AutoCodes – Generic – P1A24

P1A24 Code - Hybrid Battery 1 Voltage

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: P1A24 indicates Hybrid Battery 1 Voltage.
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 2,342

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 P1A24 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 P1A24 - Hybrid Battery 1 Voltage - AutoCodes.com — P1A24 Code - Hybrid Battery 1 Voltage

What does this mean?

What are the Possible Causes of the DTC P1A24?

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 P1A24?

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 P1A24 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 P1A24 code?

Need more information on how to fix the P1A24 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1A24 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1A24 Buick — Hybrid Battery 1 Voltage
P1A24 Cadillac — Hybrid Battery 1 Voltage
P1A24 Chevrolet — Hybrid Battery 1 Voltage
P1A24 GMC — Hybrid Battery 1 Voltage
P1A24 Saturn — Hybrid Battery 1 Voltage

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 P1A24 Code

1. What are common symptoms of OBDII code P1A24 (Hybrid Battery 1 Voltage)?

The common symptoms of code P1A24 include reduced hybrid system performance, decreased fuel efficiency, and warning lights on the dashboard.

2. What are the possible causes of OBDII code P1A24 (Hybrid Battery 1 Voltage)?

The code P1A24 can be triggered by issues such as a faulty hybrid battery cell, high voltage circuit problems, or a malfunction in the battery management system.

3. How serious is OBDII code P1A24 (Hybrid Battery 1 Voltage)?

Code P1A24 should be addressed promptly as it can lead to further damage to the hybrid system and affect the vehicle's overall performance and fuel economy.

4. Can I continue driving with OBDII code P1A24 (Hybrid Battery 1 Voltage) present?

It is not recommended to continue driving with code P1A24 active, as it may cause further damage to the hybrid system. It is best to have the issue diagnosed and repaired as soon as possible.

5. How can I diagnose OBDII code P1A24 (Hybrid Battery 1 Voltage) at home?

Diagnosing code P1A24 typically requires specialized diagnostic equipment to test the hybrid battery voltage levels and check for any anomalies in the system.

6. What are some repair tips for addressing OBDII code P1A24 (Hybrid Battery 1 Voltage)?

Repairing code P1A24 may involve replacing a faulty hybrid battery cell, addressing high voltage circuit issues, or recalibrating the battery management system as recommended by a qualified technician.

7. Is it safe to reset OBDII code P1A24 (Hybrid Battery 1 Voltage) using a diagnostic tool?

Resetting the code without addressing the underlying issue may temporarily clear the warning light, but the problem will likely reoccur. It is essential to diagnose and repair the root cause of the code.

8. How much does it cost to repair OBDII code P1A24 (Hybrid Battery 1 Voltage)?

The cost of repairing code P1A24 can vary depending on the specific issue causing the fault. It is advisable to consult with a professional technician for an accurate diagnosis and cost estimate.

9. Can a DIY enthusiast repair OBDII code P1A24 (Hybrid Battery 1 Voltage) themselves?

Repairing code P1A24 may require specialized knowledge and tools related to hybrid vehicle systems. It is recommended to seek assistance from a qualified technician to ensure proper diagnosis and repair.

10. How often does OBDII code P1A24 (Hybrid Battery 1 Voltage) occur in hybrid vehicles?

Code P1A24 related to Hybrid Battery 1 Voltage can occur in hybrid vehicles, especially as they age or if there are issues with the hybrid battery or related components. Regular maintenance and monitoring can help prevent such codes from appearing.