AutoCodes – GMC – P1A30 GMC

P1A30 GMC Code - Hybrid Battery 3 Circuit Low 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: P1A30 GMC indicates Hybrid Battery 3 Circuit Low 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 822

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1A30 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 P1A30 GMC - Hybrid Battery 3 Circuit Low Voltage - AutoCodes.com — P1A30 GMC Code - Hybrid Battery 3 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1A30 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 P1A30 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 P1A30 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 P1A30 GMC code?

Need more information on how to fix the P1A30 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1A30 GMC 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 P1A30 GMC Code

1. What are the common symptoms of OBDII code P1A30 GMC (Hybrid Battery 3 Circuit Low Voltage)?

The common symptoms of this code may include decreased fuel efficiency, poor performance, and a warning light on the dashboard.

2. What are the possible causes of OBDII code P1A30 GMC?

Possible causes of this code include a faulty hybrid battery, issues with the battery management system, or problems with the hybrid battery cooling system.

3. How serious is OBDII code P1A30 GMC?

This code indicates a problem with the hybrid battery system, which can affect the performance and efficiency of the vehicle. It is important to address this issue promptly to prevent further damage.

4. Can I continue driving with OBDII code P1A30 GMC?

It is not recommended to drive with this code present, as it can lead to reduced fuel efficiency and potential damage to the hybrid battery system. It is best to have the vehicle inspected and repaired as soon as possible.

5. How can I diagnose OBDII code P1A30 GMC?

Diagnosing this code typically involves using a scan tool to retrieve the code, checking the hybrid battery system for any visible issues, and performing voltage tests on the battery.

6. What are some repair tips for OBDII code P1A30 GMC?

Repairing this code may involve replacing the hybrid battery, repairing any damaged wiring or connections, or recalibrating the battery management system. It is recommended to consult a professional mechanic for proper diagnosis and repair.

7. How much does it cost to fix OBDII code P1A30 GMC?

The cost of fixing this code can vary depending on the cause of the issue and the extent of the repairs needed. It is advisable to obtain a few quotes from different mechanics to determine the most cost-effective solution.

8. Can a DIY enthusiast fix OBDII code P1A30 GMC?

While some basic troubleshooting steps can be performed by a DIY enthusiast, addressing the root cause of this code often requires specialized tools and expertise. It is best to consult a professional mechanic for proper diagnosis and repair.

9. Will OBDII code P1A30 GMC reset itself?

In some cases, the code may reset itself after a certain number of drive cycles if the underlying issue is resolved. However, it is recommended to have the vehicle inspected to ensure the problem is properly addressed.

10. How can I prevent OBDII code P1A30 GMC from recurring?

To prevent this code from recurring, regular maintenance of the hybrid battery system is essential. This includes monitoring the battery's health, following recommended maintenance schedules, and addressing any issues promptly.