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2003 Jeep Liberty Sport has code #P0122 & P0455

What do these codes mean-

p0122 & p0455

on my 2003 Jeep Liberty Sport 3.7?

Vehicle: 2003 Jeep Liberty Sport 4WD
asked Dec 3, 2012 by anonymous

1 Answer

Hi there,

P0122 means you have an issue with the throttle position sensor on the throttle body reading wrong. Many times replacing the sensor will resolve the problem.

P0455  means there is a vapor leak in the evap system. It's possible there is an issue with the gas cap, but in most cases a smoke test should be done to try and determine where the leak is, then the repairs be made.
answered Feb 19, 2016 by Carguy1 (4,950 points)
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