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Engine-Codes – GMC – P0222 2014 GMC Sierra

P0222 2014 GMC Sierra Code - Throttle Position Sensor 2 Circuit Low Voltage

Quick Answer

The P0222 code indicates that the Throttle Position Sensor (TPS) 2 circuit is experiencing low voltage. Common causes include Faulty Throttle Position Sensor: The sensor itself may be defective, leading to inaccurate voltage readings, Wiring Issues: Damaged, frayed, or corroded wiring in the TPS circuit can cause low voltage conditions, Poor Electrical Connections: Loose or corroded connectors can disrupt the electrical signal between the TPS and the 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
P0222 2014 GMC Sierra indicates Throttle Position Sensor 2 Circuit Low Voltage.
Common causes
Common causes include Faulty Throttle Position Sensor: The sensor itself may be defective, leading to inaccurate voltage readings, Wiring Issues: Damaged, frayed, or corroded wiring in the TPS circuit can cause low voltage conditions, Poor Electrical Connections: Loose or corroded connectors can disrupt the electrical signal between the TPS and the 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.
What is this?
Table of contents Created and updated by William Orellana on Oct 21, 2024
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Code P0222 2014 GMC Sierra Description

The P0222 code indicates that the Throttle Position Sensor (TPS) 2 circuit is experiencing low voltage. The throttle position sensor is a critical component in a vehicle's engine management system, providing real-time data to the Engine Control Module (ECM) regarding the position of the throttle plate. This information is essential for optimizing fuel injection, ignition timing, and overall engine performance. When the TPS 2 circuit reports low voltage, it can lead to a range of performance issues, including reduced power, poor acceleration, and increased emissions.

OBDII Code P0222 2014 GMC Sierra - Throttle Position Sensor 2 Circuit Low Voltage
P0222 2014 GMC Sierra Code - Throttle Position Sensor 2 Circuit Low Voltage

Common Causes of P0222 2014 GMC Sierra

  1. Faulty Throttle Position Sensor: The sensor itself may be defective, leading to inaccurate voltage readings.
  2. Wiring Issues: Damaged, frayed, or corroded wiring in the TPS circuit can cause low voltage conditions.
  3. Poor Electrical Connections: Loose or corroded connectors can disrupt the electrical signal between the TPS and the ECM.
  4. ECM Malfunction: In rare cases, the Engine Control Module may be faulty, leading to erroneous readings from the TPS.
  5. Environmental Factors: Moisture or contaminants can infiltrate the sensor or wiring, causing electrical issues.

Symptoms of P0222 2014 GMC Sierra

  1. Reduced Engine Power: The vehicle may exhibit a noticeable decrease in acceleration and overall power output.
  2. Poor Throttle Response: Drivers may experience delays or unresponsiveness when pressing the accelerator pedal.
  3. Check Engine Light: The illumination of the check engine light on the dashboard is a common indicator of a fault in the throttle position sensor circuit.
  4. Engine Stalling: The engine may stall unexpectedly, particularly during acceleration or when coming to a stop.
  5. Increased Fuel Consumption: A malfunctioning TPS can lead to improper fuel-air mixture, resulting in decreased fuel efficiency.

How to Fix P0222 2014 GMC Sierra

  1. Diagnostic Scan: Begin with a diagnostic scan to confirm the P0222 code and check for any additional trouble codes that may provide further insight into the issue.
  2. Visual Inspection: Conduct a thorough visual inspection of the throttle position sensor, wiring, and connectors for signs of damage, corrosion, or loose connections.
  3. Test the Throttle Position Sensor: Use a multimeter to test the voltage output of the TPS while manually moving the throttle plate to ensure it operates within the manufacturer's specifications.
  4. Repair or Replace Components: Depending on the findings, repair any damaged wiring or connectors, or replace the throttle position sensor if it is found to be faulty.
  5. Clear Codes and Test Drive: After repairs, clear the diagnostic trouble codes and perform a test drive to ensure the issue has been resolved and the check engine light does not reappear.

Cost to Fix P0222 2014 GMC Sierra

The cost to repair a P0222 code can vary widely based on the specific issue identified during diagnosis. On average, the total cost for parts and labor can range from $150 to $600. A throttle position sensor typically costs between $50 and $200, while labor costs can vary significantly. Most auto repair shops charge between $80 and $150 per hour, and the diagnostic time can take anywhere from 1 to 2 hours. Factors such as location, vehicle make and model, and engine type can influence these rates. In metropolitan areas or at dealerships, rates may be higher, while independent shops may offer more competitive pricing. It is advisable to check local rates for a more precise estimate.

What does this mean?

Tech Notes for P0222 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 P0222 2014 GMC Sierra Code

1. What does the OBDII code P0222 mean on a 2014 GMC Sierra?

P0222 indicates that the throttle position sensor 2 circuit is detecting a voltage lower than the expected range.

2. What are the common symptoms of code P0222 in a 2014 GMC Sierra?

Symptoms may include reduced engine power, poor acceleration, erratic idling, the check engine light turning on, or the vehicle entering "limp mode."

3. What causes the P0222 code to appear in a 2014 GMC Sierra?

Common causes include a faulty throttle position sensor, damaged or corroded wiring, a defective throttle body, or a problem with the PCM (Powertrain Control Module).

4. Can I drive my 2014 GMC Sierra with the P0222 code?

It is not recommended to drive with this code, as the throttle response may be unpredictable and could result in unsafe driving conditions.

5. How is the P0222 code diagnosed in a 2014 GMC Sierra?

A mechanic will use a scan tool to monitor live data, inspect the throttle position sensor and related wiring, and test the voltage signals to determine the underlying issue.

6. How can I fix the P0222 code on my 2014 GMC Sierra?

Possible fixes include replacing the throttle position sensor, repairing damaged wiring or connectors, cleaning the throttle body, or reprogramming/replacing the PCM if necessary.

7. What does the "low voltage" in P0222 mean?

It means the voltage signal from the throttle position sensor 2 is lower than the minimum threshold specified by the manufacturer.

8. How much does it cost to repair the P0222 code on a 2014 GMC Sierra?

Repair costs vary but typically range from $100 to $300 for replacing the throttle position sensor, depending on labor rates and parts pricing.

9. Can a dirty throttle body cause the P0222 code?

Yes, a dirty throttle body can interfere with the proper operation of the throttle position sensor and lead to this code.

10. Do I need to replace the throttle body to fix the P0222 code on my 2014 GMC Sierra?

Not always. Replacing the throttle body is only necessary if it is determined to be faulty after thorough diagnosis of the sensor and wiring.

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