new throttle body still want idle over 2500 r so on 2004 nissan sentra 1,8

Question

put different pedal assy shows code 2128 and 2138  will crank idle till warm and then surges and still want go over 2500 and sometimes uo 3200   I can un plug TB and still will throttle up the same way  any help?

Answer 1

P2128 and P2138 will put the  idle in limp mode, Try this check the ground connection, just as recommended when this code is set loosen and retighten the connection