Engine-CodesBuick – P1E19 Buick

P1E19 Buick Code - Auxiliary Transmission Fluid Pump Control Module System Voltage Low

Quick Answer

The P1E19 Buick diagnostic trouble code indicates that there is a low voltage condition detected in the Auxiliary Transmission Fluid Pump Control Module system. Common causes include Faulty auxiliary transmission fluid pump, Malfunctioning control module, Damaged wiring or connectors. 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
P1E19 Buick indicates Auxiliary Transmission Fluid Pump Control Module System Voltage Low.
Common causes
Common causes include Faulty auxiliary transmission fluid pump, Malfunctioning control module, Damaged wiring or connectors.
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.
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code P1E19 Buick Description

The P1E19 Buick diagnostic trouble code indicates that there is a low voltage condition detected in the Auxiliary Transmission Fluid Pump Control Module system. This module is responsible for controlling the operation of the auxiliary transmission fluid pump, which helps to maintain proper fluid pressure in the transmission system. When the system voltage is low, it can lead to issues with the operation of the transmission pump, potentially causing a decrease in transmission fluid pressure and affecting the overall performance of the vehicle.

OBDII Code P1E19 Buick - Auxiliary Transmission Fluid Pump Control Module System Voltage Low
P1E19 Buick Code - Auxiliary Transmission Fluid Pump Control Module System Voltage Low

Common Causes of P1E19 Buick

  1. Faulty auxiliary transmission fluid pump
  2. Malfunctioning control module
  3. Damaged wiring or connectors
  4. Weak battery or charging system
  5. Corrosion or poor connections in the electrical system

Symptoms of P1E19 Buick

  1. Erratic shifting patterns
  2. Harsh shifting
  3. Transmission slipping
  4. Transmission overheating
  5. Illumination of the Check Engine Light

How to Fix P1E19 Buick

  1. Begin by conducting a thorough inspection of the auxiliary transmission fluid pump, control module, wiring, and connectors to identify any visible damage or issues.
  2. Test the battery and charging system to ensure they are providing the correct voltage to the Auxiliary Transmission Fluid Pump Control Module.
  3. Replace any faulty components such as the auxiliary transmission fluid pump, control module, wiring, or connectors as needed.
  4. Clear the diagnostic trouble codes from the vehicle's computer system and perform a test drive to verify that the issue has been resolved.
  5. If the problem persists, further diagnostic testing may be required to pinpoint the exact cause of the low voltage condition.

Cost to Fix P1E19 Buick

The typical repair costs for addressing a P1E19 Buick diagnostic trouble code can vary depending on the specific cause of the issue and the cost of parts and labor. In general, the cost of replacing a faulty auxiliary transmission fluid pump or control module can range from $200 to $800, while addressing wiring or connector issues may cost between $100 and $300. Labor costs can add an additional $80 to $150 per hour, and the total repair bill could range from $300 to $1500 or more. It is advisable to consult with a qualified mechanic or auto repair shop to obtain a more accurate estimate based on the specific circumstances of the vehicle in question.

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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 P1E19 Buick Code

1. What does the OBDII code P1E19 mean on a Buick?

P1E19 indicates that the Auxiliary Transmission Fluid Pump Control Module is detecting a low system voltage, which can affect the operation of the auxiliary transmission fluid pump.

2. What are the symptoms of the P1E19 code in a Buick?

Common symptoms include transmission shifting issues, delayed engagement, reduced fuel efficiency, and a lit check engine light.

3. What causes the P1E19 code to appear?

The code is often caused by a failing auxiliary transmission fluid pump, faulty wiring or connectors, low system voltage, or a malfunctioning control module.

4. Can a weak battery trigger the P1E19 code?

Yes, a weak or undercharged battery can cause low system voltage, which may trigger the P1E19 code.

5. How is the P1E19 code diagnosed?

A mechanic will use a scan tool to confirm the code, inspect the wiring and connectors, test the battery and alternator, and evaluate the auxiliary transmission fluid pump's operation.

6. Can I drive my Buick with the P1E19 code?

Driving with the P1E19 code is not recommended, as it can lead to further transmission issues or damage due to improper fluid circulation.

7. How can the P1E19 code be fixed?

Repairs may include replacing the auxiliary transmission fluid pump, repairing or replacing damaged wiring, charging or replacing the battery, or reprogramming or replacing the control module.

8. How much does it cost to repair the P1E19 code in a Buick?

The repair cost can vary, but it typically ranges from $150 to $1,000 depending on whether the issue is wiring, the pump, or the control module.

9. Is the P1E19 code related to transmission failure?

The code itself does not indicate complete transmission failure, but if ignored, it can lead to severe transmission problems over time.

10. Can clearing the P1E19 code fix the problem?

Clearing the code may temporarily turn off the check engine light, but it won’t fix the underlying issue causing the low voltage, which needs to be addressed to prevent further problems.

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