AutoCodes – Chevrolet – P1A59 Chevrolet

P1A59 Chevrolet Code - Hybrid Battery Pack Voltage

Quick Answer

The Battery Energy Control Module (BECM) monitors while deviation of the voltage across the battery pack is checked using the 3 module voltage sensors. Common causes include Faulty Battery Pack, Battery Pack harness is open or shorted, Battery Pack 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: P1A59 Chevrolet indicates Hybrid Battery Pack Voltage.
Common causes: Common causes include Faulty Battery Pack, Battery Pack harness is open or shorted, Battery Pack 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 3,287

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 19, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1A59 Chevrolet Description

The Battery Energy Control Module (BECM) monitors while deviation of the voltage across the battery pack is checked using the 3 module voltage sensors. If one module within the battery pack is bad, it will manifest itself in a high Delta V SOH (state of health).

OBDII Code P1A59 Chevrolet - Hybrid Battery Pack Voltage - AutoCodes.com — P1A59 Chevrolet Code - Hybrid Battery Pack Voltage

What does this mean?

What are the Possible Causes of the DTC P1A59 Chevrolet?

Faulty Battery Pack
Battery Pack harness is open or shorted
Battery Pack circuit poor electrical connection

How to Fix the DTC P1A59 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 P1A59 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 P1A59 Chevrolet Code

1. What does the OBDII code P1A59 mean for a Chevrolet?

The P1A59 code indicates an issue with the hybrid battery pack voltage, where the voltage levels are outside the specified range expected by the vehicle's control system.

2. What are the common symptoms of the P1A59 code in a Chevrolet?

Symptoms may include reduced hybrid system performance, a check engine light or hybrid system warning, poor fuel economy, or the vehicle switching to gas-only mode.

3. What causes the P1A59 code to appear in a Chevrolet?

Common causes include a malfunctioning hybrid battery module, corroded or damaged battery connections, a failing battery management system (BMS), or wiring issues in the hybrid system.

4. Can a weak hybrid battery trigger the P1A59 code?

Yes, a weak or degraded hybrid battery can lead to voltage irregularities that may trigger the P1A59 code.

5. How can I diagnose the P1A59 code in a Chevrolet?

Diagnosis typically involves scanning the vehicle with a diagnostic tool, checking the hybrid battery voltage levels, inspecting battery connections, and testing the battery management system.

6. Is it safe to drive a Chevrolet with the P1A59 code?

It is not recommended to drive the vehicle with this code, as it could lead to further damage to the hybrid system or result in a complete loss of hybrid functionality.

7. What repairs might fix the P1A59 code in a Chevrolet?

Repairs may include replacing the hybrid battery pack, repairing or replacing damaged wiring, cleaning corroded battery connections, or reprogramming the battery management system.

8. Can the P1A59 code be caused by a software issue?

Yes, in some cases, outdated or corrupted software in the battery management system can cause this code and may require a software update or reprogramming.

9. How much does it cost to fix the P1A59 code in a Chevrolet?

Repair costs can vary widely, from a few hundred dollars for minor wiring repairs to several thousand dollars if the hybrid battery pack needs replacement.

10. Can a regular mechanic fix the P1A59 code, or do I need a specialist?

While some mechanics can address basic wiring or connection issues, diagnosing and repairing hybrid system components often requires a specialist with hybrid vehicle expertise.