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P1224 Nissan Code - Throttle Position Sensor 2 Circuit High Input

Quick Answer

The P1224 diagnostic trouble code (DTC) for Nissan vehicles indicates an issue with the Throttle Position Sensor 2 (TPS2) circuit registering a high input signal. Common causes include Faulty throttle position sensor, Corroded or damaged TPS2 circuit wiring, Loose or poor electrical connections at the sensor. 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
P1224 Nissan indicates Throttle Position Sensor 2 Circuit High Input.
Common causes
Common causes include Faulty throttle position sensor, Corroded or damaged TPS2 circuit wiring, Loose or poor electrical connections at the sensor.
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 09, 2024
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Code P1224 Nissan Description

The P1224 diagnostic trouble code (DTC) for Nissan vehicles indicates an issue with the Throttle Position Sensor 2 (TPS2) circuit registering a high input signal. The throttle position sensor 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 determine the appropriate air-fuel mixture for optimal engine performance and efficiency.

OBDII Code P1224 Nissan - Throttle Position Sensor 2 Circuit High Input
P1224 Nissan Code - Throttle Position Sensor 2 Circuit High Input

Common Causes of P1224 Nissan

  1. Faulty throttle position sensor
  2. Corroded or damaged TPS2 circuit wiring
  3. Loose or poor electrical connections at the sensor
  4. ECM software issues or malfunctions
  5. Mechanical issues affecting the throttle body or related components

Symptoms of P1224 Nissan

  1. Rough idling or unstable engine speed
  2. Stalling or hesitation during acceleration
  3. Reduced engine power or throttle response
  4. Check Engine Light illuminated on the dashboard

How to Fix P1224 Nissan

  1. Begin by conducting a visual inspection of the throttle position sensor and its wiring harness to check for any visible damage, wear, or corrosion.
  2. Use a multimeter to test the voltage output of the TPS2 sensor and compare it to the manufacturer's specifications to determine if it is operating within the correct range.
  3. If the sensor is faulty, replace it with a new OEM or high-quality aftermarket part, ensuring proper alignment and calibration during installation.
  4. Test the system after the repair to verify that the P1224 code has been cleared and that the throttle position sensor is functioning correctly.
  5. Reset the ECM's adaptive memory by disconnecting the vehicle's battery for a few minutes before reconnecting it to allow the system to recalibrate.

Cost to Fix P1224 Nissan

The typical cost to repair a Throttle Position Sensor 2 circuit high input issue can range from $100 to $300, depending on the cost of the replacement sensor and the labor involved. Additional costs may apply if other components need to be replaced or if further diagnostics are required. It's important to consult with a qualified mechanic or auto repair shop to obtain an accurate estimate based on your specific vehicle make and model. Keep in mind that labor rates can vary significantly, so it's advisable to research local rates to get a more precise cost estimate.

When is the Code Detected?

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

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Information for Specific Nissan Models

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.

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