AutoCodes – GMC – P1A34 GMC

P1A34 GMC Code - Hybrid Battery 3 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: P1A34 GMC indicates Hybrid Battery 3 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.

Save to My Repairs My Repairs

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

Code Popularity 1,007

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 P1A34 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 P1A34 GMC - Hybrid Battery 3 Voltage Low - AutoCodes.com — P1A34 GMC Code - Hybrid Battery 3 Voltage Low

What does this mean?

What are the Possible Causes of the DTC P1A34 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 P1A34 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 P1A34 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 P1A34 GMC code?

Need more information on how to fix the P1A34 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1A34 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 P1A34 GMC Code

1. What are the common symptoms of OBDII code P1A34 GMC (Hybrid Battery 3 Voltage Low)?

- Common symptoms include reduced fuel economy, poor acceleration, and the illumination of the hybrid system warning light on the dashboard.

2. What are the possible causes of OBDII code P1A34 GMC (Hybrid Battery 3 Voltage Low)?

- The code can be triggered by issues such as a faulty hybrid battery cell, a problem with the battery management system, or a wiring issue in the hybrid battery system.

3. How can I diagnose OBDII code P1A34 GMC (Hybrid Battery 3 Voltage Low) at home?

- You can use an OBDII scanner to read the code and check the voltage levels of the hybrid battery cells using a multimeter to diagnose the issue.

4. Can driving with OBDII code P1A34 GMC (Hybrid Battery 3 Voltage Low) cause further damage to the vehicle?

- Continuing to drive with this code may lead to further deterioration of the hybrid battery system, affecting the performance and longevity of the vehicle's hybrid components.

5. What are some repair tips for addressing OBDII code P1A34 GMC (Hybrid Battery 3 Voltage Low)?

- Repairing this code may involve replacing the faulty hybrid battery cell, repairing any damaged wiring, or recalibrating the battery management system to ensure proper voltage levels.

6. Is it safe to continue driving my vehicle with OBDII code P1A34 GMC (Hybrid Battery 3 Voltage Low) present?

- It is not recommended to drive the vehicle with this code as it can lead to further damage to the hybrid system and potentially cause unsafe driving conditions.

7. How much does it typically cost to repair OBDII code P1A34 GMC (Hybrid Battery 3 Voltage Low)?

- The cost of repair can vary depending on the specific issue causing the code, but it may range from a few hundred to a few thousand dollars, especially if the hybrid battery needs replacement.

8. Can I reset OBDII code P1A34 GMC (Hybrid Battery 3 Voltage Low) using an OBDII scanner?

- While you can clear the code with an OBDII scanner, it is important to diagnose and address the underlying issue causing the code to prevent it from reoccurring.

9. Are there any DIY fixes for OBDII code P1A34 GMC (Hybrid Battery 3 Voltage Low)?

- DIY fixes may include checking and tightening any loose wiring connections in the hybrid battery system, but more complex issues may require professional diagnosis and repair.

10. How often should I have the hybrid battery system inspected to prevent OBDII code P1A34 GMC (Hybrid Battery 3 Voltage Low)?

- It is recommended to have the hybrid battery system inspected regularly as part of routine maintenance to prevent issues like low voltage and ensure optimal performance.