AutoCodes – GMC – P0223 GMC

P0223 GMC 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 GMC 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 5,618

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

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

What does this mean?

What are the Possible Causes of the DTC P0223 GMC?

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 GMC?

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 GMC 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.

Need more information about the P0223 GMC code?

Need more information on how to fix the P0223 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0223 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

P0223 2014 GMC Sierra — Throttle Position Sensor 2 Circuit High Voltage
P0223 2015 GMC Sierra — Throttle Position Sensor 2 Circuit High Voltage
P0223 2016 GMC Sierra — Throttle Position Sensor 2 Circuit High Voltage
P0223 2017 GMC Sierra — Throttle Position Sensor 2 Circuit High Voltage
P0223 2018 GMC Sierra — Throttle Position Sensor 2 Circuit High Voltage

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 GMC Code

1. What are the common symptoms of OBDII code P0223 GMC (Throttle Position Sensor 2 Circuit High Voltage)?

The common symptoms of code P0223 include the check engine light coming on, reduced engine power, rough idling, and difficulty accelerating.

2. What causes OBDII code P0223 GMC to be triggered?

Code P0223 is typically triggered by a faulty throttle position sensor, damaged wiring or connectors in the throttle position sensor circuit, or a malfunctioning Engine Control Module (ECM).

3. How can I diagnose the cause of OBDII code P0223 GMC?

Diagnosing code P0223 involves using a scan tool to read the code, checking the throttle position sensor for proper operation, inspecting the wiring and connectors for damage, and testing the ECM if necessary.

4. Can I still drive my vehicle with OBDII code P0223 GMC?

It is not recommended to drive your vehicle with code P0223 present, as it can lead to issues like poor performance and potential safety hazards. It's best to address the problem promptly.

5. How can I repair OBDII code P0223 GMC?

Repairing code P0223 involves replacing the faulty throttle position sensor, repairing any damaged wiring or connectors in the sensor circuit, and clearing the code with a scan tool.

6. Is it possible to reset OBDII code P0223 GMC without fixing the underlying issue?

While you can clear the code temporarily with a scan tool, it will likely reappear if the underlying issue is not addressed. It's important to fix the root cause of the problem.

7. Are there any DIY tips for troubleshooting OBDII code P0223 GMC?

You can start by visually inspecting the throttle position sensor and its wiring for any obvious signs of damage. However, a proper diagnosis with a scan tool may be necessary for an accurate assessment.

8. How much does it cost to repair OBDII code P0223 GMC at a repair shop?

The cost of repairing code P0223 can vary depending on the extent of the issue, the labor rates of the repair shop, and the cost of parts. It's best to get a quote from a trusted mechanic.

9. Can a dirty throttle body cause OBDII code P0223 GMC?

While a dirty throttle body can cause related issues, such as poor acceleration or rough idling, it is not typically the direct cause of code P0223. Focus on checking the throttle position sensor and its circuitry first.

10. How often does OBDII code P0223 GMC occur in GMC vehicles?

Code P0223 can occur in GMC vehicles with electronic throttle control systems, especially in models that have been on the road for a while. Regular maintenance and timely repairs can help prevent this code from appearing.