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P0122 2007 Nissan Pathfinder Code - Throttle Position Sensor/Switch '1' Circuit Low Input

Quick Answer

The P0122 diagnostic trouble code (DTC) for a 2007 Nissan Pathfinder indicates a problem with the Throttle Position Sensor/Switch '1' Circuit, specifically a low input signal. Common causes include Faulty throttle position sensor, Damaged or corroded wiring/connectors in the TPS circuit, Issues with the ECM. 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
P0122 2007 Nissan Pathfinder indicates Throttle Position Sensor/Switch '1' Circuit Low Input.
Common causes
Common causes include Faulty throttle position sensor, Damaged or corroded wiring/connectors in the TPS circuit, Issues with the ECM.
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 16, 2024
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Code P0122 2007 Nissan Pathfinder Description

The P0122 diagnostic trouble code (DTC) for a 2007 Nissan Pathfinder indicates a problem with the Throttle Position Sensor/Switch '1' Circuit, specifically a low input signal. The throttle position sensor (TPS) is a crucial component of the vehicle's electronic control system, as it monitors the position of the throttle valve and sends this information to the engine control module (ECM). The ECM uses this data to determine the appropriate air-fuel mixture for optimal engine performance and efficiency.

OBDII Code P0122 2007 Nissan Pathfinder - Throttle Position Sensor/Switch '1' Circuit Low Input
P0122 2007 Nissan Pathfinder Code - Throttle Position Sensor/Switch '1' Circuit Low Input

Common Causes of P0122 2007 Nissan Pathfinder

  1. Faulty throttle position sensor
  2. Damaged or corroded wiring/connectors in the TPS circuit
  3. Issues with the ECM
  4. Poor electrical connection
  5. Environmental factors such as moisture or debris affecting the TPS

Symptoms of P0122 2007 Nissan Pathfinder

  1. Poor acceleration and throttle response
  2. Rough idling or stalling
  3. Decreased fuel efficiency
  4. Check Engine Light illuminated on the dashboard

How to Fix P0122 2007 Nissan Pathfinder

  1. Begin by diagnosing the issue using a scan tool to confirm the P0122 code and identify the specific cause.
  2. Inspect the throttle position sensor, wiring, and connectors for any signs of damage or corrosion. Replace any faulty components.
  3. Clear the DTC from the ECM memory using the scan tool and perform a throttle position sensor relearn procedure.
  4. Test drive the vehicle to ensure that the issue has been resolved and that the TPS is functioning correctly.
  5. If the problem persists, further diagnostics may be required to pinpoint the exact cause, such as testing the ECM or checking for any underlying electrical issues.

Cost to Fix P0122 2007 Nissan Pathfinder

The typical repair costs for addressing a P0122 code on a 2007 Nissan Pathfinder can vary depending on the specific cause of the issue. In general, replacing a faulty throttle position sensor can cost between $50 and $200, while addressing wiring or connector issues may range from $100 to $300. Labor costs can add an additional $80 to $150 per hour, with the total repair bill potentially amounting to $150 to $500 or more. It's important to note that these estimates are rough averages and actual costs may vary based on factors such as location, vehicle make and model, and the extent of the repairs needed. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate.

When is the Code Detected?

An excessively low voltage from the Throttle Position Sensor (TPS) is sent to Engine Control Module (ECM).

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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 P0122 2007 Nissan Pathfinder Code

1. What does the OBDII code P0122 mean on a 2007 Nissan Pathfinder?

P0122 indicates that the Throttle Position Sensor (TPS) "1" circuit has a voltage input that is lower than the expected range, signaling a potential issue with the TPS or its wiring.

2. What are the common symptoms of code P0122 in a 2007 Nissan Pathfinder?

Symptoms may include poor acceleration, reduced engine performance, stalling, hesitation, and the check engine light being illuminated.

3. What causes the P0122 code on a 2007 Nissan Pathfinder?

Common causes include a faulty throttle position sensor, damaged or corroded wiring, a loose electrical connection, or a malfunctioning engine control module (ECM).

4. How do I diagnose the P0122 code on my 2007 Nissan Pathfinder?

Start by using an OBDII scanner to confirm the code, inspect the TPS and its wiring for damage or corrosion, and measure the TPS voltage with a multimeter to ensure it's within the specified range.

5. Can I drive my 2007 Nissan Pathfinder with a P0122 code?

Driving with a P0122 code is not recommended, as it can cause reduced engine performance and potentially lead to unsafe driving conditions.

6. How can I fix the P0122 code on a 2007 Nissan Pathfinder?

Repairs may involve replacing the throttle position sensor, repairing or replacing damaged wiring, cleaning electrical connections, or reprogramming the ECM if necessary.

7. How much does it cost to fix a P0122 code on a 2007 Nissan Pathfinder?

The cost can vary, but replacing the TPS typically costs $100-$300, including parts and labor. Additional repairs for wiring or ECM issues may increase the cost.

8. Can a dirty throttle body cause the P0122 code in a 2007 Nissan Pathfinder?

While not a direct cause, a dirty throttle body can lead to improper TPS readings, which might trigger the P0122 code. Cleaning the throttle body may help if it's contributing to the issue.

9. Does the P0122 code always mean the throttle position sensor is bad?

No, the code could also result from wiring issues, poor electrical connections, or a malfunctioning ECM, so proper diagnosis is important before replacing parts.

10. Will a hard reset of the ECM clear the P0122 code on a 2007 Nissan Pathfinder?

Clearing the code with an OBDII scanner or resetting the ECM may temporarily erase it, but if the underlying issue isn't fixed, the code will likely return.

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