Engine-Codes.com
Engine-Codes – Nissan – P1223 2002 Nissan Altima Sedan

P1223 2002 Nissan Altima Sedan Code - Throttle Position Sensor 2 Circuit Low Input

Quick Answer

The P1223 code for a 2002 Nissan Altima Sedan indicates a problem with the Throttle Position Sensor 2 Circuit, specifically a low input signal. Common causes include Faulty Throttle Position Sensor 2, Wiring issues or a poor connection in the TPS circuit, Corrosion or dirt buildup on the sensor contacts. 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
P1223 2002 Nissan Altima Sedan indicates Throttle Position Sensor 2 Circuit Low Input.
Common causes
Common causes include Faulty Throttle Position Sensor 2, Wiring issues or a poor connection in the TPS circuit, Corrosion or dirt buildup on the sensor contacts.
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
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P1223 2002 Nissan Altima Sedan Description

The P1223 code for a 2002 Nissan Altima Sedan indicates a problem with the Throttle Position Sensor 2 Circuit, specifically a low input signal. The throttle position sensor (TPS) is a crucial component of the vehicle's electronic fuel injection 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.

OBDII Code P1223 2002 Nissan Altima Sedan - Throttle Position Sensor 2 Circuit Low Input
P1223 2002 Nissan Altima Sedan Code - Throttle Position Sensor 2 Circuit Low Input

Common Causes of P1223 2002 Nissan Altima Sedan

  1. Faulty Throttle Position Sensor 2.
  2. Wiring issues or a poor connection in the TPS circuit.
  3. Corrosion or dirt buildup on the sensor contacts.
  4. ECM software or hardware issues.
  5. Mechanical problems with the throttle body or related components.

Symptoms of P1223 2002 Nissan Altima Sedan

  1. Poor acceleration or hesitation when pressing the gas pedal.
  2. Rough idling or stalling when coming to a stop.
  3. Reduced fuel efficiency and increased fuel consumption.
  4. Check Engine Light illuminated on the dashboard.
  5. Engine entering limp mode, limiting power output.

How to Fix P1223 2002 Nissan Altima Sedan

  1. Begin by diagnosing the issue using a diagnostic scanner to confirm the P1223 code and pinpoint the exact cause.
  2. Inspect the Throttle Position Sensor 2 and its wiring for any visible damage, corrosion, or loose connections.
  3. Clean the sensor contacts and connectors to ensure a proper electrical connection.
  4. If the sensor is faulty, replace it with a new one following the manufacturer's guidelines.
  5. Clear the error code from the ECM and perform a test drive to ensure the issue has been resolved.

Cost to Fix P1223 2002 Nissan Altima Sedan

The cost of repairing a Throttle Position Sensor 2 Circuit Low Input issue on a 2002 Nissan Altima Sedan can vary depending on the specific cause of the problem and the labor rates in your area. Typically, the cost of a new Throttle Position Sensor ranges from $50 to $150, while the labor cost for installation can range from $80 to $150 per hour. Therefore, the total repair cost could range from $150 to $400 or more, depending on the extent of the repairs needed. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on your specific situation.

When is the Code Detected?

An excessively low voltage from the Throttle Position (TP) sensor 2 is sent to Engine Control Module (ECM).

Need more information about the P1223 2002 Nissan Altima Sedan code?

Need more information on how to fix the P1223 2002 Nissan Altima Sedan code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1223 2002 Nissan Altima Sedan code diagnosed by a professional: Find a repair shop in your area

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 P1223 2002 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P1223 in a 2002 Nissan Altima Sedan?

The common symptoms of OBDII code P1223 in a 2002 Nissan Altima Sedan include poor acceleration, rough idling, stalling, and decreased fuel efficiency.

2. What does the OBDII code P1223 on a 2002 Nissan Altima Sedan indicate?

OBDII code P1223 on a 2002 Nissan Altima Sedan indicates an issue with the Throttle Position Sensor 2 Circuit Low Input.

3. What are the possible causes of OBDII code P1223 in a 2002 Nissan Altima Sedan?

Possible causes of OBDII code P1223 in a 2002 Nissan Altima Sedan include a faulty throttle position sensor, damaged wiring or connectors, or a problem with the engine control module.

4. How can I diagnose the Throttle Position Sensor 2 Circuit Low Input issue in my 2002 Nissan Altima Sedan?

To diagnose the Throttle Position Sensor 2 Circuit Low Input issue in your 2002 Nissan Altima Sedan, you can use an OBDII scanner to read the trouble code, visually inspect the wiring and connectors, and test the throttle position sensor for proper voltage and resistance.

5. Can I drive my 2002 Nissan Altima Sedan with OBDII code P1223?

It is not recommended to drive your 2002 Nissan Altima Sedan with OBDII code P1223, as it can lead to further damage to the engine and affect the vehicle's performance.

6. How can I repair OBDII code P1223 in my 2002 Nissan Altima Sedan?

To repair OBDII code P1223 in your 2002 Nissan Altima Sedan, you may need to replace the throttle position sensor, repair any damaged wiring or connectors, or reprogram the engine control module.

7. Can a DIY enthusiast fix OBDII code P1223 in a 2002 Nissan Altima Sedan?

Depending on your skills and experience, a DIY enthusiast may be able to fix OBDII code P1223 in a 2002 Nissan Altima Sedan by following repair guides and using the necessary tools.

8. How much does it cost to repair OBDII code P1223 in a 2002 Nissan Altima Sedan?

The cost to repair OBDII code P1223 in a 2002 Nissan Altima Sedan can vary depending on the extent of the issue, parts needed, and labor rates. It is recommended to obtain quotes from local auto repair shops for an accurate estimate.

9. What is the role of the Throttle Position Sensor in a 2002 Nissan Altima Sedan?

The Throttle Position Sensor in a 2002 Nissan Altima Sedan monitors the position of the throttle pedal and sends signals to the engine control module to adjust the air-fuel mixture for optimal engine performance.

10. How often should the Throttle Position Sensor be replaced in a 2002 Nissan Altima Sedan?

The Throttle Position Sensor in a 2002 Nissan Altima Sedan should be replaced as needed or when symptoms of failure like those associated with OBDII code P1223 are present. Regular maintenance checks can help identify issues early.

Discuss the causes and fixes for P1223 2002 Nissan Altima Sedan OBDII Code

Submit a New Comment

Code P1223 2002 Nissan Altima Sedan comments

No comments found for this page.