96_xj

alright so almost always in the middle of four wheeling(only time this happens) i get a check engine light, i drive it home and park it and it starts up with no light-always happens like this. So this time i decided to get the codes checked out, of course i turn it off, walk into the store and ask for a check engine light test and he goes out to check it, but there is no light so he argues that they can not check it with out the light on, so after i get him to try it he pulls up 3 stored codes...


The codes go as follows:

P1493:
Ambient or battery temperature sensor voltage wrong

P0203:
Injector #3 control circuit problem (open or shorted)

P0123:
Throttle position sensor voltage high



have any of you ever had these codes? and if so what did you do to fix them (i am going to search for the 203 code since i know many have had it....)





INFO:
96 4.0HO, ax-15, np 231, upgraded ignition, upgraded reman injectors(have the Ev6 style injector rather than the Ev1) full tune up: 2/0 battery cable to everything and grounds, cap/rotor, wires, plugs, all filters and new oil on last tune up and new oil and filter in the last 1000 miles, took off and cleaned TB, sea foamed engine. the whole 9 yards.

It runs perfectly fine, almost no knock for having 172XXX idles smooth and at the right RPM range, no problems with anything and everything looks good, not even an oil leak! ALT tests fine, battery tests fine, (all heavy duty upgrades-even the started is rated to 1000watts...)


however like stated above, i only get these about an hour into wheeling.... and they go off when i park the jeep for a bit....

96_xj

alright so according to the Autozone print outs and doing a bit of research the P0203 code is being tripped due to the P0123 code. A faulty TPS code can throw the Cylinder 3 code... is that right?

96_xj

bump