AutoCodes – Cadillac – P1E43 Cadillac

P1E43 Cadillac Code - 14 Volt Power Module System Overvoltage Sensing Circuit

Quick Answer

The accessory DC power control module, also referred to as the 14 V power module, constantly monitors system input and output voltage. Common causes include Faulty 14 Volt Power Module, 14 Volt Power Module harness is open or shorted, 14 Volt Power 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: P1E43 Cadillac indicates 14 Volt Power Module System Overvoltage Sensing Circuit.
Common causes: Common causes include Faulty 14 Volt Power Module, 14 Volt Power Module harness is open or shorted, 14 Volt Power 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 892

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 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E43 Cadillac Description

The accessory DC power control module, also referred to as the 14 V power module, constantly monitors system input and output voltage. This sensor is internal to the 14 V power module and is not serviced separately from the control module.

OBDII Code P1E43 Cadillac - 14 Volt Power Module System Overvoltage Sensing Circuit - AutoCodes.com — P1E43 Cadillac Code - 14 Volt Power Module System Overvoltage Sensing Circuit

What does this mean?

What are the Possible Causes of the DTC P1E43 Cadillac?

Faulty 14 Volt Power Module
14 Volt Power Module harness is open or shorted
14 Volt Power Module circuit poor electrical connection

How to Fix the DTC P1E43 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 P1E43 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.

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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 P1E43 Cadillac Code

1. What are the common symptoms of OBDII code P1E43 in a Cadillac?

- Common symptoms include dashboard warning lights, such as the battery or charging system light, illuminated, erratic electrical behavior, and potential issues with starting the vehicle.

2. What does the OBDII code P1E43 Cadillac indicate?

- The code P1E43 indicates a fault in the 14 Volt Power Module System Overvoltage Sensing Circuit in a Cadillac.

3. What are the possible causes of the OBDII code P1E43 in a Cadillac?

- Possible causes include a faulty 14 Volt Power Module, damaged wiring or connectors in the overvoltage sensing circuit, or issues with the powertrain control module (PCM).

4. How can I diagnose the OBDII code P1E43 in my Cadillac?

- Diagnosing the code may require using a diagnostic scanner to retrieve the specific fault code, inspecting the 14 Volt Power Module and its connections, and checking for any visible damage to the wiring.

5. Can I continue driving my Cadillac with the OBDII code P1E43 present?

- It is not recommended to continue driving the vehicle with the code present, as it can lead to further electrical issues and potential damage to the vehicle's systems.

6. How can I repair the OBDII code P1E43 in my Cadillac?

- Repairing the code may involve replacing the faulty 14 Volt Power Module, repairing damaged wiring or connectors, or reprogramming the powertrain control module (PCM) if necessary.

7. Is it safe to clear the OBDII code P1E43 in my Cadillac using a diagnostic scanner?

- Clearing the code with a diagnostic scanner may temporarily turn off the warning lights, but it is essential to address and repair the underlying issue causing the fault code.

8. Can a DIY enthusiast fix the OBDII code P1E43 in a Cadillac?

- Depending on the level of expertise and access to tools, a DIY enthusiast may be able to diagnose and repair simpler issues related to the code, such as checking connections and replacing components like fuses.

9. How much does it cost to repair the OBDII code P1E43 in a Cadillac at a mechanic?

- Repair costs can vary depending on the specific cause of the code, but it may involve diagnostic fees, parts replacement costs, and labor charges, which can range from a hundred to a few hundred dollars.

10. How often does the OBDII code P1E43 occur in Cadillac vehicles?

- The occurrence of the code P1E43 can vary, but it is not a common issue in Cadillac vehicles and may indicate a specific electrical fault that needs attention.