Engine-CodesGMC – P0223 2014 GMC Sierra

P0223 2014 GMC Sierra Code - Throttle Position Sensor 2 Circuit High Voltage

Quick Answer

The P0223 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the Throttle Position Sensor 2 Circuit registering high voltage. Common causes include Faulty throttle position sensor, Damaged or corroded wiring/connectors, Malfunctioning engine control module (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
P0223 2014 GMC Sierra indicates Throttle Position Sensor 2 Circuit High Voltage.
Common causes
Common causes include Faulty throttle position sensor, Damaged or corroded wiring/connectors, Malfunctioning engine control module (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.
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P0223 2014 GMC Sierra Description

The P0223 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the Throttle Position Sensor 2 Circuit registering high voltage. The throttle position sensor (TPS) is a crucial component of the vehicle's electronic throttle control system, responsible for monitoring the position of the throttle pedal and sending signals to the engine control module (ECM) to adjust the throttle opening accordingly. In this case, the TPS is reporting a voltage that is higher than the expected range, which can lead to various performance issues and potential long-term effects if not addressed promptly.

OBDII Code P0223 2014 GMC Sierra - Throttle Position Sensor 2 Circuit High Voltage
P0223 2014 GMC Sierra Code - Throttle Position Sensor 2 Circuit High Voltage

Common Causes of P0223 2014 GMC Sierra

  1. Faulty throttle position sensor
  2. Damaged or corroded wiring/connectors
  3. Malfunctioning engine control module (ECM)
  4. Issues with the throttle body
  5. Environmental factors such as moisture or debris affecting sensor operation

Symptoms of P0223 2014 GMC Sierra

  1. Sudden acceleration or deceleration
  2. Rough idling or stalling
  3. Lack of power or responsiveness
  4. Poor fuel efficiency
  5. Difficulty shifting gears

How to Fix P0223 2014 GMC Sierra

  1. Begin by conducting a thorough inspection of the throttle position sensor, wiring, and connectors for any visible damage or corrosion.
  2. Use a multimeter to test the TPS for proper voltage output and resistance values according to manufacturer specifications.
  3. If the TPS is found to be faulty, replace it with a new, OEM-quality sensor.
  4. Check and repair any damaged wiring or connectors as needed.
  5. Clear the DTC from the ECM memory using a diagnostic scan tool and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0223 2014 GMC Sierra

The typical repair costs for addressing a P0223 code on a 2014 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing a faulty throttle position sensor can range from $50 to $200, while addressing wiring or connector issues may add additional labor costs. Overall, the total repair bill for this issue could range from $150 to $400, including parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to obtain quotes from multiple sources to ensure a competitive price.

Tech Notes for P0223 2014 GMC Sierra









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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 P0223 2014 GMC Sierra Code

1. What does the OBDII code P0223 mean on a 2014 GMC Sierra?

P0223 indicates that the Throttle Position Sensor (TPS) 2 circuit is experiencing a high voltage issue, which could affect the throttle system's performance.

2. What are the common symptoms of code P0223 on a 2014 GMC Sierra?

Symptoms include reduced engine power, poor acceleration, the "Reduced Engine Power" warning message, or the Check Engine Light turning on.

3. What causes the P0223 code on a GMC Sierra?

Common causes include a faulty throttle position sensor, damaged wiring or connectors in the TPS circuit, or issues with the powertrain control module (PCM).

4. Can I drive my 2014 GMC Sierra with a P0223 code?

Driving with this code is not recommended as it can cause reduced power, poor throttle response, and potential safety issues.

5. How do I diagnose a P0223 code on a 2014 GMC Sierra?

Start by inspecting the TPS wiring and connectors for damage or corrosion. Then, use a multimeter to check the voltage at the TPS and test the sensor itself.

6. How do I fix the P0223 code on my GMC Sierra?

Repairs may include replacing the throttle position sensor, repairing damaged wiring, cleaning corroded connectors, or reprogramming the PCM if necessary.

7. How much does it cost to fix a P0223 code on a 2014 GMC Sierra?

The cost of repair depends on the issue. TPS replacement typically costs $100-$300, while wiring repairs or PCM reprogramming may vary.

8. Can a dirty throttle body cause a P0223 code on a GMC Sierra?

While a dirty throttle body is not a direct cause, it can affect throttle response and should be cleaned as part of regular maintenance.

9. Does resetting the Check Engine Light fix the P0223 code?

Resetting the light clears the code temporarily, but the underlying issue must be repaired to prevent the code from returning.

10. How do I prevent the P0223 code from occurring again?

Regularly inspect and maintain the throttle body, TPS, and wiring to ensure they are clean and free of damage.

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