throttle positioning senser

destinysdad2003 · #1 12-31-2007, 01:21 AM

hi all im sure this has been asked before but I cant find any posts for it. I have had these 3 codes before in the last 4 weeks 4 times now:[*]
P0121-Throttle Position Sensor voltage does not agree with MAP sensor [*]
P0122-Throttle Position Sensor voltage low input [*]
P0123-Throttle Position Sensor voltage high input

I have had my van tested 3 times and I was told that the inputs and outputs were fineand it has always come back as a bad TPS and it has been replaced 4 times, the most resent one that has been replaced was ordered by the dodge dealership. my van will stall and the RPM gauge will go speradic and rev hi and low and then sometimes die, or trie to die. The check engine light does come on but mostly before it fails and stalls. the last time it stalled yesturday it did it before the light came on and I did disconnect the battery for 15 mins and reconnected it, when I did that nothing else happened and it ran fine.I am wondering if this could be a computer problem or a wiring problem like if something is grounding out and it is causing the TPS to go bad?? any advise would be very helpfull as im not to mechanicly inclined and cant afford to keep putting it into the shop to fix.

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Dodge Tech · #2 12-31-2007, 11:41 AM

U have a wire issue take it to some one that knows what they are doing as far as electrical.

destinysdad2003 · #3 12-31-2007, 01:59 PM

that could be anything in the wiring though right??

Dodge Tech · #4 12-31-2007, 02:09 PM

short to ground on the 3 circuits for the TPS the 5volt supply the return signal and the ground.
broken wire pinched wire.

destinysdad2003 · #5 12-31-2007, 02:43 PM

hmmmm ok ill have to look. if its a short in the ground ot any of those u mentioned, is it easy to repair???

Rick99 · #6 01-01-2008, 08:49 AM

It should be easy to repair once you find it. If the conductors (metal part of the wires) are in good shape, just tape them up well. If the conductors are damaged, cut, splice, solder and tape/shrink tube.

Finding it is the trick.

destinysdad2003 · #7 01-03-2008, 09:36 PM

kinda weird but ive driven my van more this week then I have in the last 3 weeks, and it is running normal, im confused now lol