Trouble Code P1120

[murphypeople]

My MM is throwing code P1120 TPS Out Of Range Low. I did some searching on the web and here before troubling you all here.

I have no clue what this code is about what so ever. Thinking it had something to do with a "Tire Pressure Switch" I checked my tires. Don't laugh) or :flamer: but if it makes you day better, and you have good answer, feel free to do either or both:coolman: Tire pressure is 36psi all around.
((do our MMs have a tire pressure sensor?))

I do have a tune from Lidio for many months now and it has been supper great! I don't have any performance problems...just this code.

Thanks in advance.
Tony:burnout:

[RF Overlord]

TPS= Throttle Position Sensor...it's an easy fix, but I have no idea how much the sensor costs.

...and no...we don't have a tire pressure sensor, although one would have come in mighty handy when Bunny drove The Blackbird 75 miles after it had been sitting for a while and I later found 16 lbs of air in the left front. :eek:

[Blackened300a]

I just happen to have a extra TPS laying around.

[murphypeople]

So this code indicates that I need a new sensor. What does it do?

T

[murphypeople]

Found this!

Throttle position sensor

From Wikipedia, the free encyclopedia


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Jump to: navigation (http://en.wikipedia.org/wiki/Throttle_position_sensor#colum n-one), search (http://en.wikipedia.org/wiki/Throttle_position_sensor#searc hInput)
<!-- start content -->http://upload.wikimedia.org/wikipedia/commons/thumb/0/0b/Throttle_body.jpg/200px-Throttle_body.jpg (http://en.wikipedia.org/wiki/Image:Throttle_body.jpg) http://en.wikipedia.org/skins-1.5/common/images/magnify-clip.png (http://en.wikipedia.org/wiki/Image:Throttle_body.jpg)
Throttle body (http://en.wikipedia.org/wiki/Throttle_body) showing throttle position sensor on the right


A throttle position sensor (TPS) is a sensor (http://en.wikipedia.org/wiki/Sensor) used to monitor the position of the throttle (http://en.wikipedia.org/wiki/Throttle) in an internal combustion engine (http://en.wikipedia.org/wiki/Internal_combustion_engine). The sensor is usually located on the butterfly (http://en.wikipedia.org/wiki/Butterfly_valve) spindle so that it can directly monitor the position of the butterfly throttle valve.
The sensor is usually a potentiometer (http://en.wikipedia.org/wiki/Potentiometer) and therefore provides a variable resistance (http://en.wikipedia.org/wiki/Resistor) dependent upon the position of the butterfly valve (and hence throttle position).
The sensor signal is used by the Engine Control Unit (http://en.wikipedia.org/wiki/Engine_Control_Unit) (ECU) as an input to its control system. The ignition timing and fuel injection (http://en.wikipedia.org/wiki/Fuel_injection) timing (and potentially other parameters) are altered depending upon the position of the throttle, and also depending on the rate of change of that position. For example, in fuel injected engines, in order to avoid stalling, extra fuel may be injected if the throttle is opened rapidly (mimicking the accelerator pump of carburetor (http://en.wikipedia.org/wiki/Carburetor) systems).
More advanced forms of the sensor are also used, for example an extra closed throttle position sensor (CTPS) may be employed to indicate that the throttle is completely closed.
Some ECUs also control the throttle position and if that is done the position sensor is utilised in a feedback loop (http://en.wikipedia.org/wiki/Feedback_loop) to enable that control.
<!-- Saved in parser cache with key enwiki:pcache:idhash:3923516-0!1!0!default!!en!2 and timestamp 20071008100427 -->Retrieved from "http://en.wikipedia.org/wiki/Throttle_position_sensor (http://en.wikipedia.org/wiki/Throttle_position_sensor)"

How involved my the replacement be?
T

[Blackened300a]

How involved my the replacement be?
T

From start to finish you are looking at a total of 5 minutes to change one and thats including checking the voltage.

[RF Overlord]

^^^what he said^^^