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Po121. Op121. D.c.t code Which 1 for dodge ram throttle body sensor

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Posted on Jan 02, 2017

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SOURCE: 1999 volkswagen stalled

first check cylinder 1 , spark plug, ht leads, coil,

then clean the trottle body with carb cleaner

if that does not work replace the throttle body, comes complete, and do a basic setting on it with diagnostic machine

Posted on Feb 19, 2009

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SOURCE: Where is the throttle position sensor at on a 2005

THIS ENGINE HAS ELECTRONIC THROTTLE CONTROL..THERE ARE 2 THROTTLE POSITION SENSORS LOCATED IN THE THROTTLE BODY,COMPLETE ASSEMBLY MUST BE REPLACED IF DEFECTIVE..IT ALSO HAS SENSORS IN THROTTLE PEDAL ASSEMBLY AS WELL..WHAT TROUBLE ARE YOU HAVING?

Posted on Jul 09, 2009

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SOURCE: Where is the throttle position sensor on a

Lightning bolt on dash starts blinking and the freakin truck shuts off on the highway in the center lane. Real nice Dodge. Nice way to kill someone. Any body have aclue what happens to the fbw.

Posted on Oct 15, 2009

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SOURCE: on a 04 camry with 2.4 ltr engine, can I replace

I think the terms "Throttle Positon Sensor", TPS and "Throttle Body" can be misleading at least in regards to the 04 Camry.

My 04 Camry gave a diagnostic reading of P2121 for my problem "Throttle PEDAL position switch D circuit". However, we changed out the complete Throttle Body/TPS (Toyota Part #22030-0H020) that did NOT fix problem.

The 04 Camry TPS Electronic Module "Throttle Positon Sensor" is factory assembled and riveted to the side of the throttle body. The only way to service/inspect it would be to cut off or drill out the rivets. Not sure you could open the darn thing if you got it off, but that seems to be the only way Toyota sells them!!

Hopefully a new Throttle PEDAL Position Sensor (Toyota Part # 78010-33010 PEDAL ASSY, ACC)
will fix it. This is located under the dash near the accelerator pedal.

So, now I would recommend FIRST to replace the "Throttle PEDAL Positon Sensor" (it is much, much cheaper) and then the Throttle Body/TPS assembly!! Unless of course, you get a diagnostic code as you did for "faulty throttle body!!


Posted on Jan 21, 2010

  • 18 Answers

SOURCE: Throttle/Pedal Position Sensor/Switch

typical problem, replace the TPS (Throttle Position Sensor) it is located directly opposite of the throttle cables on the throttle body. 2 bolts save the bolts for the love of god SAVE THE BOLTS they are "trilobal" and come verry much in handy later. but it is an easy 10 minute fix and if my memory is correct they are torx head bolts from factory.

Posted on Mar 16, 2010

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Were the APP codes there BEFORE they replaced the BCM? APP codes usually are an indicator the throttle body needs to be replaced. As a precaution, some recommend to replace the throttle body AND the sensor on the gas pedal together. Unfortunately, this is a dealer only repair most o the time, since the ECM will have to be flashed to sync the new sensors.

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2000 dodge ram TCS been replaced still get code p0505


Code 505 is for a problem with the idle air control valve.
It could be the valve, or a dirty throttle body, or a problem in the harness.
If you replaced the IAC and the throttle body is clean, and the code remains, you probably need to open the harness and check the wires.

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Throttel postion sensors


needs the throttle body cleaned and Idle Air Control solenoid either cleaned or replaced, would have the Throttle Position Sensor looked at also when the TB is cleaned.

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PO121 code still on, replaced o2 sensors, replaced cracked air tube, put seafoam in gas. reset computer, light came back on after 40 miles. same codes. DIAGNOSTIC TROUBLE CODES PO171 System Too Lean...


PO121 : TP Sensor Performance = The PCM supplies 5V to the TP sensor(throttle position). The TP sensor is a variable resistor that drops the voltage to about 4 volts at WOT(wide open throttle) to less than 1 volt at closed throttle. Some TP sensors are adjustable. others have a learn procedure to determine closed throttle. PO171 Fuel Trim System Lean = In closed loop the PCM adjusts fuel delivery based on H2OS 1 readings and is indicated by long & short fuel trim values. If lean the PCM will add fuel (fuel trim above 0%) & if rich the PCM will reduce fuel(fuel trim below 0%) PO128 ECT Below Thermostat Regulating Temperature = possible failed thermostat, low or empty on coolant, Engine Coolant Temp Sensor, Poor connection/Harness/Wires, faulty PCM Connection. I think you hit the nail on the head , the ECT Sensor ( which is different than the temp sensor for the dash gauge)

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2002 Dodge Ram 1500 5.9 liter GAS not Diesel, giving code of p1391 which means cam/crank sensor - we have changed crank sensor and it's running worse - we have to start it about 3 times before it will quit...


most likely its the throttle body sludged up . clean the throttle body and butterfly . this will only help if there is an idling problem . ck for codes and ck freeze frame data for more help

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The "engine power is reduced" light comes on


po455 is Probable Cause[s]

1. Defective, loose or missing fuel cap
2. EVAP canister broke, hose cracked or not connected
3. Purge or vent solenoid defective
4 . Vacuum leak at engine po121 code po121 means Throttle Position Sensor/Switch A Circuit Range/Performance Problem . it is usually indicative of a faulty throttle position sensor or faulty wiring harness in the engine bay.

Feb 27, 2010 | 2006 Chevrolet Impala

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My etc light is flashing on and off


The throttle position sensor should be located on the side of the throttle body or on the fuel injection pump. If it is one of the models on the throttle body it will be attached at the end of the throttle shaft. If the engine is setting code 24 and idles erratically that is the problem. If it is setting a different code tps is not the problem

Feb 03, 2010 | 2003 Dodge Ram Maxi

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Getting the following codes from a 1997 Pontiac Grand Am....... PO121 TPS / Pedal Position Sensor A CKT Range / Perf Also, PO341 Camshaft Position Sensor A - Bank 1 CKT Range/Perf. Any thoughts on the


po121 means that there is a problem with the throttle position sensor ( tps). or in the wiring or connector, most likely its the tps that is bad. first remove connection from tps, heres how to test. use an ohms meter and hook a lead to top or bottom terminal of tps. use other probe on center terminal of tps. move throttle plate slowly, if the needle on meter does not move at a smooth pace, then tps is bad. good-luck!!

Apr 27, 2009 | 1997 Pontiac Grand Am

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