AutoCodes – Cadillac – P0B50 Cadillac

P0B50 Cadillac Code - Hybrid/Electric Vehicle Battery 5 Circuit Performance

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: P0B50 Cadillac indicates Hybrid/Electric Vehicle Battery 5 Circuit Performance.
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 912

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 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0B50 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 P0B50 Cadillac - Hybrid/Electric Vehicle Battery 5 Circuit Performance - AutoCodes.com — P0B50 Cadillac Code - Hybrid/Electric Vehicle Battery 5 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P0B50 Cadillac?

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

How to Fix the DTC P0B50 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 P0B50 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 P0B50 Cadillac Code

1. What are the common symptoms of OBDII code P0B50 in a Cadillac hybrid/electric vehicle?

- Reduced fuel efficiency, difficulty starting the vehicle, illuminated check engine light, and poor performance are common symptoms.

2. What could cause the OBDII code P0B50 to appear in a Cadillac hybrid/electric vehicle?

- The code may be triggered by issues such as a faulty hybrid/electric vehicle battery, damaged wiring, or a malfunctioning battery control module.

3. How can I diagnose the OBDII code P0B50 in my Cadillac hybrid/electric vehicle?

- A thorough inspection of the hybrid/electric vehicle battery system, including checking the battery connections, testing the battery voltage, and scanning for additional trouble codes, is recommended.

4. Can I continue driving my Cadillac with the OBDII code P0B50 present?

- It is not advisable to continue driving with this code present, as it can lead to further damage to the hybrid/electric vehicle system and potentially compromise safety.

5. What are some repair tips for addressing OBDII code P0B50 in a Cadillac hybrid/electric vehicle?

- Repair tips include checking and repairing any damaged wiring, replacing a faulty hybrid/electric vehicle battery, and resetting the system to clear the trouble code.

6. How much does it typically cost to repair OBDII code P0B50 in a Cadillac hybrid/electric vehicle?

- The cost of repair can vary depending on the extent of the issue, but it may involve expenses for parts replacement, labor, and diagnostic testing.

7. Are there any common mistakes to avoid when dealing with OBDII code P0B50 in a Cadillac hybrid/electric vehicle?

- Avoid ignoring the code, as it can lead to more severe problems, and refrain from attempting repairs without the necessary knowledge or tools.

8. Can I reset the OBDII code P0B50 in my Cadillac hybrid/electric vehicle using an OBDII scanner?

- Yes, an OBDII scanner can be used to reset the code after repairs have been made to the hybrid/electric vehicle system.

9. How long does it typically take to repair OBDII code P0B50 in a Cadillac hybrid/electric vehicle?

- The repair time can vary depending on the exact cause of the code and the availability of parts, but it may range from a few hours to a day.

10. Is it possible to prevent OBDII code P0B50 from appearing in my Cadillac hybrid/electric vehicle?

- Regular maintenance of the hybrid/electric vehicle system, including checking the battery and electrical components, can help prevent the occurrence of this trouble code.