AutoCodes – Buick – P1A04 Buick

P1A04 Buick 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 Buick 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 822

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

What does this mean?

What are the Possible Causes of the DTC P1A04 Buick?

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 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 P1A04 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 P1A04 Buick Code

1. What does OBDII code P1A04 for Buick mean?

The code P1A04 indicates a problem with the Battery Energy Control Module Programming Read Only Memory (BECM PROM) in a Buick vehicle.

2. What are the common symptoms of a P1A04 code in a Buick?

Common symptoms of a P1A04 code in a Buick may include issues with the battery energy control system, reduced hybrid system performance, and potential warning lights on the dashboard.

3. What are the possible causes of a P1A04 code in a Buick?

Possible causes of a P1A04 code in a Buick include a faulty Battery Energy Control Module, damaged wiring or connectors, software issues, or a need for reprogramming the BECM PROM.

4. How can I diagnose a P1A04 code in my Buick?

Diagnosing a P1A04 code in a Buick typically involves using an OBDII scanner to read the code, checking the battery energy control system components for any visible damage, and performing a thorough inspection of the wiring and connectors.

5. Can I drive my Buick with a P1A04 code?

It is not recommended to drive your Buick with a P1A04 code present, as it can affect the performance and safety of your vehicle. It's best to address the issue promptly to avoid further damage.

6. How can I repair a P1A04 code in my Buick?

Repairing a P1A04 code in a Buick may involve replacing the Battery Energy Control Module, repairing any damaged wiring or connectors, and reprogramming the BECM PROM using specialized equipment.

7. Is it necessary to reset the trouble codes after repairing a P1A04 code in a Buick?

Yes, it is important to clear the trouble codes using an OBDII scanner after repairing a P1A04 code in a Buick. This will reset the system and allow you to monitor if the issue has been successfully resolved.

8. How much does it cost to repair a P1A04 code in a Buick?

The cost of repairing a P1A04 code in a Buick can vary depending on the extent of the damage, parts needed for replacement, and labor costs. It is recommended to consult a professional mechanic for an accurate estimate.

9. Can a P1A04 code in a Buick be prevented?

While some causes of a P1A04 code may be unavoidable, regular maintenance and inspections of the battery energy control system in your Buick can help prevent issues that could trigger this code.

10. Is it safe to continue driving my Buick if the P1A04 code disappears on its own?

Even if the P1A04 code disappears on its own, it is still recommended to have your Buick inspected by a professional to ensure that the underlying issue has been properly addressed and to prevent potential future problems.