AutoCodes – Buick – P1EA9 Buick

P1EA9 Buick Code - 14 V Power Module System Low Voltage

Quick Answer

The 14 V power module, also called the accessory DC power control module, monitors its 14 volt circuit when it is enabled. Common causes include Program 14 V Power Module, Faulty 14 V Power Module, 14 V Power Module harness is open or shorted. 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
P1EA9 Buick indicates 14 V Power Module System Low Voltage.
Common causes
Common causes include Program 14 V Power Module, Faulty 14 V Power Module, 14 V Power Module harness is open or shorted.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 713
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 24, 2020
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Code P1EA9 Buick Description

The 14 V power module, also called the accessory DC power control module, monitors its 14 volt circuit when it is enabled. This DTC sets when the 14 volt circuit in the 14 V power module is below this minimum level at the time it is enabled. 14V power module module functions will run only when an APM enable message from the hybrid powertrain control module is active on the serial data circuit.
OBDII Code P1EA9 Buick - 14 V Power Module System Low Voltage - AutoCodes.com
P1EA9 Buick Code - 14 V Power Module System Low Voltage

What are the Possible Causes of the DTC P1EA9 Buick?

  • Program 14 V Power Module
  • Faulty 14 V Power Module
  • 14 V Power Module harness is open or shorted
  • 14 V Power Module circuit poor electrical connection

How to Fix the DTC P1EA9 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 P1EA9 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.

Need more information about the P1EA9 Buick code?

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Need Help with the Code?

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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 P1EA9 Buick Code

1. What are the common symptoms of OBDII code P1EA9 in a Buick related to the 14 V Power Module System Low Voltage?

- Common symptoms may include issues with the vehicle's electrical system, such as dimming lights, erratic behavior of electronic components, and difficulty starting the car.

2. What are the possible causes of the OBDII code P1EA9 in a Buick indicating the 14 V Power Module System Low Voltage?

- Possible causes can include a faulty 14 V power module, a weak battery, poor electrical connections, or a malfunctioning voltage regulator.

3. How can I diagnose the OBDII code P1EA9 in my Buick for the 14 V Power Module System Low Voltage issue?

- Diagnosing this code typically involves using a diagnostic scanner to retrieve the specific fault code, checking the battery voltage, inspecting the power module and related components, and testing the charging system.

4. What are the repair options for fixing the OBDII code P1EA9 indicating the 14 V Power Module System Low Voltage in a Buick?

- Repair options may include replacing the 14 V power module, testing and replacing the battery if necessary, checking and cleaning electrical connections, and ensuring proper functioning of the voltage regulator.

5. Can I drive my Buick with the OBDII code P1EA9 related to the 14 V Power Module System Low Voltage?

- It is not recommended to drive the vehicle for an extended period with this code present, as it may lead to further electrical issues and potential damage to the vehicle's components. It is best to address the problem promptly.

6. How much does it typically cost to repair the OBDII code P1EA9 Buick issue of 14 V Power Module System Low Voltage?

- The cost of repair can vary depending on the exact cause of the problem and the specific components that need to be replaced. It is advisable to consult a mechanic for an accurate estimate.

7. Are there any preventive maintenance tips to avoid encountering the OBDII code P1EA9 in a Buick due to the 14 V Power Module System Low Voltage?

- Regularly checking the vehicle's charging system, ensuring the battery is in good condition, and promptly addressing any electrical issues can help prevent the occurrence of this code.

8. Can a DIY enthusiast fix the OBDII code P1EA9 related to the 14 V Power Module System Low Voltage in a Buick?

- While some basic troubleshooting and maintenance tasks can be performed by DIY enthusiasts, diagnosing and repairing issues related to this code may require specialized tools and expertise. It is advisable to consult a professional mechanic.

9. Will resetting the OBDII code P1EA9 in a Buick fix the 14 V Power Module System Low Voltage problem?

- Resetting the code without addressing the underlying issue will not fix the problem permanently. It is important to diagnose the root cause of the code and perform the necessary repairs to resolve the issue effectively.

10. How urgent is it to address the OBDII code P1EA9 indicating 14 V Power Module System Low Voltage in a Buick?

- It is advisable to address this issue promptly to prevent further electrical problems and potential damage to the vehicle. Ignoring the code can lead to more serious issues and safety hazards.

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