AutoCodes – Cadillac – P1EA9 Cadillac

P1EA9 Cadillac 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 Cadillac 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.

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Code Popularity 872

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 Apr 24, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1EA9 Cadillac 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 Cadillac - 14 V Power Module System Low Voltage - AutoCodes.com — P1EA9 Cadillac Code - 14 V Power Module System Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1EA9 Cadillac?

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 Cadillac?

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 Cadillac 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 Cadillac 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 Cadillac Code

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

- Common symptoms include dim or flickering lights, electrical malfunctions, and issues with the vehicle's power accessories.

2. What could be causing the OBDII code P1EA9 (14 V Power Module System Low Voltage) in a Cadillac?

- Possible causes may include a faulty power module, damaged wiring or connectors, a weak battery, or a failing alternator.

3. How can I diagnose the OBDII code P1EA9 related to the 14 V Power Module System Low Voltage in my Cadillac?

- Diagnosis typically involves checking the battery voltage, inspecting the power module and related components, and testing the charging system with a multimeter.

4. What are some repair tips for addressing the OBDII code P1EA9 Cadillac 14 V Power Module System Low Voltage issue?

- Repair tips may include repairing or replacing damaged wiring, testing and replacing the power module, ensuring proper battery and alternator function, and clearing the fault code.

5. Can driving with the OBDII code P1EA9 Cadillac 14 V Power Module System Low Voltage cause further damage to the vehicle?

- Continuing to drive with this fault code may lead to electrical system issues, potential stalling, or complete loss of power, so it is recommended to address the problem promptly.

6. How urgent is it to fix the OBDII code P1EA9 on a Cadillac related to the 14 V Power Module System Low Voltage?

- It is important to address this issue promptly to avoid potential electrical system failures and ensure the proper functioning of the vehicle's power components.

7. Is it safe to reset the OBDII code P1EA9 (14 V Power Module System Low Voltage) in a Cadillac without making any repairs?

- Simply clearing the fault code without addressing the underlying issue may lead to recurring problems, so it is recommended to diagnose and repair the root cause.

8. Can a DIY enthusiast fix the OBDII code P1EA9 Cadillac 14 V Power Module System Low Voltage issue at home?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address this issue by following repair guides and using proper diagnostic equipment.

9. How much does it typically cost to repair the OBDII code P1EA9 Cadillac 14 V Power Module System Low Voltage problem at a mechanic or dealership?

- Repair costs can vary based on the extent of the issue and parts needed, but it is advisable to obtain quotes from reputable mechanics or dealerships for an accurate estimate.

10. Are there any recalls or technical service bulletins related to the OBDII code P1EA9 (14 V Power Module System Low Voltage) in Cadillac vehicles?

- It is recommended to check with the manufacturer or authorized service centers for any recalls or technical bulletins related to this specific fault code in Cadillac vehicles.