AutoCodes – GMC – P1A05 GMC

P1A05 GMC Code - Battery Energy Control Module Random Access 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: P1A05 GMC indicates Battery Energy Control Module Random Access 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 1,091

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 P1A05 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 P1A05 GMC - Battery Energy Control Module Random Access Memory - AutoCodes.com — P1A05 GMC Code - Battery Energy Control Module Random Access Memory

What does this mean?

What are the Possible Causes of the DTC P1A05 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 P1A05 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 P1A05 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 P1A05 GMC Code

1. What are the common symptoms of OBDII code P1A05 for the Battery Energy Control Module Random Access Memory in a GMC vehicle?

The common symptoms include issues with hybrid battery performance, reduced fuel efficiency, and potential difficulty starting the vehicle.

2. What are the possible causes of OBDII code P1A05 in a GMC, related to the Battery Energy Control Module Random Access Memory?

Possible causes include a faulty battery energy control module, wiring issues, software glitches, or a weak hybrid battery.

3. How can I diagnose OBDII code P1A05 for the Battery Energy Control Module Random Access Memory in my GMC?

Diagnosis typically involves using an OBDII scanner to read the code, checking the hybrid battery system for any visible damage, and inspecting the wiring connections for any issues.

4. Can I still drive my GMC with OBDII code P1A05 related to the Battery Energy Control Module Random Access Memory?

It is not recommended to drive the vehicle with this code as it can lead to further damage to the hybrid system. It is best to address the issue promptly.

5. How can I reset OBDII code P1A05 for the Battery Energy Control Module Random Access Memory in my GMC?

Resetting the code can be done using an OBDII scanner or by disconnecting the car's battery for a few minutes. However, it is important to address the underlying issue causing the code.

6. Is it possible to repair OBDII code P1A05 in a GMC related to the Battery Energy Control Module Random Access Memory on my own?

Depending on the cause of the code, some repairs may be DIY-friendly, such as checking and securing wiring connections. However, complex issues may require professional diagnosis and repair.

7. What are the potential risks of ignoring OBDII code P1A05 for the Battery Energy Control Module Random Access Memory in my GMC?

Ignoring this code can lead to decreased fuel efficiency, potential damage to the hybrid system, and even safety hazards due to unpredictable vehicle performance.

8. How much does it typically cost to repair OBDII code P1A05 for the Battery Energy Control Module Random Access Memory in a GMC?

The cost of repairs can vary widely depending on the underlying issue. It is advisable to get a diagnostic from a qualified mechanic to determine the exact cost.

9. Are there any preventative maintenance tips to avoid OBDII code P1A05 related to the Battery Energy Control Module Random Access Memory in my GMC?

Regularly servicing the hybrid system, checking the battery health, and addressing any warning signs promptly can help prevent this code from appearing.

10. Can OBDII code P1A05 for the Battery Energy Control Module Random Access Memory in a GMC be intermittent or permanent?

The code can be intermittent if the issue is sporadic or temporary. However, if the underlying problem persists, the code may reappear until the root cause is addressed.