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

Quick Answer

The P1E19 diagnostic trouble code (DTC) for Chevrolet vehicles indicates a problem with the Auxiliary Transmission Fluid Pump Control Module System Voltage being low. Common causes include Faulty Wiring or Connectors: Corrosion, damage, or loose connections in the wiring harness or connectors can lead to a low voltage condition, Malfunctioning Auxiliary Transmission Fluid Pump: A failing or worn-out auxiliary transmission fluid pump may not be able to maintain proper fluid pressure, causing voltage issues, Defective Control Module: A faulty control module can also trigger the low voltage condition, preventing the pump from operating correctly. 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 Chevrolet indicates Auxiliary Transmission Fluid Pump Control Module System Voltage Low.
Common causes
Common causes include Faulty Wiring or Connectors: Corrosion, damage, or loose connections in the wiring harness or connectors can lead to a low voltage condition, Malfunctioning Auxiliary Transmission Fluid Pump: A failing or worn-out auxiliary transmission fluid pump may not be able to maintain proper fluid pressure, causing voltage issues, Defective Control Module: A faulty control module can also trigger the low voltage condition, preventing the pump from operating correctly.
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 P1E19 Chevrolet Description

The P1E19 diagnostic trouble code (DTC) for Chevrolet vehicles indicates a problem with the Auxiliary Transmission Fluid Pump Control Module System Voltage being low. This code is specifically related to the auxiliary transmission fluid pump, which is responsible for maintaining proper fluid pressure in the transmission system. The control module monitors the voltage levels in the system to ensure that the pump is functioning correctly.

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

Common Causes of P1E19 Chevrolet

  1. Faulty Wiring or Connectors: Corrosion, damage, or loose connections in the wiring harness or connectors can lead to a low voltage condition.
  2. Malfunctioning Auxiliary Transmission Fluid Pump: A failing or worn-out auxiliary transmission fluid pump may not be able to maintain proper fluid pressure, causing voltage issues.
  3. Defective Control Module: A faulty control module can also trigger the low voltage condition, preventing the pump from operating correctly.
  4. Drained or Weak Battery: A weak or drained battery can impact the voltage levels in the system, leading to issues with the auxiliary transmission fluid pump control module.

Symptoms of P1E19 Chevrolet

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the vehicle's dashboard.
  2. Transmission Slipping: A low voltage condition in the auxiliary transmission fluid pump control module can cause the transmission to slip or shift erratically.
  3. Fluid Leaks: In some cases, a malfunctioning auxiliary transmission fluid pump may lead to fluid leaks under the vehicle.
  4. Delayed Gear Engagement: The transmission may experience delays in engaging gears, resulting in poor acceleration or hesitation.

How to Fix P1E19 Chevrolet

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the DTC and perform a thorough inspection of the auxiliary transmission fluid pump, control module, wiring, and connectors.
  2. Test Voltage Levels: Check the voltage levels in the system to determine if they are within the specified range, identifying any discrepancies that may indicate the root cause of the issue.
  3. Replace Faulty Components: Replace any faulty wiring, connectors, the auxiliary transmission fluid pump, or control module as needed to address the low voltage condition.
  4. Clear DTC and Test Drive: Clear the DTC from the vehicle's memory using the diagnostic scanner and test drive the vehicle to ensure that the issue has been resolved.
  5. Perform Transmission Service: Consider performing a transmission fluid flush and filter replacement as part of regular maintenance to ensure optimal performance and longevity of the transmission system.

Cost to Fix P1E19 Chevrolet

The typical repair costs for addressing a P1E19 code on a Chevrolet vehicle can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts such as a new auxiliary transmission fluid pump, control module, wiring harness, or connectors can range from $200 to $800 or more. Labor costs for diagnosis and repair may add an additional $200 to $500 or more, depending on the shop's hourly rates and the complexity of the repair.

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Information for Specific Chevrolet Models

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 Chevrolet Code

1. What are the common symptoms of OBDII code P1E19 in a Chevrolet related to the Auxiliary Transmission Fluid Pump Control Module System Voltage Low?

The common symptoms include illuminated Check Engine Light, transmission shifting issues, reduced fuel efficiency, and potential stalling or rough idling.

2. What are the possible causes of OBDII code P1E19 in a Chevrolet indicating low voltage in the Auxiliary Transmission Fluid Pump Control Module system?

Possible causes include a faulty auxiliary transmission fluid pump control module, damaged wiring or connectors, low battery voltage, or a malfunctioning transmission fluid pump.

3. How can I diagnose the OBDII code P1E19 in my Chevrolet to pinpoint the issue with the Auxiliary Transmission Fluid Pump Control Module System Voltage Low?

Diagnosis involves using a scan tool to retrieve the trouble code, inspecting the wiring and connectors for damage, testing the battery voltage, and checking the operation of the auxiliary transmission fluid pump.

4. Is it safe to continue driving my Chevrolet with OBDII code P1E19 indicating low voltage in the Auxiliary Transmission Fluid Pump Control Module system?

It is not recommended to drive your vehicle with this code as it can lead to potential transmission issues and further damage if not addressed promptly.

5. Can I reset the OBDII code P1E19 in my Chevrolet without repairing the underlying issue with the Auxiliary Transmission Fluid Pump Control Module System Voltage Low?

While you can clear the code temporarily, it will likely reappear if the root cause is not fixed. It's important to address the issue to prevent ongoing problems.

6. What are the repair options for resolving OBDII code P1E19 in a Chevrolet related to the Auxiliary Transmission Fluid Pump Control Module System Voltage Low?

Repair options include replacing the faulty auxiliary transmission fluid pump control module, repairing damaged wiring or connectors, ensuring proper battery voltage, or fixing any issues with the transmission fluid pump.

7. How much does it typically cost to repair OBDII code P1E19 in a Chevrolet caused by low voltage in the Auxiliary Transmission Fluid Pump Control Module system?

The cost of repair can vary depending on the specific cause, but it may range from a few hundred to over a thousand dollars, including parts and labor.

8. Are there any preventative maintenance tips to avoid encountering OBDII code P1E19 in a Chevrolet related to the Auxiliary Transmission Fluid Pump Control Module System Voltage Low?

Regularly checking the transmission system, ensuring proper battery health, and addressing any warning signs promptly can help prevent issues leading to this trouble code.

9. Can a DIY enthusiast with automotive knowledge repair OBDII code P1E19 in a Chevrolet themselves, or is it recommended to seek professional assistance?

While some experienced DIYers may be able to address this code themselves, it's generally recommended to seek professional help, especially when dealing with transmission-related issues for proper diagnosis and repair.

10. Is OBDII code P1E19 specific to Chevrolet vehicles, or can it occur in other makes and models as well?

While this specific code is related to Chevrolet vehicles, similar codes indicating low voltage in the auxiliary transmission fluid pump control module system can occur in other makes and models with similar transmission setups.

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