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P2122 2007 Nissan Sentra Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Quick Answer

The P2122 code for a 2007 Nissan Sentra indicates a problem with the Accelerator Pedal Position Sensor Circuit Range/Performance. Common causes include Faulty accelerator pedal position sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination in the sensor connections. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P2122 2007 Nissan Sentra indicates Accelerator Pedal Position Sensor Circuit Range/Performance.
Common causes
Common causes include Faulty accelerator pedal position sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination in the sensor connections.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P2122 2007 Nissan Sentra Description

The P2122 code for a 2007 Nissan Sentra indicates a problem with the Accelerator Pedal Position Sensor Circuit Range/Performance. This sensor is responsible for sending signals to the engine control module (ECM) regarding the position of the accelerator pedal. The ECM uses this information to determine how much fuel to inject into the engine and how to adjust the throttle accordingly. When the sensor circuit's range or performance is outside of the expected parameters, it can lead to drivability issues and potentially affect the vehicle's overall performance.

OBDII Code P2122 2007 Nissan Sentra - Accelerator Pedal Position Sensor Circuit Range/Performance
P2122 2007 Nissan Sentra Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Common Causes of P2122 2007 Nissan Sentra

  1. Faulty accelerator pedal position sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Corrosion or contamination in the sensor connections
  4. ECM software issues
  5. Electrical interference or short circuits in the sensor circuit

Symptoms of P2122 2007 Nissan Sentra

  1. Reduced engine power
  2. Engine hesitation or surging
  3. Illuminated check engine light
  4. Difficulty maintaining a consistent speed
  5. Vehicle going into "limp mode" (reduced performance to prevent further damage)

How to Fix P2122 2007 Nissan Sentra

  1. Begin by connecting a diagnostic scanner to the vehicle's OBD-II port to retrieve the specific fault codes and confirm the issue.
  2. Inspect the accelerator pedal position sensor and its wiring for any visible damage, corrosion, or loose connections.
  3. Test the sensor's output voltage using a multimeter to determine if it is within the manufacturer's specified range.
  4. If the sensor is faulty, replace it with a new one and ensure proper calibration.
  5. Clear the fault codes from the ECM's memory and perform a test drive to verify that the issue has been resolved.

Cost to Fix P2122 2007 Nissan Sentra

The typical repair costs for addressing a P2122 code on a 2007 Nissan Sentra can vary depending on the specific cause of the issue. In general, replacing the accelerator pedal position sensor can cost between $100 and $200, while labor costs can range from $50 to $100. However, if additional wiring repairs or ECM reprogramming are necessary, the total repair bill could increase accordingly. It is advisable to consult with a qualified mechanic or auto repair shop to obtain a more accurate estimate based on the specific circumstances of your vehicle. Keep in mind that diagnostic time and labor rates can vary, so it's essential to inquire about these details before proceeding with the repair.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2122 2007 Nissan Sentra Code

1. What does the OBDII code P2122 mean for a 2007 Nissan Sentra?

P2122 indicates a problem with the Accelerator Pedal Position (APP) Sensor Circuit, specifically low voltage being detected in the sensor's input signal.

2. What are the common symptoms of code P2122 in a 2007 Nissan Sentra?

Symptoms may include reduced engine power, hesitation during acceleration, the throttle not responding properly, and the check engine light being illuminated.

3. What causes the P2122 code in a 2007 Nissan Sentra?

Common causes include a faulty APP sensor, damaged or corroded wiring or connectors, a malfunctioning throttle body, or issues with the vehicle's Powertrain Control Module (PCM).

4. Can I drive my 2007 Nissan Sentra with a P2122 code?

Driving with a P2122 code is not recommended as it can lead to reduced acceleration, poor throttle response, and potential safety issues in traffic.

5. How do you diagnose a P2122 code in a 2007 Nissan Sentra?

Diagnosis involves scanning the vehicle for codes, inspecting the APP sensor and its wiring, checking for loose or corroded connections, and testing the sensor's voltage and ground signals.

6. How do you fix the P2122 code on a 2007 Nissan Sentra?

Repairs may include replacing the APP sensor, repairing or replacing damaged wiring or connectors, cleaning corroded terminals, or reprogramming or replacing the PCM if necessary.

7. How much does it cost to repair a P2122 code on a 2007 Nissan Sentra?

Repair costs vary but typically range from $150 to $400, depending on whether the APP sensor or wiring needs replacement and labor rates.

8. Can a dirty throttle body cause the P2122 code in a 2007 Nissan Sentra?

While not a primary cause, a dirty throttle body can affect throttle response and should be inspected and cleaned during diagnosis.

9. Does the P2122 code always mean the APP sensor is faulty?

No, the issue could also stem from wiring problems, connector corrosion, or a malfunction in the PCM.

10. How can I prevent the P2122 code from occurring in my 2007 Nissan Sentra?

Regularly inspect and maintain the APP sensor, wiring, and connectors, and ensure the throttle body is clean to reduce the risk of this code appearing.

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