Engine-Codes - Nissan - P2128 2008 Nissan Sentra

P2128 2008 Nissan Sentra Code - Accelerator Pedal Position Sensor Circuit

- Code Popularity: 1,851 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P2128 2008 Nissan Sentra?

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 2008 Nissan Sentra?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P2128 2008 Nissan Sentra code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops 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)

What Does the P2128 2008 Nissan Sentra Code Mean?

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.
P2128 2008 Nissan Sentra Code - Accelerator Pedal Position Sensor Circuit

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