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P2138 code acccelarator pedal position

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2006 impala 3.5 LT check engine and service traction control? Code: P2138


DTC P2138: Accelerator Pedal Position (APP) Sensor 1-2 Correlation
Electronic throttle control problem .
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 includes the following components:
• The accelerator pedal position (APP) sensors
• The throttle body assembly
• The engine control module (ECM)

Accelerator Pedal Position (APP) Sensor
The accelerator pedal contains 2 individual accelerator pedal position (APP) sensors within the assembly. The APP 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 APP sensors are used to determine the pedal angle. The engine control module (ECM) provides each APP sensor a 5-volt reference circuit and a low reference circuit. The APP sensors provide the ECM with signal voltage proportional to the pedal movement. The APP sensor 1 signal voltage at rest position is less than 1 volt and increases to more than 4 volts as the pedal is actuated. The APP sensor 2 signal voltage at rest position is less than 0.6 volt and increases to more than 2 volts as the pedal is actuated.
Search P2138 on youtube ,will show diagnostic steps .

Aug 19, 2017 | Cars & Trucks

1 Answer

08 grand prix reduced power codes p1125 p2120 p2138 replaced acc pedal 4/27/16 fixed till now doing it again...


What brand part did you use ? Dorman ? OE ? Did you test the circuitry ? Did you just read the code an replace the part ? 2009 Chevy Silverado P2138 Accelerator Pedal Position Chevy is same as pontiac ! Drive by Wire training

Nov 30, 2016 | 2008 Pontiac Grand Prix

1 Answer

Need to know what some codes r for a 2006 pontiac grand prix


P0411 is an air injection pump code
P1125 and P2138 are both accelerator pedal position sensor codes

Feb 25, 2015 | 2006 Pontiac Grand Prix

2 Answers

P2138 code for a 2004 dodge ram 5.7 liter


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.

Dec 13, 2012 | 2004 Dodge Ram 1500

3 Answers

Error code p2138


Here is the definition. You may need to have someone check the accelerator pedal position sensor and the circuit.

P2138 NISSAN Description The Accelerator Pedal Position (APP) sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the Engine Control Module (ECM).
Accelerator pedal position sensor has two sensors. These sensors are a kind of potentiometers which transform the accelerator pedal position into output voltage, and emit the voltage signal to the ECM.
In addition, these sensors detect the opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals.
Idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine operation
such as fuel cut.
Read more: http://engine-codes.com/p2138_nissan.html#ixzz26J3D2x8s

Sep 12, 2012 | 2010 Nissan Versa 1.8

1 Answer

I have p0700 and p0705 codes, p0455, p1125, and p2125 and p2138 codes


P0700

The transmission of a vehicle which has suffered a transmission problem will send the P0700 code to the vehicle engine control module (ECM)

P0705 Transmission Range Sensor Circuit Malfunction

Possible causes

- Open or short park/neutral position switch circuit
- Poor park/neutral position switch circuit connection
- Misadjusted park/neutral position switch
- Park/neutral position switch may be faulty

P0455. A code p0455 most likely means one or more of the following has happened:

A loose or improperly affixed gas cap

A non-conforming gas cap (i.e. not factory/original brand)

Other leak or damaged piece in EVAP system

P1125 Accelerator Pedal Position (APP) System

P2125 Throttle/Pedal Position Sensor/Switch "E" Circuit

P2138 Throttle possition sensor


Jun 23, 2011 | Chevrolet Equinox Cars & Trucks

2 Answers

Code p2138


P2138 is Throttle Pedal Position Sensor/ Switch D / E Voltage Correlation. Replace the Throttle Pedal Position Sensor/Switch.Remember to have the set code Cleared from the cars computer, this will turn off the check engine light and reset it. Good Luck and have a good XMASS.

Dec 17, 2010 | 2006 Nissan Altima

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