AutoCodes – Generic – P1B47

P1B47 Code - Hybrid/Electric Vehicle Battery 33 Circuit High 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: P1B47 indicates Hybrid/Electric Vehicle Battery 33 Circuit High 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 1,227

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 P1B47 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 P1B47 - Hybrid/Electric Vehicle Battery 33 Circuit High Voltage - AutoCodes.com — P1B47 Code - Hybrid/Electric Vehicle Battery 33 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1B47?

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

How to Fix the DTC P1B47?

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 P1B47 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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Need Help with the Code?

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Information for Specific Makes

P1B47 Buick — Hybrid/Electric Vehicle Battery 33 Circuit High Voltage
P1B47 Cadillac — Hybrid/Electric Vehicle Battery 33 Circuit High Voltage
P1B47 Chevrolet — Hybrid/Electric Vehicle Battery 33 Circuit High Voltage
P1B47 GMC — Hybrid/Electric Vehicle Battery 33 Circuit High Voltage
P1B47 Saturn — Hybrid/Electric Vehicle Battery 33 Circuit High 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 P1B47 Code

1. What are the common symptoms of OBDII code P1B47 (Hybrid/Electric Vehicle Battery 33 Circuit High Voltage)?

- Common symptoms include the hybrid/electric vehicle experiencing reduced power, poor performance, and potential illumination of the check engine light.

2. What can cause the OBDII code P1B47 to trigger?

- The code P1B47 is typically triggered by issues such as a malfunction in the high voltage battery circuit 33, wiring faults, or a fault within the battery management system.

3. How serious is the OBDII code P1B47 in a hybrid/electric vehicle?

- The code P1B47 should be addressed promptly to prevent potential damage to the high voltage battery system and ensure the vehicle operates safely and efficiently.

4. How can I diagnose the OBDII code P1B47 in my hybrid/electric vehicle?

- Diagnosis often involves using a professional OBDII scanner to read the code, inspecting the high voltage battery circuit 33 for faults, and testing the battery management system.

5. Can I continue driving my hybrid/electric vehicle with the code P1B47 present?

- It is not recommended to continue driving the vehicle with the code P1B47 present, as it can lead to further damage to the high voltage system and compromise the vehicle's performance.

6. What are some repair tips for fixing OBDII code P1B47?

- Repair tips may include checking and repairing any damaged wiring in circuit 33, inspecting and replacing faulty components in the high voltage system, and resetting the fault code after repairs.

7. How much does it cost to repair OBDII code P1B47 in a hybrid/electric vehicle?

- The cost of repairs for OBDII code P1B47 can vary depending on the extent of the issue, the parts needed for replacement, and labor costs. It is recommended to consult a professional technician for an accurate estimate.

8. Is it safe to reset the OBDII code P1B47 without fixing the underlying issue?

- It is not recommended to simply reset the code without addressing the underlying issue causing the fault, as this may lead to recurring problems and potential safety hazards.

9. Can a DIY enthusiast fix the OBDII code P1B47 in a hybrid/electric vehicle?

- While some basic troubleshooting steps can be performed by a knowledgeable individual, diagnosing and repairing OBDII code P1B47 often requires specialized skills and equipment best handled by a professional technician.

10. How can I prevent the recurrence of OBDII code P1B47 in my hybrid/electric vehicle?

- Regular maintenance, timely inspections of the high voltage system, and addressing any warning signs promptly can help prevent the recurrence of OBDII code P1B47 in your hybrid/electric vehicle.