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mrjaydeeone 04-14-2010 06:12 PM

P0051 trouble code on 04 GC **RESOLVED**
Driving to work before my CEL came on. I got to work and I checked it and I got code P0051 showed in the odometer.
I searched the code and got this result.

A P0051 DTC (diagnostic) refers to the O2 sensor (sensor) located on Bank 2 in front of the catalytic converter. There is also an oxygen sensor behind the converter which is Sensor #2.

Do I need to rush to get this looked at? I am due for an oil change in 1100 miles, I figured I would wait until then. I am also going to clear the code out tomorrow and see if it comes back.

mrjaydeeone 05-13-2010 01:12 AM

Re: P0051 trouble code on 04 GC
got this taken care of the other day. Just an FYI, aftermarket sensor didn't work. CEL came right back. Replaced with OEM and all is good

DJ BoNiOmArIo 05-13-2010 01:21 AM

Re: P0051 trouble code on 04 GC
glad to know it's all in good condition

Scottina06 05-13-2010 03:03 AM

Re: P0051 trouble code on 04 GC
always get the oem's....for some reason the aftermarkets have problems

mrjaydeeone 05-13-2010 03:25 AM

Re: P0051 trouble code on 04 GC
the more you know LOL. And what's even better is I got the OEM one for less then the aftermarket one cost. Next step is returning the aftermarket one, after the company tried to give me a hard time not understanding why the CEL came back and why the code was the same for their new O2 sensor, vs the one that was removed from my jeep

mrjaydeeone 08-01-2010 05:36 PM

Re: P0051 trouble code on 04 GC
So I got a cel the other day. P1281. Thermostat. I replaced that a few weeks back, with non OEM, guess that was the issue. I have an OEM one on the way from Kolak. I cleared the CEL out yesterday AM, and within 10 miles it came back on. I checked it this AM it was P0051. O2 sensor Bank 2, sensor 1. I replaced that one like 3 months ago, with an OEM. I know the thermostat is still an issue as the engine temp isn't going high enough. But now I am trying to figure out why the 02 sensor needs to be replaced again. I cleared it this AM again, and when I started up this afternoon, CEL on, code P0051 again.

mrjaydeeone 08-12-2010 01:27 AM

Re: P0051 trouble code on 04 GC
well had mechanic install OEM Tstat today and that problem is solved. Engine temp is now where it needs to be. On to the 02 sensors. I was mistaken, the code I was throwing was P0031 Bank 1 Sensor 1. That is no longer the case. This AM before I started the jeep I checked the code and its P0051 Bank 2 Sensor 1. Mechanic didn't think the sensor should need to be replaced again. Each time the code was cleared out immediately up start up it came back. Mechanic started testing and came up with no resistance at the resistor. He didn't have enough time today. Said to bring it back he will need atleast half a day to test wires coming out of the ECU. He told me also to just keep driving it and maybe it will straighten itself out on it's own.
Anyone have any insight?

mrjaydeeone 08-19-2010 01:13 AM

Re: P0051 trouble code on 04 GC
anyone have any ideas about this. Perhaps the right direction for my mechanic to look in?

mrjaydeeone 08-24-2010 05:59 PM

Re: P0051 trouble code on 04 GC
dropping off at mechanic in the AM. Hopefully it will be an easy resolution. Wish me Luck.

mrjaydeeone 08-25-2010 03:00 PM

Re: P0051 trouble code on 04 GC
issue resolved
a cluster of wires that runs behind the engine along the firewall was rubbing against a bolt, as I am hearing is a common problem. Mechanic taped up the wires and tied them up away from the bolt. How nice it is to not be driving around with a CEL :)

DJ BoNiOmArIo 08-25-2010 03:50 PM

Re: P0051 trouble code on 04 GC
nice dude glad to know it's all good now

rableo 11-03-2010 06:59 AM

Re: P0051 trouble code on 04 GC
I am having the same code p0051. i replaced the o2 sensor with an after market one and the code came back. I just drove it like that for a while since I was not getting bad gas mileage or any thing and just thought it was a short. I just recently replaced the O2 sensor with a Mopar one and I am getting the same code. Anyone have any suggestions on how to find the short?

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