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P2128 2007 Nissan Pathfinder Code - Accelerator Pedal Position Sensor Circuit

- Code Popularity: 1,791 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P2128 2007 Nissan Pathfinder?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Accelerator Pedal Position (APP) Sensor
  • Accelerator Pedal Position (APP) Sensor harness is open or shorted
  • Accelerator Pedal Position (APP) Sensor circuit poor electrical connection
  • Faulty Engine Control Module (ECM)
  • Electric Throttle Control Actuator(Throttle Body)
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How to Fix the DTC P2128 2007 Nissan Pathfinder?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Search for P2128 2007 Nissan Pathfinder Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2128 2007 Nissan Pathfinder code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

When is the Code Detected?

An excessively low voltage from the APP sensor 2 is sent to ECM.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P2128 2007 Nissan Pathfinder 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 an 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.
OBDII Code P2128 2007 Nissan Pathfinder - Accelerator Pedal Position Sensor Circuit - AutoCodes.com
P2128 2007 Nissan Pathfinder Code - Accelerator Pedal Position Sensor Circuit

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