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Engine-Codes – Nissan – P0122 2010 Nissan Altima Sedan

P0122 2010 Nissan Altima Sedan Code - Throttle Position Sensor/Switch 'A' Circuit Low Input

Quick Answer

The P0122 diagnostic trouble code (DTC) for a 2010 Nissan Altima Sedan indicates an issue with the Throttle Position Sensor/Switch 'A' 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 2010 Nissan Altima Sedan indicates Throttle Position Sensor/Switch 'A' 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 17, 2024
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Code P0122 2010 Nissan Altima Sedan Description

The P0122 diagnostic trouble code (DTC) for a 2010 Nissan Altima Sedan indicates an issue with the Throttle Position Sensor/Switch 'A' Circuit, specifically a low input signal. The throttle position sensor (TPS) is a crucial component of the vehicle's electronic fuel injection system, responsible for monitoring the position of the throttle valve and sending this information to the engine control module (ECM). The ECM uses this data to adjust fuel delivery and ignition timing, optimizing engine performance and fuel efficiency.

OBDII Code P0122 2010 Nissan Altima Sedan - Throttle Position Sensor/Switch 'A' Circuit Low Input
P0122 2010 Nissan Altima Sedan Code - Throttle Position Sensor/Switch 'A' Circuit Low Input

Common Causes of P0122 2010 Nissan Altima Sedan

  1. Faulty Throttle Position Sensor
  2. Damaged or corroded wiring/connectors in the TPS circuit
  3. Issues with the ECM
  4. Throttle body malfunction
  5. Poor electrical connection

Symptoms of P0122 2010 Nissan Altima Sedan

  1. Reduced engine power and responsiveness
  2. Rough idling or stalling
  3. Poor fuel efficiency
  4. Illumination of the Check Engine Light
  5. Difficulty shifting gears in an automatic transmission

How to Fix P0122 2010 Nissan Altima Sedan

  1. Begin by conducting a thorough inspection of the TPS, wiring, and connectors for any visible damage or corrosion.
  2. Test the TPS using a multimeter to check for proper voltage output and resistance.
  3. If the TPS is faulty, replace it with a new one following the manufacturer's guidelines.
  4. Check and repair any damaged wiring or connectors in the TPS circuit.
  5. Clear the DTC using an OBD-II scanner and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0122 2010 Nissan Altima Sedan

The cost of repairing a Throttle Position Sensor/Switch 'A' Circuit Low Input issue on a 2010 Nissan Altima Sedan can vary depending on the specific cause of the problem and the cost of parts and labor in your area. Typically, replacing a faulty TPS can range from $50 to $200, while labor costs can add another $50 to $150. Overall, the total repair cost could be between $100 and $350. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to obtain a detailed estimate from a qualified mechanic before proceeding with the repair.

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 2010 Nissan Altima Sedan Code

1. What are the common symptoms associated with OBDII code P0122 in a 2010 Nissan Altima Sedan?

- Common symptoms include poor acceleration, rough idling, stalling, and potential issues with the transmission shifting.

2. What does the OBDII code P0122 on a 2010 Nissan Altima Sedan indicate?

- The code P0122 indicates a low input signal from the throttle position sensor or its circuit.

3. What are the possible causes of OBDII code P0122 in a 2010 Nissan Altima Sedan?

- Possible causes include a faulty throttle position sensor, damaged wiring or connectors in the TPS circuit, or a problem with the TPS calibration.

4. How can I diagnose the cause of OBDII code P0122 in my 2010 Nissan Altima Sedan?

- You can use a multimeter to test the throttle position sensor's voltage output, check the wiring for any damage, and ensure proper TPS calibration.

5. Can a dirty throttle body cause OBDII code P0122 in a 2010 Nissan Altima Sedan?

- Yes, a dirty throttle body can cause incorrect readings from the throttle position sensor, leading to the P0122 code.

6. How can I repair OBDII code P0122 in my 2010 Nissan Altima Sedan?

- Repair options include replacing the throttle position sensor, repairing damaged wiring, cleaning the throttle body, or recalibrating the TPS.

7. Is it safe to continue driving with OBDII code P0122 in a 2010 Nissan Altima Sedan?

- It is not recommended to drive with the P0122 code as it can cause drivability issues and potentially lead to further damage if left unresolved.

8. Can I reset the OBDII code P0122 in my 2010 Nissan Altima Sedan by disconnecting the battery?

- While disconnecting the battery may clear the code temporarily, it is important to diagnose and fix the underlying issue to prevent the code from reappearing.

9. Will OBDII code P0122 cause the check engine light to illuminate in a 2010 Nissan Altima Sedan?

- Yes, the P0122 code will trigger the check engine light to illuminate to alert you to a potential issue with the throttle position sensor circuit.

10. How much does it typically cost to repair OBDII code P0122 in a 2010 Nissan Altima Sedan?

- The cost of repair can vary depending on the cause of the issue, but it may range from $100 to $300 for parts and labor.

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