Question about 2006 Land Rover Range Rover Sport

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What is the possible problem if the code present p1121 and p1120 pedal position sensor fault last occurrence-plausibility? Please give some advice...thanks

We already test part the pedal position sensor and the throttle body in same car but problen still present ..

Posted by erlou caracal on


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This is quite in depth> perhaps this video can give you the answers you are looking for:

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My 2003 chev Avalanche 2500 keeps going into limp mode Code reads throttle body even after putting new one on ????

The code may apply to other parts/assemblies/systems in addition to the throttle body.

Sep 21, 2018 | 2003 Chevrolet Avalanche

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2008 Ford Explorer V6 4x4. Code P2135. Already replaced TPS sensor, but still giving me check engine light and sometimes the yellow wrench light. Any ideas?

Did you replace the throttle body assembly ?
P2135 - Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation Description: The powertrain control module (PCM) flagged a concern indicating that throttle position (TP) 1 and TP2 disagree by more than a calibrated limit. Possible Causes:
  • TP sensor shorted internally to VREF
  • TP sensor harness is short to voltage
  • TP sensor signal wires are short together
  • Damaged TP sensor
Diagnostic Aids: Compare the TP1 and TP2 PID values for a full sweep and correlation. Refer to the chart in pinpoint test DV. GO to Pinpoint Test DV .
Check the wiring harness for an open or a short circuit. Check the TP sensor for an internal open or short circuit. If no circuit concerns are present, install a new TP sensor. Application Key On Engine Off Key On Engine Running Continuous Memory All GO to Pinpoint Test DV .
your best bet , take it to a qualified repair shop.

Aug 22, 2018 | Ford Cars & Trucks

1 Answer

Stabilitrak service comes on and i lose power. could this be the body modularsensor or throttle body sensor.

If you have a cable throttle then not likely, if you look at your throttle body and it is electronic then it could be the throttle body position sensor or possibly the accelerator pedal sensor. Are the any DTC codes present on your truck (check engine lights) cause both of these issues have sensors the will most likely trigger a code light on the dash. If not light comes on I would have it scanned just to make sure it doesn't have any codes stored in memory

Jan 02, 2014 | 2007 Chevrolet Avalanche LTZ

3 Answers

Throttle pedal position sensor "A" circuit low input

Sounds like the Throttle Plate is sticking

You were fooled into changing the TPS because of the code

Not the way you diagnose vehicle issues

You find out why a sensor--- good or bad set the code

Get some CRC Throttle Body Cleaner & follow the instructions

Don't need much sprayed around the throttle plate

Then have someone step on gas pedal to confirm success

May need the key on

Your low input is the throttle not returning to home position

Almost like the sensor was telling you what was wrong

Fun stuff isn't it & not easy to understand

Feb 03, 2013 | 2001 Ford Taurus

1 Answer

Where is the TPS sensor located,2004 Nissan Titan 5.6 v-8

The 2004 nissan titan is drive by wire, meaning there is no cable to control the gas pedal to throttle.
This system is computer controlled with a motor at throttle body and pedal sensors.

the TPS throttle position sensor is located inside the throttlebody . on most of these the complete throttle body must be replaced as there is no sperate tps sensor it is complete,
i would check and make sure this is the problem . GM started making TPS replacement sensors for there throttle bodies.

Jan 06, 2013 | Cars & Trucks

1 Answer

2003 Yukon Denali XLT lights flicker, rpm goes up and down when on park or stopped or driving and slow speeds. Sometimes it turns off. I thought it might be bad spark plugs or cables so I changed them and...

Your vehicle has electronic throttle control . Position sensor's in the gas pedal an the throttle body , inputs to the Throttle Actuator Control Module
The TAC module is the control center for the throttle actuator control system. The TAC system is self-diagnosing and provides diagnostic information to the PCM through a dedicated serial data line. The TAC achieves throttle positioning by providing a pulse width modulated voltage to the TAC as directed by the PCM.

The throttle actuator control (TAC) system delivers improved throttle response and greater reliability and eliminates the need for mechanical cable. The TAC system performs the following functions:
• Accelerator pedal position sensing
• Throttle positioning to meet driver and engine demands
• Throttle position sensing
• Internal diagnostics
• Cruise control functions
• Manage TAC electrical power consumption
The TAC system components include the following:
• The accelerator pedal position (APP) sensors
• The throttle body assembly
• The throttle actuator control module
• The powertrain control module (PCM)
Accelerator Pedal Position (APP) Sensor
The accelerator pedal assembly contains 2 individual APP sensors within the assembly. The accelerator pedal position (APP) sensors 1 and 2 potentiometer type sensors each with 3 circuits:
• A 5-volt reference circuit
• A low reference circuit
• A signal circuit
The APP sensors are used to determine the pedal angle. The control module provides each APP sensor a 5-volt reference circuit and a low reference circuit. The APP sensors then provide the control module with signal voltage proportional to pedal movement. APP sensor 1 signal voltage is low at the rest position and increases as the accelerator pedal is applied. APP sensor 2 signal voltage is high at the rest position and decreases as the accelerator is applied.
Throttle Body Assembly
The throttle body assembly consists of the throttle body, the throttle position (TP) sensors, and the throttle actuator motor. The throttle body functions similar to a similar to a conventional throttle body with the following exceptions:
• An electric motor opens and closes the throttle valve.
• The throttle blade is spring loaded in both directions and the default position is slightly open.
• There are 2 individual TP sensors within the throttle body assembly.
The TP sensors 1 and 2 are potentiometer type sensors each with 3 circuits:
• A 5-volt reference circuit
• A low reference circuit
• A signal circuit
The TP sensors are used to determine the throttle plate angle. The control module provides each TP sensor a 5-volt reference circuit and a low reference circuit. The TP sensors then provide the control module with signal voltage proportional to throttle plate movement. Both TP sensor signal voltages are low at closed throttle and increase as the throttle opens.

Flickering light's could be caused by a bad diode in the alternator . Fluctuating idle could be caused same alternator problem or dirty throttle plate.
Throttle Body Cleaning To Restore Idle Quality

Jul 15, 2017 | 2003 GMC Yukon

1 Answer

Code P1577 APP sensor output throttle position sensor error

Code 1577 - Pedal position sensor disagreement between sensors

Having read most of the other posts regarding EFM issues it would appear that there are a few main suspects: Brake Switch : Dirty Throttle Body : Throttle Body Connections : Accelerator Pedal Sensor.

Given that the car operates without issue on cruise control and using steering wheel speed adjustment, I am guessing the problem is with the Pedal Sensor.

After tightening the Throttle Position Sensor I had about 4weeks of no warnings. Then on a very rainy day I drove from Dundee to Edinburgh and at the end of the trip the EFM warning re-surfaced. I took the car to get the OBDII codes read and the technician flagged up 1 code: P1577 Pedal Position Sensor Disagreement btwn Sensors.

He cleared the codes and suggested that I might think about cleaning the connections. However since he cleared the codes I have had no more warnings and am reluctant to do anything at present.

I think that all the snow (much of which I dragged into the footwell with my big workies boots) has created a little to much damp in that area and some of the water has evaporated then condensed on the PPS.

Hope helps.

Aug 12, 2010 | 2000 Jaguar S-Type

3 Answers

1999 Chevrolet Malibu Code PO122 problem fault code in the emission test and P0341 fault code in emssion test.

po341 is camshaft position sensor A bank 1 ckt range/perf and po122 istps/pedal position sensor A curcuit low input this is throttle position switch on side of throttle body!

Jun 05, 2009 | 1999 Chevrolet Malibu

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