 version of this code is P

Po420 nissan sentra

P is usually related to the catalytic converter and other more serious repairs. For this reason, we recommend not driving your car until the P code is resolved. Some related repairs can be done DIY but the more serious repairs listed below should be done by a mechanic. Advertiser Disclosure. P means the catalytic converter is not efficiently removing pollutants from the exhaust. Read more about how catalytic converter problems can hurt your engine here. Yes, it is usually alright to continue driving in the short term with P It does not pose a risk to the driver. Driving long term with this code can damage your engine and exhaust system. This is because your exhaust system is not working at peak efficiency.

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Sort by Oldest first Oldest first Newest first Most reactions. I don't want to put a lot of money into the repair because frankly, the car isn't worth that much. Performance shouldn't be lost either. Basically this means that the oxygen sensor downstream after the catalytic converter on bank 1 is detecting that the converter is not working as efficiently as it should be according to specs. AVS Forum. Log in. May not be much , but better than nothing. For diaging the cylinder 2 misfire, swap coils with another cylinder. I contacted a former employee, who now works for Nissan engineering, and had him search this issue. Nissan Z Forum. Hello, I need some advice for an issue I have been dealing with for the past year with my nissan sentra. I got it scanned the code P was retrieved. I have read that there are several possible causes. Please consider creating a new thread. Had no worries for about a week.

If you own a Nissan Sentra and your diagnostic tool flashes the P code, it indicates a problem with the catalyst system efficiency below the threshold for Bank 1. This can be concerning, but with the right approach, you can diagnose and fix the issue.

It's worth a thousand words. How to access brake tail light to change Nissan Sentra 2. Tell us some more! Disconnect all ignition coil harness connectors. Now I just have some bad O2 sensors perhaps? I took it to the Oreily shop next to my home, for a 2nd opinion scan. Include an image. That's my best guess, but I'd rather be Lucky than good and day. May not be much , but better than nothing. My question is, how do I find out which Cat needs to be replaced? Top Contributors this Month View All. How many miles are on it?