AutoCodes – GMC – P0223 2015 GMC Sierra

P0223 2015 GMC Sierra Code - Throttle Position Sensor 2 Circuit High Voltage

Quick Answer

The Throttle Body Assembly contains a contact-less inductive throttle position sensing element that is managed by a customized integrated circuit. Common causes include Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted, Throttle Body Assembly circuit poor electrical connection. 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 2015 GMC Sierra indicates Throttle Position Sensor 2 Circuit High Voltage.
Common causes: Common causes include Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted, Throttle Body Assembly circuit poor electrical connection.
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.

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Code Popularity 225

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 20, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P0223 2015 GMC Sierra Description

The Throttle Body Assembly contains a contact-less inductive throttle position sensing element that is managed by a customized integrated circuit. The throttle position sensor is mounted within the throttle body assembly and is not serviceable. The Engine Control Module (ECM) supplies the throttle body with a 5 V reference circuit, a low reference circuit. The asynchronous signal means communication is only going from the throttle body to the ECM. The throttle body cannot receive data from the ECM over the signal/serial data circuit. The throttle position sensor provides a signal voltage that changes relative to throttle blade angle. The throttle position sensor information is transmitted between the throttle body and the ECM on the signal/serial data circuit. The ECM decodes the serial data signal and is used as voltages for throttle position sensor 1 and 2. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the throttle position sensor 2 signal voltage is greater than 4.6 V for greater than 1 s.

OBDII Code P0223 2015 GMC Sierra - Throttle Position Sensor 2 Circuit High Voltage - AutoCodes.com — P0223 2015 GMC Sierra Code - Throttle Position Sensor 2 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0223 2015 GMC Sierra?

Faulty Throttle Body Assembly
Throttle Body Assembly harness is open or shorted
Throttle Body Assembly circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0223 2015 GMC Sierra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0223 2015 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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 2015 GMC Sierra Code

What does the OBDII code P0223 mean for a 2015 GMC Sierra?

P0223 indicates that the Throttle Position Sensor (TPS) 2 circuit is reading a voltage higher than the expected range, signaling a potential issue with the throttle control system.

What are the common symptoms of code P0223 in a 2015 GMC Sierra?

Symptoms may include reduced engine performance, the "Reduced Engine Power" warning on the dashboard, poor throttle response, and the Check Engine Light being illuminated.

What causes the P0223 code to appear?

Common causes include a faulty throttle position sensor, damaged or corroded wiring or connectors in the TPS circuit, a malfunctioning throttle body, or issues with the engine control module (ECM).

How can I diagnose the P0223 code on my GMC Sierra?

Start by using an OBDII scanner to confirm the code. Then inspect the TPS wiring and connectors for damage, test the TPS voltage with a multimeter, and check for any signs of carbon buildup in the throttle body.

Can I drive my 2015 GMC Sierra with the P0223 code?

Driving with a P0223 code is not recommended, as it may cause reduced engine power, unsafe driving conditions, or further damage to throttle system components.

How do I fix the P0223 code on my 2015 GMC Sierra?

Repairs may involve replacing the throttle position sensor, cleaning or replacing the throttle body, repairing damaged wiring, or, in rare cases, replacing the ECM.

How much does it cost to fix the P0223 code on a GMC Sierra?

The cost depends on the repair needed. Replacing the throttle position sensor typically costs $100-$300, while throttle body replacement may cost $200-$600, including parts and labor.

Can a dirty throttle body cause the P0223 code?

Yes, carbon buildup in the throttle body can affect sensor readings and cause high voltage signals, potentially triggering the P0223 code.

Does resetting the Check Engine Light clear the P0223 code?

Clearing the Check Engine Light may temporarily remove the code, but if the underlying issue isn't fixed, the code and symptoms will likely return.

What tools are needed to repair the P0223 code?

Common tools include an OBDII scanner, a multimeter to test voltage, basic hand tools for removing sensors or the throttle body, and possibly throttle body cleaner.