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-   -   Error code help! (http://www.wranglerforum.com/f218/error-code-help-239861.html)

OverkillYJ 05-02-2013 10:29 PM

Error code help!
 
I have an occasional low idle and error codes 51, 21, & 14. Anyone know what would cause all three of these error codes at the same time? Jeep is driving fine. No loss of power or anything. Just 1 in ever 10 times I stop or so id idles down around 600 rms. I would replace the MAP sensor, but sine I have the two other codes at the same time I am not sure if something else may be to blame.

wrangleryj90 05-02-2013 10:37 PM

I have the same problem with mine I am not throwing a code tho

OverkillYJ 05-03-2013 09:16 AM

So this is what they mean, but what would cause this? Could it be a clogged injector alone? That would be my first though, but would that trigger any problems with the MAP sensor?

51 O2S signal stays below center (lean)
21 O2S stays at center or O2S shorted to voltage
14 MAP sensor voltage too low or too high

OverkillYJ 05-04-2013 08:07 PM

bump

redneckbrat 05-04-2013 11:19 PM

Change your O2 sensor. I had the same codes, Check engine light went off. Still waiting for the Maint Req light to go out.

Garyk 05-05-2013 01:31 PM

Quote:

Originally Posted by redneckbrat (Post 3720217)
Change your O2 sensor. I had the same codes, Check engine light went off. Still waiting for the Maint Req light to go out.

Your maint light will not go off, has to reset by a dealer.

redneckbrat 05-05-2013 06:01 PM

Quote:

Originally Posted by Garyk (Post 3721627)
Your maint light will not go off, has to reset by a dealer.

That sucks.

OverkillYJ 05-05-2013 07:52 PM

Quote:

Originally Posted by redneckbrat (Post 3722261)

That sucks.

Thats wrong anyway. Will go off when fixed like every other code I have fixed.

redneckbrat 05-19-2013 12:17 AM

Quote:

Originally Posted by OverkillYJ (Post 3722643)
Thats wrong anyway. Will go off when fixed like every other code I have fixed.

It's been over 180 miles, still not off. I wonder what else I need to fix for it to go out.

OverkillYJ 05-19-2013 09:53 AM

I replaced the MAP sensor and the MAP error went away. Then I changed the O2 sensor and the other 2 errors went away. No more check engine light. Not sure about Maint Req light though. I have never seen that one. I have only seen the Brake light, seatbelt light, and check engine light.

Garyk 05-19-2013 12:48 PM

The maintenance light will come on if the o2 sensor times out. In older models this could be disconnected, in these it has to be reset.....some disconnect the maintenance required light.
CEL is different. That one will clear .


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