AutoCodes – GMC – P1A24 GMC

P1A24 GMC 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 GMC 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 966

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

What does this mean?

What are the Possible Causes of the DTC P1A24 GMC?

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 GMC?

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 GMC 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 GMC code?

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Need Help with the Code?

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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 P1A24 GMC Code

1. What does the OBDII code P1A24 mean on a GMC?

P1A24 indicates an issue with the Hybrid Battery 1 Voltage, suggesting the voltage is out of the expected range in the hybrid battery system.

2. What are the common symptoms of the P1A24 code?

Symptoms may include reduced fuel efficiency, a warning light on the dashboard, diminished hybrid system performance, and potential loss of electric-only operation.

3. What causes the P1A24 code to appear?

Common causes include a faulty hybrid battery module, damaged wiring or connectors in the battery circuit, or a malfunctioning hybrid battery control module.

4. Can I continue driving with the P1A24 code?

You may be able to drive, but itâ€™s not recommended as it can lead to further damage to the hybrid system and reduced vehicle performance.

5. How do you diagnose the P1A24 code?

A technician will use a scan tool to verify the code, inspect the hybrid battery and related wiring, and perform voltage and resistance tests to pinpoint the issue.

6. How can I fix the P1A24 code on my GMC?

Repairs may involve replacing a defective hybrid battery module, repairing damaged wiring, or reprogramming/updating the hybrid battery control module.

7. Is the hybrid battery the only possible cause of the P1A24 code?

No, other components like the battery control module or wiring issues can also trigger this code.

8. Will clearing the P1A24 code solve the problem?

Clearing the code may temporarily remove the warning, but the underlying issue will need to be repaired to prevent the code from returning.

9. How much does it cost to repair the P1A24 code?

Repair costs vary depending on the issue, ranging from a few hundred dollars for wiring repairs to several thousand dollars for hybrid battery replacement.

10. Can a weak 12-volt battery cause the P1A24 code?

While unlikely, a weak 12-volt auxiliary battery can sometimes affect the hybrid systemâ€™s performance and should be checked during diagnosis.