AutoCodes – Chevrolet – P1A26 Chevrolet

P1A26 Chevrolet Code - Hybrid Battery 1 Voltage Low

Quick Answer

Battery voltage sensors allow the Energy Storage Control Module (ESCM) to monitor the voltage of the batteries in the Energy Storage Box (ESB). Common causes include Faulty Energy Storage Box (ESB) Battery, Faulty Battery Energy Control Module (BECM), Battery Energy Control Module (BECM) harness is open or shorted. 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: P1A26 Chevrolet indicates Hybrid Battery 1 Voltage Low.
Common causes: Common causes include Faulty Energy Storage Box (ESB) Battery, Faulty Battery Energy Control Module (BECM), Battery Energy Control Module (BECM) harness is open or shorted.
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 2,566

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 15, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1A26 Chevrolet Description

Battery voltage sensors allow the Energy Storage Control Module (ESCM) to monitor the voltage of the batteries in the Energy Storage Box (ESB). The batteries apply voltage to internal input resistors that are connected to the signal circuits of the battery voltage sensors. The module provides ground to the battery voltage sensors through the reference circuit. The ESCM monitors the voltage drop across the battery voltage sensors and uses the inputs for hybrid calculations. When the battery voltage is high, the resistances of the sensors are high and the voltage signals are high. When the battery voltage is low, the resistances of the sensors are low and the voltage signals are low.

OBDII Code P1A26 Chevrolet - Hybrid Battery 1 Voltage Low - AutoCodes.com — P1A26 Chevrolet Code - Hybrid Battery 1 Voltage Low

What does this mean?

What are the Possible Causes of the DTC P1A26 Chevrolet?

Faulty Energy Storage Box (ESB) Battery
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 P1A26 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 P1A26 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.

Need more information about the P1A26 Chevrolet code?

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Need Help with the Code?

Get the P1A26 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 P1A26 Chevrolet Code

What does the OBDII code P1A26 mean for my Chevrolet?

The OBDII code P1A26 indicates that there is a low voltage condition in Hybrid Battery 1, which can affect the performance of the hybrid system.

What symptoms might I experience with the P1A26 code?

Common symptoms include reduced engine power, warning lights on the dashboard, poor fuel economy, and potential stalling of the vehicle.

What could cause the P1A26 code to trigger?

The code can be triggered by a failing hybrid battery, poor electrical connections, malfunctioning battery management systems, or issues with charging components.

How can I diagnose the P1A26 code effectively?

To diagnose the P1A26 code, use a scan tool to confirm the code, inspect the hybrid battery and its connections, and check the charging system for any faults.

What are some common repair options for the P1A26 code?

Common repairs may include replacing the hybrid battery, fixing loose or corroded connections, or repairing the battery management system.

Can I drive my Chevrolet if the P1A26 code is active?

While it may be possible to drive the vehicle, it is not recommended as it can lead to further damage to the hybrid system and affect safety.

How can I prevent the P1A26 code from occurring?

Regular maintenance of the hybrid system, ensuring proper battery care, and monitoring battery health can help prevent the P1A26 code from occurring.

Is it safe to reset the P1A26 code without repairs?

Resetting the code without addressing the underlying issue is not safe, as it may lead to further damage and could pose safety risks.

What should I do if the P1A26 code comes back after repairs?

If the code reappears after repairs, it is advisable to have a professional technician conduct a thorough diagnostic to identify any remaining issues.