Login  |  Register
Find local automotive repair shops in your area | AutoCodes.com Shops
Need A Repair Shop?
Find local automotive repair shops in your area.
CarZone Auto | Nissan and Infiniti Service Center

P2138 - Accelerator Pedal Position Sensor Circuit Range/Performance

Possible causes
- Accelerator Pedal Position Sensor harness is open or shorted
- Accelerator Pedal Position Sensor circuit poor electrical connection
- Faulty Accelerator Pedal Position Sensor
- Faulty Electric Throttle Control Actuator
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P2138 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.

P2138 Information for specific makes
P2138 ACURA Accelerator Pedal Position Sensor 1/2 Incorrect Voltage  P2138 Video
P2138 BUICK Accelerator Pedal Position Sensor 1-2 Correlation
P2138 CADILLAC Accelerator Pedal Position Sensor 1-2 Correlation
P2138 CHEVROLET Accelerator Pedal Position Sensor 1-2 Correlation  P2138 Video
P2138 DODGE Throttle/Pedal Pos Sens/Switch F Circ Hi Input
P2138 FORD Throttle/Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
P2138 GMC Accelerator Pedal Position Sensor 1-2 Correlation
P2138 HONDA Accelerator Pedal Position Sensor 1/2 Incorrect Voltage  P2138 Video
P2138 HYUNDAI Accelerator Pedal Position Sensor Circuit Range/Performance
P2138 INFINITI Accelerator Pedal Position Sensor Circuit Range/Performance
P2138 LEXUS Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
P2138 LINCOLN Throttle/Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
P2138 MERCURY Throttle/Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
P2138 NISSAN Accelerator Pedal Position Sensor Circuit Range/Performance
P2138 PONTIAC Accelerator Pedal Position Sensor 1-2 Correlation
P2138 SATURN Accelerator Pedal Position Sensor 1-2 Correlation
P2138 SCION Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
P2138 TOYOTA Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
Need more help?
Privacy Statement - Advertise with Us - Terms of Use - Copyright 1999-2016 Infinitihelp.com
AutoCodes.com - HelpForCars.net - Infinitihelp.com - Nissanhelp.com