AutoCodes – Generic – P1B59

P1B59 Code - Hybrid/Electric Vehicle Battery 39 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: P1B59 indicates Hybrid/Electric Vehicle Battery 39 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 851

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 P1B59 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 P1B59 - Hybrid/Electric Vehicle Battery 39 Circuit High Voltage - AutoCodes.com — P1B59 Code - Hybrid/Electric Vehicle Battery 39 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1B59?

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

How to Fix the DTC P1B59?

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 P1B59 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?

Get the P1B59 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1B59 Buick — Hybrid/Electric Vehicle Battery 39 Circuit High Voltage
P1B59 Cadillac — Hybrid/Electric Vehicle Battery 39 Circuit High Voltage
P1B59 Chevrolet — Hybrid/Electric Vehicle Battery 39 Circuit High Voltage
P1B59 GMC — Hybrid/Electric Vehicle Battery 39 Circuit High Voltage
P1B59 Saturn — Hybrid/Electric Vehicle Battery 39 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 P1B59 Code

1. What are common symptoms of OBDII code P1B59 (Hybrid/Electric Vehicle Battery 39 Circuit High Voltage)?

- Common symptoms include the hybrid/electric vehicle displaying a warning light on the dashboard, decreased fuel efficiency, and potential drivability issues.

2. What can cause the OBDII code P1B59 to trigger?

- This code can be triggered by issues such as a faulty high-voltage battery pack, damaged wiring in the battery circuit, or a malfunctioning battery management system.

3. How serious is the OBDII code P1B59 (Hybrid/Electric Vehicle Battery 39 Circuit High Voltage)?

- This code should be addressed promptly, as it signifies potential issues with the high-voltage system in the hybrid/electric vehicle, which can impact vehicle performance and safety.

4. What are some possible repair tips for OBDII code P1B59?

- Repair tips may include conducting a thorough inspection of the high-voltage battery system, checking for damaged wiring or connections, and testing the battery pack and related components.

5. Can I continue driving my vehicle with the OBDII code P1B59 present?

- It is not recommended to continue driving the vehicle with this code present, as it indicates a potential issue with the high-voltage system that could pose safety risks or further damage if left unaddressed.

6. How do I diagnose the specific cause of OBDII code P1B59?

- Diagnosing the specific cause may require utilizing a diagnostic scanner to read additional codes, conducting voltage tests on the high-voltage system components, and inspecting the battery circuitry for faults.

7. Are there any safety precautions to keep in mind when working on OBDII code P1B59?

- When working on high-voltage systems in hybrid/electric vehicles, always follow manufacturer safety guidelines, wear appropriate personal protective equipment, and consider seeking professional assistance if unsure.

8. Can a DIY enthusiast repair OBDII code P1B59 at home?

- While some basic inspections and tests can be conducted at home, repairing OBDII code P1B59 often requires specialized knowledge and tools related to high-voltage systems, making professional assistance advisable in many cases.

9. How much does it typically cost to repair OBDII code P1B59?

- Repair costs for this code can vary depending on the specific cause, parts needed for replacement, and labor rates. It is recommended to obtain estimates from reputable repair shops or dealerships.

10. Will resetting the OBDII code P1B59 clear the issue permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear. It is essential to diagnose and repair the root cause to prevent future occurrences.