AutoCodes – Saturn – P1B76 Saturn

P1B76 Saturn Code - Hybrid/Electric Vehicle Battery 49 Circuit Low Voltage

Quick Answer

The Hybrid/Electric Vehicle battery pack contains 288 cells. Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module. 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: P1B76 Saturn indicates Hybrid/Electric Vehicle Battery 49 Circuit Low Voltage.
Common causes: Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module.
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 787

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 Mar 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1B76 Saturn Description

The Hybrid/Electric Vehicle battery pack contains 288 cells. Groups of three cells are welded together in parallel. There are a total of 96 cell groups in the hybrid/EV battery pack assembly. These cell groups are electrically connected in-series. Each individual cell group is rated at 3.7 V, for a nominal system voltage of 355 V direct current. The battery cells are also grouped together into three sections. The first 90 cells/30 cell groups make up battery section one. This section is adjacent to the cowl and contains batteries 67 through to 96. Battery section two is located behind section one. It is made up of 72 cells/24 cell groups and contains batteries 43 through to 66. The transverse battery section is section number three, it is made up of the remaining 126 cells/42 cell groups and contains batteries 1 through to 42. The three battery sections are individually serviceable components.
The battery energy control module monitors the voltage of the 96 battery cell groups through the four hybrid/EV battery interface control modules. Voltage sense circuits are attached to each individual cell group, and these sense circuits terminate at a connector located on the top surface of the battery section. A serviceable auxiliary battery wiring harness joins this connector to a hybrid/EV battery interface control module, also located on the top surface of the battery section. The hybrid/EV battery interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one hybrid/EV battery interface control module located on battery sections one and two, and two hybrid/EV battery interface control modules associated with battery section three. The hybrid/EV battery interface control module, battery energy control module wiring harness, auxiliary battery wiring harness, and battery energy control module are all considered serviceable components.
The battery energy control module will determine when a fault condition is present. Diagnostics and system status are communicated from the battery energy control module to hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for diagnostic trouble code information.

OBDII Code P1B76 Saturn - Hybrid/Electric Vehicle Battery 49 Circuit Low Voltage - AutoCodes.com — P1B76 Saturn Code - Hybrid/Electric Vehicle Battery 49 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1B76 Saturn?

Faulty Hybrid/Electric Vehicle Battery Pack
Faulty Hybrid/Electric Vehicle Battery Interface Control Module

How to Fix the DTC P1B76 Saturn?

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 P1B76 Saturn 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.

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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 P1B76 Saturn Code

1. What are common symptoms of OBDII code P1B76 Saturn indicating Hybrid/Electric Vehicle Battery 49 Circuit Low Voltage?

- Common symptoms include reduced electric vehicle range, difficulties starting the vehicle, and warning lights on the dashboard related to the hybrid/electric system.

2. What are the possible causes of OBDII code P1B76 Saturn Hybrid/Electric Vehicle Battery 49 Circuit Low Voltage?

- Causes can include a faulty hybrid/electric vehicle battery, issues with the battery management system, poor electrical connections, or a defective battery temperature sensor.

3. How can I diagnose the OBDII code P1B76 Saturn Hybrid/Electric Vehicle Battery 49 Circuit Low Voltage at home?

- You can use an OBDII scanner to read the code, inspect the battery connections for corrosion or damage, and check the battery voltage using a multimeter.

4. Can a DIY enthusiast repair OBDII code P1B76 Saturn Hybrid/Electric Vehicle Battery 49 Circuit Low Voltage?

- While some basic checks like inspecting connections can be done at home, repairing issues related to the hybrid/electric vehicle battery usually requires specialized knowledge and tools, so it's recommended to seek professional help.

5. What should I do if I encounter OBDII code P1B76 Saturn Hybrid/Electric Vehicle Battery 49 Circuit Low Voltage while driving?

- If you experience this code while driving, it's advisable to pull over safely, turn off the vehicle, and have the hybrid/electric system inspected by a qualified mechanic to prevent further damage.

6. Are there any safety concerns associated with OBDII code P1B76 Saturn Hybrid/Electric Vehicle Battery 49 Circuit Low Voltage?

- Yes, continuing to drive with a low voltage issue in the hybrid/electric vehicle battery can potentially lead to further damage to the electrical system or even pose a safety risk, so prompt attention is crucial.

7. How much does it cost to repair OBDII code P1B76 Saturn Hybrid/Electric Vehicle Battery 49 Circuit Low Voltage?

- The cost of repairs can vary depending on the specific issue causing the code, but it's recommended to budget for diagnostic fees, potential parts replacement, and labor costs associated with troubleshooting and fixing the problem.

8. Can ignoring OBDII code P1B76 Saturn Hybrid/Electric Vehicle Battery 49 Circuit Low Voltage cause long-term damage?

- Ignoring this code can lead to decreased performance of the hybrid/electric vehicle system, potential battery damage, and higher repair costs in the long run, so it's best to address the issue promptly.

9. Is it safe to drive my vehicle with OBDII code P1B76 Saturn Hybrid/Electric Vehicle Battery 49 Circuit Low Voltage?

- It is not recommended to continue driving the vehicle with this code present, as it indicates a potential issue with the hybrid/electric system that can impact the vehicle's performance and safety.

10. How often should I have the hybrid/electric system checked to prevent OBDII code P1B76 Saturn Hybrid/Electric Vehicle Battery 49 Circuit Low Voltage?

- Regular maintenance checks, especially focusing on the hybrid/electric system, can help prevent issues like low voltage in the battery circuit. It's advisable to follow the manufacturer's recommended maintenance schedule for your vehicle.