AutoCodes – Chevrolet – P1A5F Chevrolet

P1A5F Chevrolet Code - Battery Energy Control Module Ignition On/Start Switch Circuit High 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: P1A5F Chevrolet indicates Battery Energy Control Module Ignition On/Start Switch Circuit High 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 934

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 Jan 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1A5F Chevrolet 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 P1A5F Chevrolet - Battery Energy Control Module Ignition On/Start Switch Circuit High Voltage - AutoCodes.com — P1A5F Chevrolet Code - Battery Energy Control Module Ignition On/Start Switch Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1A5F Chevrolet?

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 P1A5F Chevrolet?

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 P1A5F Chevrolet 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 P1A5F Chevrolet Code

1. What does the OBDII code P1A5F mean for a Chevrolet vehicle?

The P1A5F code indicates an issue with the Battery Energy Control Module, specifically a high voltage condition in the Ignition On/Start Switch Circuit.

2. What are the common symptoms of the P1A5F code in a Chevrolet?

Symptoms may include the Check Engine Light turning on, reduced hybrid or EV performance, difficulty starting the vehicle, or abnormal electrical behavior.

3. What causes the P1A5F code to appear?

The code can be triggered by faulty wiring, a defective ignition switch, a malfunctioning Battery Energy Control Module, or issues with related circuit connectors.

4. Can I drive my Chevrolet with the P1A5F code active?

Driving with this code is not recommended, as it may lead to reduced performance or further damage to the vehicle's electrical or hybrid systems.

5. How is the P1A5F code diagnosed?

Technicians will use a scan tool to read the code, inspect the wiring and connectors for damage or corrosion, and test the ignition switch and Battery Energy Control Module for proper operation.

6. How do I fix the P1A5F code on my Chevrolet?

Repairs may include replacing damaged wiring, cleaning or securing loose connectors, replacing a faulty ignition switch, or repairing/replacing the Battery Energy Control Module.

7. How much does it cost to fix the P1A5F code on a Chevrolet?

Repair costs vary depending on the issue, but they can range from $100 for minor wiring repairs to over $1,000 if the Battery Energy Control Module needs replacement.

8. Can a dead or weak car battery cause the P1A5F code?

Yes, a weak or failing 12V battery can create electrical issues that might trigger this code, especially in hybrid or EV models.

9. Will clearing the P1A5F code with an OBDII scanner fix the problem?

Clearing the code may temporarily turn off the Check Engine Light, but the underlying issue must be resolved to prevent the code from returning.

10. Is the P1A5F code specific to Chevrolet hybrid or electric vehicles?

Yes, this code is most commonly associated with Chevrolet hybrid or electric models, as it relates to the Battery Energy Control Module and vehicle ignition systems.