AutoCodes – Buick – P1E19 Buick

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

Quick Answer

The power inverter module, often referred to as the drive motor generator power inverter module, contains three motor control modules and the hybrid powertrain control module. Common causes include Faulty Power Inverter Module, Power Inverter Module harness is open or shorted, Power Inverter Module 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: P1E19 Buick indicates Auxiliary Transmission Fluid Pump Control Module System Voltage Low.
Common causes: Common causes include Faulty Power Inverter Module, Power Inverter Module harness is open or shorted, Power Inverter Module 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 699

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 Jul 04, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E19 Buick Description

The power inverter module, often referred to as the drive motor generator power inverter module, contains three motor control modules and the hybrid powertrain control module. Two of the motor control modules operate their respective drive motor generator based upon power inverter module commands. The third motor control module controls the auxiliary transmission fluid pump motor. The hybrid powertrain control module and the motor control modules share the power inverter module ignition voltage circuit, battery voltage circuits and chassis earth.

OBDII Code P1E19 Buick - Auxiliary Transmission Fluid Pump Control Module System Voltage Low - AutoCodes.com — P1E19 Buick Code - Auxiliary Transmission Fluid Pump Control Module System Voltage Low

What does this mean?

What are the Possible Causes of the DTC P1E19 Buick?

Faulty Power Inverter Module
Power Inverter Module harness is open or shorted
Power Inverter Module circuit poor electrical connection

How to Fix the DTC P1E19 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 P1E19 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.

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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 wonâ€™t fix the underlying issue causing the low voltage, which needs to be addressed to prevent further problems.