AutoCodes – Cadillac – P1B47 Cadillac

P1B47 Cadillac 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 Cadillac 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 812

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

What does this mean?

What are the Possible Causes of the DTC P1B47 Cadillac?

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

How to Fix the DTC P1B47 Cadillac?

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 Cadillac 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 P1B47 Cadillac Code

1. What are the common symptoms of OBDII code P1B47 in a Cadillac hybrid/electric vehicle?

- Common symptoms include the check engine light coming on, reduced hybrid/electric drive system performance, and potential issues with battery charging.

2. What are some possible causes of OBDII code P1B47 in a Cadillac hybrid/electric vehicle?

- Possible causes may include a high voltage circuit malfunction within the hybrid/electric vehicle battery, issues with battery temperature sensors, or faulty battery management system components.

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

- Diagnosis typically involves using a diagnostic scanner to retrieve the specific fault code, checking the battery system for any visible damage or loose connections, and testing the battery voltage levels.

4. Can I continue driving my Cadillac with OBDII code P1B47 present?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the hybrid/electric vehicle battery and potentially affect vehicle performance.

5. What are some repair tips for addressing OBDII code P1B47 in a Cadillac hybrid/electric vehicle?

- Repair tips may include inspecting and repairing any damaged wiring or connectors in the high voltage circuit, replacing faulty battery temperature sensors, or recalibrating the battery management system.

6. Is it safe to attempt repairing OBDII code P1B47 in a Cadillac hybrid/electric vehicle myself?

- Due to the high voltage nature of the hybrid/electric vehicle system, it is recommended to have repairs related to this code performed by a qualified technician with experience working on hybrid/electric vehicles.

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

- The cost of repairs can vary depending on the specific issue causing the code, but it is advisable to budget for potential expenses related to battery system diagnostics, parts replacement, and labor costs.

8. Can resetting the OBDII code P1B47 in a Cadillac hybrid/electric vehicle make it go away permanently?

- Resetting the code may temporarily turn off the check engine light, but if the underlying issue causing the code is not addressed, it is likely to reoccur and may lead to more significant problems over time.

9. How often should I have the hybrid/electric vehicle battery system inspected to prevent OBDII code P1B47 from occurring?

- It is recommended to have the battery system inspected as part of regular maintenance intervals or whenever you notice any unusual symptoms related to the hybrid/electric drive system.

10. Are there any recalls or technical service bulletins related to OBDII code P1B47 in Cadillac hybrid/electric vehicles?

- It is advisable to check with the manufacturer or authorized dealerships for any recalls or technical service bulletins related to this specific OBDII code to stay informed about potential remedies or updates.