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P1225 2012 Nissan Altima Sedan Code - Closed Throttle Position Learning Performance Problem

Quick Answer

The P1225 code in a 2012 Nissan Altima Sedan indicates a Closed Throttle Position Learning Performance Problem. Common causes include Faulty throttle position sensor (TPS), Wiring or connector issues in the TPS circuit, Dirty or malfunctioning throttle body. 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
P1225 2012 Nissan Altima Sedan indicates Closed Throttle Position Learning Performance Problem.
Common causes
Common causes include Faulty throttle position sensor (TPS), Wiring or connector issues in the TPS circuit, Dirty or malfunctioning throttle body.
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 P1225 2012 Nissan Altima Sedan Description

The P1225 code in a 2012 Nissan Altima Sedan indicates a Closed Throttle Position Learning Performance Problem. This code is related to the throttle position sensor (TPS) and its ability to accurately detect the position of the throttle when it is closed. The TPS is a crucial component of the engine management system, as it helps regulate the air-fuel mixture and engine performance based on the driver's throttle input.

OBDII Code P1225 2012 Nissan Altima Sedan - Closed Throttle Position Learning Performance Problem
P1225 2012 Nissan Altima Sedan Code - Closed Throttle Position Learning Performance Problem

Common Causes of P1225 2012 Nissan Altima Sedan

  1. Faulty throttle position sensor (TPS)
  2. Wiring or connector issues in the TPS circuit
  3. Dirty or malfunctioning throttle body
  4. Vacuum leaks in the intake system
  5. Engine control module (ECM) malfunction

Symptoms of P1225 2012 Nissan Altima Sedan

  1. Hesitation or lack of response when pressing the accelerator pedal
  2. Rough idling or unstable engine RPM
  3. Stalling or difficulty starting the engine
  4. Reduced fuel efficiency
  5. Illumination of the Check Engine Light

How to Fix P1225 2012 Nissan Altima Sedan

  1. Begin by connecting a diagnostic scanner to the vehicle's OBD-II port to retrieve the trouble codes and confirm the P1225 code.
  2. Inspect the throttle position sensor (TPS) and its wiring for any signs of damage or wear. Replace the TPS if necessary.
  3. Clean the throttle body to remove any carbon buildup or debris that may be affecting its performance.
  4. Check for vacuum leaks in the intake system and repair any leaks found.
  5. Clear the trouble codes from the ECM and perform a throttle position relearn procedure to reset the closed throttle position.

Cost to Fix P1225 2012 Nissan Altima Sedan

The typical repair costs for addressing a P1225 code in a 2012 Nissan Altima Sedan can vary depending on the specific cause of the issue. In general, replacing a faulty throttle position sensor (TPS) can cost between $100 and $300, including parts and labor. Cleaning the throttle body may cost around $50 to $100, while diagnosing and repairing wiring or connector issues can range from $100 to $200. Overall, the total repair cost for this issue may fall between $200 and $600, but it is advisable to consult with a qualified mechanic for a more accurate estimate based on the specific circumstances of the vehicle. Keep in mind that labor rates at auto repair shops can vary, so it's recommended to inquire about local rates before proceeding with the repair.

When is the Code Detected?

Closed throttle position learning value is excessively low.

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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 P1225 2012 Nissan Altima Sedan Code

1. What does the OBDII code P1225 mean on a 2012 Nissan Altima Sedan?

P1225 indicates a "Closed Throttle Position Learning Performance Problem," meaning the engine control module (ECM) has detected an issue with the throttle position learning process.

2. What are the symptoms of the P1225 code in a 2012 Nissan Altima?

Common symptoms include rough idling, poor acceleration, stalling, reduced engine power, and the check engine light turning on.

3. What causes the P1225 code to appear?

The code can be triggered by a dirty or faulty throttle body, a malfunctioning throttle position sensor, wiring issues, or an incomplete throttle position learning procedure.

4. How do you fix the P1225 code on a 2012 Nissan Altima?

Start by cleaning the throttle body, ensuring all electrical connections are secure, and performing the throttle position learning procedure. If the issue persists, the throttle body or throttle position sensor may need replacement.

5. What is the throttle position learning procedure?

The throttle position learning procedure allows the ECM to recalibrate the throttle body's closed and open positions. It involves specific steps, such as turning the ignition on and off in a precise sequence, and should be followed according to the service manual.

6. Can a dirty throttle body cause the P1225 code?

Yes, a dirty throttle body can disrupt the throttle plate's movement, preventing the ECM from learning the correct closed throttle position.

7. Is it safe to drive with the P1225 code active?

Driving with this code is not recommended as it can lead to reduced engine performance, stalling, or unsafe driving conditions.

8. How much does it cost to repair the P1225 code on a 2012 Nissan Altima?

Costs can vary, but cleaning the throttle body typically costs $100-$200, while replacing it or the throttle position sensor may range from $300-$700, including labor.

9. Can a disconnected battery cause the P1225 code?

Yes, disconnecting the battery can reset the ECM, requiring the throttle position learning procedure to be performed again.

10. Do I need special tools to perform the throttle position learning procedure?

No special tools are required, but following the exact steps outlined in the service manual is essential for successful calibration.

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