• Register
Ask OBDII Question
Please write Make, Model and Year

Find local automotive repair shops in your area | Engine-Codes.com Local
Need A Repair Shop?
Find local automotive repair shops in your area.
Engine-Codes.com Local

28,735 questions

14,879 answers


18,226 users

Top Users

Reynaldo 6,860 Points
G37driver 3,517 Points
OBDIITech 2,611 Points
Carguy1 1,520 Points
OBDtech2 165 Points
corvette-78 127 Points
knowledge 1488 124 Points
Samat Bekov 117 Points
ptl 113 Points
sabtele 112 Points

Replaced my TPS on my 02 jeep liberty but still get codes p0121 and p0123 (TPS issue). Why would this keep happening?

Automatic transmission,  new TPS is about 4 monts old.

Vehicle revs real high as if it's stuck in 2nd gear and won't go into third.  Eventually it will go into third gear and run "normal" but I can tell it still takes a while to switch into 3rd and 4th gears.  Once at speed, it runs ok.
asked Mar 18, 2011 by anonymous

1 Answer

P0123 2002 JEEP LIBERTY - Throttle Position Sensor/Accelerator Position Pedal Circuit High Input

Read more: http://engine-codes.com/p0123_2002_jeep_liberty.html

P0121 2002 JEEP LIBERTY - Throttle Position Sensor 1 Performance

Read more: http://engine-codes.com/p0121_2002_jeep_liberty.html

Both codes are for the Thorttle Position Sensor (TPS). You probably have to replaced the sensor.

answered Oct 8, 2012 by OBDIITech (2,611 points)

Related questions

Home - About Engine-Codes - Privacy Policy - Terms and Conditions - Copyright 2010-2015 Engine-Codes.com

Engine-Codes.com - HelpForCars.net - Infinitihelp.com - Nissanhelp.com