AutoCodes – Buick – P0223 Buick

P0223 Buick 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 Buick 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 2,420

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
Cost to Diagnose
FAQs
Comments
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Code P0223 Buick 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 Buick - Throttle Position Sensor 2 Circuit High Voltage - AutoCodes.com — P0223 Buick Code - Throttle Position Sensor 2 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0223 Buick?

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 Buick?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0223 Buick 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 Buick code?

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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 Buick Code

1. What are the common symptoms of OBDII code P0223 in a Buick related to the Throttle Position Sensor 2 Circuit High Voltage?

- Common symptoms include erratic engine performance, decreased fuel efficiency, and the vehicle going into limp mode.

2. What are the potential causes of OBDII code P0223 in a Buick indicating a high voltage in the Throttle Position Sensor 2 Circuit?

- Possible causes include a faulty throttle position sensor, damaged wiring or connectors, a malfunctioning engine control module (ECM), or issues with the throttle body.

3. How can I diagnose the Throttle Position Sensor 2 Circuit High Voltage issue in my Buick triggering code P0223?

- Diagnosis involves using an OBDII scanner to read the code, inspecting the throttle position sensor and its wiring, checking for any loose connections, and possibly conducting voltage tests.

4. Can a dirty throttle body cause OBDII code P0223 to appear in my Buick?

- Yes, a dirty or malfunctioning throttle body can disrupt the sensor signals and lead to high voltage readings, triggering the P0223 code.

5. What are some DIY repair tips for fixing OBDII code P0223 related to the Throttle Position Sensor 2 Circuit High Voltage in a Buick?

- DIY repair tips include cleaning the throttle body, checking and repairing any damaged wiring, ensuring proper sensor connection, and resetting the ECM after making repairs.

6. Is it safe to continue driving my Buick with OBDII code P0223 indicating a high voltage in the Throttle Position Sensor 2 Circuit?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage and potentially unsafe driving conditions.

7. How much does it typically cost to repair OBDII code P0223 in a Buick related to the Throttle Position Sensor 2 Circuit High Voltage?

- Repair costs can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

8. Will resetting the Check Engine Light resolve OBDII code P0223 in a Buick?

- Resetting the Check Engine Light may temporarily turn it off, but the underlying issue causing the P0223 code will likely persist until properly diagnosed and repaired.

9. Can a disconnected or loose throttle position sensor cause OBDII code P0223 to trigger in my Buick?

- Yes, a disconnected or loose throttle position sensor can lead to erratic readings and trigger the high voltage condition, resulting in the P0223 code.

10. How long does it typically take to repair OBDII code P0223 related to the Throttle Position Sensor 2 Circuit High Voltage in a Buick?

- The repair time can vary based on the specific cause of the code, but it usually takes around 1-2 hours for a professional mechanic to diagnose and fix the issue.