|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 .
|05-19-2013 09:53 AM|
|OverkillYJ||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.|
|05-19-2013 12:17 AM|
|05-05-2013 07:52 PM|
|05-05-2013 06:01 PM|
|05-05-2013 01:31 PM|
|05-04-2013 11:19 PM|
|redneckbrat||Change your O2 sensor. I had the same codes, Check engine light went off. Still waiting for the Maint Req light to go out.|
|05-04-2013 08:07 PM|
|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
|05-02-2013 10:37 PM|
|wrangleryj90||I have the same problem with mine I am not throwing a code tho|
|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.