AutoCodes – Buick – P1A5E Buick

P1A5E Buick Code - Battery Energy Control Module Ignition On/Start Switch Circuit Low Voltage

Quick Answer

The Body Control Module (BCM) controls the ignition run relay through the control circuit by applying voltage to the circuit. Common causes include Faulty Hybrid Powertrain Control Module 2, Hybrid Powertrain Control Module 2 harness is open or shorted, Hybrid Powertrain Control Module 2 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: P1A5E Buick indicates Battery Energy Control Module Ignition On/Start Switch Circuit Low Voltage.
Common causes: Common causes include Faulty Hybrid Powertrain Control Module 2, Hybrid Powertrain Control Module 2 harness is open or shorted, Hybrid Powertrain Control Module 2 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 774

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 13, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1A5E Buick Description

The Body Control Module (BCM) controls the ignition run relay through the control circuit by applying voltage to the circuit. The ignition circuit is energized when the vehicle power mode is Vehicle ON or Vehicle in Service Mode. The hybrid powertrain control module 2 sends the vehicle power mode status in a serial data message to the battery charger control module, A/C compressor, battery energy control module, fuel pump control module and the Transmission Control Module (TCM).

OBDII Code P1A5E Buick - Battery Energy Control Module Ignition On/Start Switch Circuit Low Voltage - AutoCodes.com — P1A5E Buick Code - Battery Energy Control Module Ignition On/Start Switch Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1A5E Buick?

Faulty Hybrid Powertrain Control Module 2
Hybrid Powertrain Control Module 2 harness is open or shorted
Hybrid Powertrain Control Module 2 circuit poor electrical connection

How to Fix the DTC P1A5E 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 P1A5E 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 P1A5E Buick Code

1. What are the common symptoms of OBDII code P1A5E in a Buick related to the Battery Energy Control Module Ignition On/Start Switch Circuit Low Voltage?

- Common symptoms include difficulty starting the vehicle, intermittent starting issues, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P1A5E in a Buick?

- The code P1A5E may be triggered by a faulty ignition switch, a malfunctioning Battery Energy Control Module, wiring issues, or a weak battery.

3. How can I diagnose the Battery Energy Control Module Ignition On/Start Switch Circuit Low Voltage issue in my Buick?

- Diagnosing the issue involves checking the battery voltage, inspecting the ignition switch and related wiring, and using a diagnostic scanner to retrieve the specific trouble codes.

4. Can a weak battery cause OBDII code P1A5E to appear in a Buick?

- Yes, a weak or failing battery can lead to low voltage issues in the Battery Energy Control Module circuit, triggering the P1A5E trouble code.

5. What are some repair tips for addressing OBDII code P1A5E in a Buick?

- Repair tips include checking and replacing the battery if necessary, inspecting and repairing any damaged wiring, testing and replacing the ignition switch, and resetting the trouble codes after repairs are completed.

6. Is it safe to continue driving my Buick with OBDII code P1A5E present?

- It is not recommended to drive your vehicle with the P1A5E code present, as it may lead to further electrical issues or starting problems. It is best to address the problem promptly.

7. How much does it cost to repair OBDII code P1A5E related to the Battery Energy Control Module in a Buick?

- The cost of repairs can vary depending on the exact cause of the issue. It may range from a simple battery replacement to more extensive repairs involving the ignition switch or module replacement.

8. Can I reset OBDII code P1A5E in my Buick using a diagnostic scanner?

- Yes, you can reset the trouble codes using a diagnostic scanner after performing the necessary repairs to address the Battery Energy Control Module Ignition On/Start Switch Circuit Low Voltage issue.