2024年9月27日 · I have a 2012 frontier 4.0, with a recurring code P2A03. I have replaced the A/F sensor re A/I and the O2 S1B2, also I have done a relearn on the A/F sensor. But the truck keeps coming back with the same code I had replaced the O2- S1B2 sensor twice, and the light goes away but a moth later it...

2010年10月14日 · This is the second time this code has popped up in a week. The first time I went out and purchased a new oxygen sensor (Bank 2 Sensor 1) and replaced it. Approximately 200 miles later my car is throwing the same code. I searched this site and didn't see any threads with this in the title yet...

2010年7月11日 · I've had this code pop up alot in the last month or so. Scan Gauge says the first O2 sensor (pre cat) on Bank 2 is open. I changed the O2 sensor with an NTK replacement 2 weeks ago, after 1 day the light is back on again. Baffled, I took the truck to a reputable shop for a full diagnostic, they...

2020年10月9日 · My truck recently threw the codes p2a03 pe, p2a03 pd, and p2a03. About 6 months ago one of my cats went bad and my mechanic cut It out, no codes were given un till recently. The first time these codes popped up was when i drove the truck for about two hours straight on the highway. I cleared the...

2011年1月14日 · Hey guys, Getting the dreaded P2a03 and I am on sensor # 2, had P2a00 a few weeks before which hasn't popped up since. Cleaned my MAF sensor, cleaned air filter replaced all gaskets and had my manifolds replaced, still haven't checked how tight the manifold bolts are but no visual or audible...

2023年11月22日 · Recently, I've been having a very annoying P2A03 (O2S 2/1 Rng/Perform) code pop up roughly every 30-40 miles. The engine is running fine, the gas mileage just tanks while the dreaded SES light is on. After a bit of poking around on the forums here, I thought it might have been an exhaust leak...

2009年6月3日 · I read the CEL with a code reader and came up with P2A03, generic for O2 Sensors. So I took the truck to a German Nissan Dealer for the CEL light for the second time this month for the same code. They kept telling me that the O2 sensor is bad, Sensor 2, Bank 2 (right side, after the CAT). He...

2017年1月14日 · My 2006 frontier 4.0 is throwing a P2A03 and I could use some help troubleshooting.. I have a Bluetooth ODB reader and several apps on my phone to observe the codes as well as look at real time ECU data..So P2A03 is …

2014年8月16日 · Ok been going rounds with my truck. Have to get it thru emissions within the next few days and been chasing down this bug. I have the p2a03 code for 02 sensor out of range. Bank 1 sensor 1.. Checked it on my scanner and that 02 is reading low and not cycling. It does respond to throttle...

2016年10月26日 · That's a lean indication, so check for air leaks on the intake and especially exhaust system leaks, possibly leaking exhaust manifold gasket. I assume you mean exhaust manifolds were replaced... if the manifold bolts weren't retorqued after some miles (usually 100 or so), then they could have loosened up a bit (suggest taking it back to where you had the manifolds installed and have them check ...