AutoCodes – Generic – P1B22

P1B22 Code - Hybrid/Electric Vehicle Battery 31 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: P1B22 indicates Hybrid/Electric Vehicle Battery 31 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 899

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 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1B22 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 P1B22 - Hybrid/Electric Vehicle Battery 31 Circuit Performance - AutoCodes.com — P1B22 Code - Hybrid/Electric Vehicle Battery 31 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B22?

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

How to Fix the DTC P1B22?

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 P1B22 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?

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Information for Specific Makes

P1B22 Buick — Hybrid/Electric Vehicle Battery 31 Circuit Performance
P1B22 Cadillac — Hybrid/Electric Vehicle Battery 31 Circuit Performance
P1B22 Chevrolet — Hybrid/Electric Vehicle Battery 31 Circuit Performance
P1B22 GMC — Hybrid/Electric Vehicle Battery 31 Circuit Performance
P1B22 Saturn — Hybrid/Electric Vehicle Battery 31 Circuit Performance

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 P1B22 Code

1. What are the common symptoms of OBDII code P1B22 (Hybrid/Electric Vehicle Battery 31 Circuit Performance)?

- The common symptoms include reduced hybrid/electric vehicle performance, decreased fuel efficiency, and illuminated warning lights on the dashboard.

2. What are the possible causes of OBDII code P1B22?

- The code P1B22 may be triggered by issues such as a faulty battery pack, damaged wiring in the battery circuit, or a malfunctioning battery management system.

3. How can I diagnose the OBDII code P1B22?

- Diagnosing code P1B22 typically involves using a specialized OBDII scanner capable of reading hybrid/electric vehicle codes and performing a thorough inspection of the battery system components.

4. Can I continue driving my vehicle with OBDII code P1B22 present?

- It is not recommended to continue driving your vehicle with code P1B22 present, as it can lead to further damage to the hybrid/electric system. It's best to have the issue addressed by a professional technician.

5. What are some repair tips for addressing OBDII code P1B22?

- Repair tips for resolving code P1B22 may include checking and repairing damaged wiring, replacing the battery pack if necessary, and ensuring proper functioning of the battery management system.

6. Is it safe to reset the OBDII code P1B22 without addressing the underlying issue?

- Resetting the code without addressing the underlying issue is not recommended, as the problem may persist and potentially lead to more severe issues with the hybrid/electric vehicle system.

7. How much does it typically cost to repair OBDII code P1B22?

- The cost of repairing code P1B22 can vary depending on the specific cause of the issue, but it may involve expenses related to parts replacement, labor costs, and diagnostic fees.

8. Can a DIY enthusiast fix OBDII code P1B22 at home?

- While some basic troubleshooting steps can be performed at home, addressing OBDII code P1B22 often requires specialized knowledge and tools, making it more suitable for professional repair.

9. Will OBDII code P1B22 cause permanent damage to my hybrid/electric vehicle if left unresolved?

- Ignoring code P1B22 can potentially lead to permanent damage to the hybrid/electric vehicle system, affecting its performance and longevity. It is advisable to address the issue promptly.

10. How often does OBDII code P1B22 occur in hybrid/electric vehicles?

- OBDII code P1B22 (Hybrid/Electric Vehicle Battery 31 Circuit Performance) is relatively uncommon, but it can occur due to various issues related to the battery system in hybrid and electric vehicles.