AutoCodes – Chevrolet – P1B87 Chevrolet

P1B87 Chevrolet Code - Hybrid/Electric Vehicle Battery 55 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: P1B87 Chevrolet indicates Hybrid/Electric Vehicle Battery 55 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,346

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1B87 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 P1B87 Chevrolet - Hybrid/Electric Vehicle Battery 55 Circuit Performance - AutoCodes.com — P1B87 Chevrolet Code - Hybrid/Electric Vehicle Battery 55 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B87 Chevrolet?

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

How to Fix the DTC P1B87 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 P1B87 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.

Need more information about the P1B87 Chevrolet code?

Need more information on how to fix the P1B87 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1B87 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 P1B87 Chevrolet Code

What does the OBDII code P1B87 mean on a Chevrolet?

1. The code P1B87 indicates an issue with the performance of the Hybrid/Electric Vehicle Battery 55 circuit, typically related to voltage, current, or connection irregularities. 2.

What are the common symptoms of the P1B87 code?

Symptoms may include a check engine light, reduced fuel efficiency, limited electric vehicle mode, or reduced overall vehicle performance. 3.

What causes the P1B87 code to appear?

The code can be triggered by a faulty battery module, damaged wiring or connectors in the circuit, or a malfunctioning battery control module. 4.

Can I drive my Chevrolet with the P1B87 code active?

Driving with this code may be possible, but it can lead to reduced performance and potentially damage the hybrid or electric battery system. Prompt diagnosis and repair are recommended. 5.

How is the P1B87 code diagnosed?

Technicians will use a scan tool to read the code, inspect the battery circuit wiring and connectors, and monitor the battery moduleâ€™s voltage and current performance. 6.

What repairs are commonly needed for the P1B87 code?

Repairs may include replacing damaged wires or connectors, replacing the affected battery module, or reprogramming or replacing the battery control module. 7.

How much does it cost to fix the P1B87 code on a Chevrolet?

Repair costs can vary widely depending on the exact issue but may range from $100 for wiring repairs to over $1,000 for battery module or control module replacement. 8.

Can a weak 12-volt battery cause the P1B87 code?

While the 12-volt battery is usually not the direct cause, a weak or failing 12-volt battery can indirectly affect hybrid system performance and trigger related fault codes. 9.

Does the P1B87 code always mean the hybrid battery is failing?

No, the code does not always indicate a failing battery. It could also be caused by wiring issues, sensor faults, or software problems in the control module. 10.

How can I prevent the P1B87 code from recurring?

Regular maintenance, keeping battery terminals clean, checking for damaged wiring, and promptly addressing warning lights can help prevent this code from recurring.