AutoCodes – Buick – P0222 Buick

P0222 Buick Code - Throttle Position Sensor 2 Circuit Low 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: P0222 Buick indicates Throttle Position Sensor 2 Circuit Low 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 1,451

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 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 P0222 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 less than 0.25 V for greater than 1 s.

OBDII Code P0222 Buick - Throttle Position Sensor 2 Circuit Low Voltage - AutoCodes.com — P0222 Buick Code - Throttle Position Sensor 2 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0222 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 P0222 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 P0222 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 P0222 Buick code?

Need more information on how to fix the P0222 Buick code? Get Access to Factory Service Manuals

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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 P0222 Buick Code

1. What are the common symptoms of OBDII code P0222 in a Buick related to the Throttle Position Sensor 2 Circuit Low Voltage issue?

The common symptoms include poor acceleration, stalling or surging at idle, rough idling, and decreased fuel efficiency.

2. What are the potential causes of the P0222 OBDII code in a Buick?

The code P0222 typically indicates a fault with the throttle position sensor 2 circuit, which can be caused by issues such as a faulty sensor, damaged wiring, or a bad connection.

3. How can I diagnose the Throttle Position Sensor 2 Circuit Low Voltage issue in my Buick?

You can diagnose the P0222 code by using a diagnostic scanner to read the code, inspecting the throttle position sensor and its wiring for damage, and testing the sensor's voltage output.

4. Can a faulty throttle position sensor cause other problems besides triggering the P0222 code?

Yes, a faulty throttle position sensor can cause a range of issues, including poor engine performance, incorrect shifting in automatic transmissions, and even triggering other related trouble codes.

5. What are some DIY repair tips for addressing the P0222 code in a Buick?

DIY repair tips for fixing the Throttle Position Sensor 2 Circuit Low Voltage issue may include checking and cleaning sensor connections, replacing the throttle position sensor if necessary, and ensuring proper wiring connections.

6. Is it safe to continue driving my Buick with the P0222 OBDII code present?

It is not recommended to drive your Buick with the P0222 code present, as it can lead to further engine performance issues and potentially cause damage over time. It's best to address the problem promptly.

7. How much does it typically cost to repair the Throttle Position Sensor 2 Circuit Low Voltage issue in a Buick?

The cost of repairing the P0222 code can vary depending on the specific cause of the issue. In general, replacing a faulty throttle position sensor can cost anywhere from $100 to $300, including parts and labor.

8. Can resetting the OBDII system clear the P0222 code in my Buick temporarily?

Resetting the OBDII system may temporarily clear the P0222 code, but if the underlying issue with the throttle position sensor circuit is not addressed, the code is likely to reappear.

9. Are there any preventive measures to avoid encountering the P0222 OBDII code in the future?

To prevent the P0222 code from appearing in the future, it's essential to perform regular maintenance checks on your Buick, including inspecting the throttle position sensor and its wiring for any signs of wear or damage.

10. How long does it take to repair the Throttle Position Sensor 2 Circuit Low Voltage issue in a Buick?

The repair time for the P0222 code can vary depending on the extent of the issue and the availability of parts. In general, a skilled mechanic can complete the repair within a few hours to a day.