AutoCodes – Chevrolet – P1B88 Chevrolet

P1B88 Chevrolet Code - Hybrid/Electric Vehicle Battery 55 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: P1B88 Chevrolet indicates Hybrid/Electric Vehicle Battery 55 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 875

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 P1B88 Chevrolet 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 P1B88 Chevrolet - Hybrid/Electric Vehicle Battery 55 Circuit Low Voltage - AutoCodes.com — P1B88 Chevrolet Code - Hybrid/Electric Vehicle Battery 55 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1B88 Chevrolet?

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

How to Fix the DTC P1B88 Chevrolet?

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 P1B88 Chevrolet 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 P1B88 Chevrolet Code

1. What are the common symptoms of OBDII code P1B88 in a Chevrolet hybrid/electric vehicle?

- Common symptoms may include reduced power efficiency, poor acceleration, and potential issues with the vehicle's battery performance.

2. What causes the OBDII code P1B88 Chevrolet Hybrid/Electric Vehicle Battery 55 Circuit Low Voltage?

- This code is typically triggered by a low voltage condition in the hybrid/electric vehicle battery 55 circuit, which may be caused by a faulty battery cell, damaged wiring, or a malfunctioning battery management system.

3. How can I diagnose the issue related to the OBDII code P1B88 in my Chevrolet hybrid/electric vehicle?

- Diagnosing the issue requires a specialized scan tool to read the fault codes, along with testing the battery voltage, checking the condition of the battery cells, and inspecting the wiring for any damage.

4. Is it safe to continue driving my Chevrolet hybrid/electric vehicle with the OBDII code P1B88 present?

- It is not recommended to continue driving the vehicle with this code active, as it can lead to further damage to the battery system and potentially compromise the vehicle's performance and safety.

5. What are some possible repair tips for fixing the OBDII code P1B88 in a Chevrolet hybrid/electric vehicle?

- Repair options may include replacing the damaged battery cell, repairing any faulty wiring, or recalibrating the battery management system to address the low voltage issue.

6. Can I reset the OBDII code P1B88 in my Chevrolet hybrid/electric vehicle by disconnecting the battery?

- While disconnecting the battery may temporarily clear the code, it is important to diagnose and address the underlying issue causing the low voltage condition to prevent the code from reappearing.

7. How much does it typically cost to repair the OBDII code P1B88 in a Chevrolet hybrid/electric vehicle?

- The cost of repair can vary depending on the exact cause of the low voltage condition, but it may involve expenses for parts replacement, labor, and potential system recalibration.

8. Are there any preventive maintenance measures I can take to avoid encountering the OBDII code P1B88 in my Chevrolet hybrid/electric vehicle?

- Regularly monitoring the battery system's performance, conducting routine inspections, and following the manufacturer's recommended maintenance schedule can help prevent issues leading to the P1B88 code.