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P1219 Buick Code - Throttle Position Sensor Refernce Voltage

Quick Answer

When the diagnostic trouble code P1219 appears on a Buick vehicle, it indicates a problem with the throttle position sensor reference voltage. Common causes include Faulty throttle position sensor, Corroded or damaged wiring/connectors, Issues with 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
P1219 Buick indicates Throttle Position Sensor Refernce Voltage.
Common causes
Common causes include Faulty throttle position sensor, Corroded or damaged wiring/connectors, Issues with 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 Sep 10, 2024
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Code P1219 Buick Description

When the diagnostic trouble code P1219 appears on a Buick vehicle, it indicates a problem with the throttle position sensor reference voltage. The throttle position sensor (TPS) plays a crucial role in the engine's performance by monitoring the position of the throttle pedal and sending signals to the engine control module (ECM) to adjust the air-fuel mixture for optimal performance. The reference voltage is the voltage supplied to the sensor to ensure accurate readings.

OBDII Code P1219 Buick - Throttle Position Sensor Refernce Voltage
P1219 Buick Code - Throttle Position Sensor Refernce Voltage

Common Causes of P1219 Buick

  1. Faulty throttle position sensor
  2. Corroded or damaged wiring/connectors
  3. Issues with the ECM
  4. Low battery voltage affecting sensor readings
  5. Vacuum leaks affecting sensor operation

Symptoms of P1219 Buick

  1. Check engine light is illuminated
  2. Engine runs rough or idles erratically
  3. Hesitation or lack of response during acceleration
  4. Stalling or difficulty starting the engine
  5. Poor fuel economy

How to Fix P1219 Buick

  1. Diagnose the issue by using a scan tool to verify the P1219 code and check the throttle position sensor's voltage readings.
  2. Inspect the wiring harness and connectors for any signs of damage or corrosion. Repair or replace any damaged components.
  3. Test the throttle position sensor for proper operation. If faulty, replace the sensor with a new one.
  4. Clear the trouble code from the ECM's memory and perform a test drive to ensure the issue is resolved.
  5. If the problem persists, further diagnostics may be required to identify any underlying issues with the ECM or other components.

Cost to Fix P1219 Buick

The cost of repairing a throttle position sensor reference voltage issue on a Buick can vary depending on the extent of the problem and the cost of parts and labor. On average, the repair cost can range from $150 to $300. However, it is essential to keep in mind that the specific diagnosis time and labor rates at auto repair shops can vary based on location, vehicle make and model, and engine type. It is advisable to check with local repair shops to get a more accurate estimate for this issue.

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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 P1219 Buick Code

1. What are the common symptoms of OBDII code P1219 (Buick) related to the Throttle Position Sensor Reference Voltage?

The common symptoms include poor acceleration, rough idling, stalling, and a decrease in fuel efficiency.

2. What are the possible causes of OBDII code P1219 (Buick) indicating an issue with the Throttle Position Sensor Reference Voltage?

Possible causes include a faulty throttle position sensor, damaged wiring or connectors, a failing PCM (powertrain control module), or a problem with the sensor's reference voltage supply.

3. How can I diagnose the reason behind OBDII code P1219 (Buick) triggering for the Throttle Position Sensor Reference Voltage?

You can diagnose the issue by checking the throttle position sensor's voltage output using a multimeter, inspecting the sensor and its connections for any visible damage, and performing a thorough scan of the vehicle's electrical system.

4. Is it safe to continue driving with OBDII code P1219 (Buick) indicating a problem with the Throttle Position Sensor Reference Voltage?

It is not recommended to continue driving with this code active, as it can lead to further damage to the engine and compromise the vehicle's performance and safety.

5. How can I repair OBDII code P1219 (Buick) related to the Throttle Position Sensor Reference Voltage?

Repairing this code typically involves replacing the faulty throttle position sensor, repairing any damaged wiring or connectors, or addressing any issues with the vehicle's PCM.

6. Can a DIY enthusiast fix OBDII code P1219 (Buick) caused by the Throttle Position Sensor Reference Voltage issue?

While some DIY enthusiasts may be able to address this issue, it is recommended to seek assistance from a professional mechanic to accurately diagnose and repair the problem.

7. Are there any preventive measures to avoid OBDII code P1219 (Buick) related to the Throttle Position Sensor Reference Voltage in the future?

Regular maintenance such as cleaning the throttle body, ensuring proper engine tuning, and inspecting the sensor and its connections can help prevent issues with the throttle position sensor reference voltage.

8. Will resetting the OBDII system clear the P1219 code for the Throttle Position Sensor Reference Voltage?

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

9. How long does it typically take to repair OBDII code P1219 (Buick) associated with the Throttle Position Sensor Reference Voltage?

The repair time can vary depending on the exact cause of the issue, but it may take a few hours to a day for a mechanic to diagnose and fix the problem.

10. How much does it cost to repair OBDII code P1219 (Buick) related to the Throttle Position Sensor Reference Voltage?

The cost of repairing this code can vary based on the extent of the damage and the parts needed, but it can range from $100 to $300 or more for parts and labor.

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