AutoCodes – GMC – P1A04 GMC

P1A04 GMC Code - Battery Energy Control Module Programming Read Only Memory

Quick Answer

The Battery Energy Control Module (BECM) will diagnose its own systems and determine when a fault condition is present. Common causes include Faulty Battery Energy Control Module (BECM), Battery Energy Control Module (BECM) harness is open or shorted, Battery Energy Control Module (BECM) 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: P1A04 GMC indicates Battery Energy Control Module Programming Read Only Memory.
Common causes: Common causes include Faulty Battery Energy Control Module (BECM), Battery Energy Control Module (BECM) harness is open or shorted, Battery Energy Control Module (BECM) 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 1,103

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 Feb 06, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1A04 GMC Description

The Battery Energy Control Module (BECM) will diagnose its own systems and determine when a fault condition is present. Diagnostics and system status is communicated from the battery energy control module to the hybrid powertrain control module through serial data. The hybrid powertrain control module is the host controller for diagnostic trouble code (DTC) information. The EBECM monitors to detect an Random Access Memory (RAM), Read Only Memory (ROM), Erasable Programmable Read-Only Memory (EPROM) or controller stack overrun. The EBECM sets the OBDII code when the RAM, ROM, EPROM or controller stack overrun is not to factory specifications.
This diagnostic applies to internal microprocessor integrity conditions within the battery energy control module. This fault is internal to the battery energy control module and no external circuits are involved.

OBDII Code P1A04 GMC - Battery Energy Control Module Programming Read Only Memory - AutoCodes.com — P1A04 GMC Code - Battery Energy Control Module Programming Read Only Memory

What does this mean?

What are the Possible Causes of the DTC P1A04 GMC?

Faulty Battery Energy Control Module (BECM)
Battery Energy Control Module (BECM) harness is open or shorted
Battery Energy Control Module (BECM) circuit poor electrical connection

How to Fix the DTC P1A04 GMC?

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 P1A04 GMC 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 P1A04 GMC Code

1. What are the common symptoms of OBDII code P1A04 in a GMC vehicle?

The common symptoms of P1A04 may include a check engine light illuminating on the dashboard, reduced hybrid system performance, and difficulty starting the vehicle.

2. What is the primary cause of OBDII code P1A04 in a GMC vehicle?

The primary cause of P1A04 is usually related to issues with the Battery Energy Control Module (BECM) Programming Read Only Memory (PROM) or the hybrid battery pack.

3. How can I diagnose the OBDII code P1A04 in my GMC vehicle?

Diagnosing P1A04 typically involves using an OBDII scanner to retrieve the code, inspecting the BECM components for any visible damage, and testing the hybrid battery pack's voltage and performance.

4. Can I continue driving my GMC vehicle with OBDII code P1A04 present?

It is not recommended to drive your vehicle with an active P1A04 code, as it can lead to further damage to the hybrid system and potentially cause safety issues while driving.

5. What are some repair options for fixing OBDII code P1A04 in a GMC vehicle?

Repair options for P1A04 may include reprogramming the BECM PROM, replacing faulty BECM components, repairing or replacing the hybrid battery pack, and ensuring proper connections and wiring.

6. How much does it typically cost to repair OBDII code P1A04 in a GMC vehicle?

The cost of repairing P1A04 can vary depending on the extent of the issue, the parts needed for repair, and the labor costs involved. It is recommended to consult a professional mechanic for an accurate estimate.

7. Are there any preventive measures to avoid OBDII code P1A04 in my GMC vehicle?

Regular maintenance of the hybrid system, including checking the BECM components and ensuring the hybrid battery pack is in good condition, can help prevent issues that may trigger P1A04.

8. Can a DIY enthusiast attempt to repair OBDII code P1A04 in a GMC vehicle?

While some basic troubleshooting steps can be performed by a DIY enthusiast, repairing P1A04 often requires specialized tools and knowledge of hybrid systems. It is advisable to seek professional help for complex repairs.

9. Will resetting the OBDII code P1A04 clear the issue in my GMC vehicle?

Resetting the code may temporarily clear the check engine light, but it will not fix the underlying issue causing P1A04. It is crucial to diagnose and address the root cause of the problem.

10. How long does it take to repair OBDII code P1A04 in a GMC vehicle?

The repair time for P1A04 can vary depending on the specific issue and the availability of parts. Some repairs may be completed in a few hours, while more complex issues could take longer, requiring a day or more.