AutoCodes – GMC – P1B22 GMC

P1B22 GMC 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 GMC 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 814

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 GMC 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 GMC - Hybrid/Electric Vehicle Battery 31 Circuit Performance - AutoCodes.com — P1B22 GMC Code - Hybrid/Electric Vehicle Battery 31 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B22 GMC?

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

How to Fix the DTC P1B22 GMC?

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 GMC 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 P1B22 GMC Code

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

- Common symptoms include reduced hybrid/electric vehicle performance, decreased fuel efficiency, and potential illumination of the check engine light.

2. What are the possible causes of OBDII code P1B22 GMC indicating Hybrid/Electric Vehicle Battery 31 Circuit Performance issues?

- Possible causes may include a faulty hybrid/electric vehicle battery, damaged wiring or connectors in the battery circuit, or issues with the battery control module.

3. How can I diagnose the source of OBDII code P1B22 GMC for Hybrid/Electric Vehicle Battery 31 Circuit Performance?

- Diagnosis typically involves using a diagnostic scanner to read the code, testing the hybrid/electric vehicle battery voltage and connections, and inspecting the wiring for any visible damage.

4. Can I continue driving my vehicle with OBDII code P1B22 GMC related to Hybrid/Electric Vehicle Battery 31 Circuit Performance?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the hybrid/electric system and potentially leave you stranded.

5. What are some repair tips for addressing OBDII code P1B22 GMC for Hybrid/Electric Vehicle Battery 31 Circuit Performance?

- Repair tips may include checking and repairing any damaged wiring or connectors, testing and possibly replacing the hybrid/electric vehicle battery, and resetting the code after repairs are completed.

6. Is it safe to attempt DIY repairs for OBDII code P1B22 GMC indicating Hybrid/Electric Vehicle Battery 31 Circuit Performance?

- While some basic checks like inspecting wiring and connectors can be done by DIY enthusiasts, more complex repairs involving the battery itself or control module should be handled by a qualified technician.

7. How much can I expect to pay for repairing OBDII code P1B22 GMC related to Hybrid/Electric Vehicle Battery 31 Circuit Performance?

- Repair costs can vary depending on the exact cause of the issue, but expect to pay anywhere from a couple of hundred dollars for simple fixes to over a thousand dollars for battery replacements or control module repairs.

8. How urgent is it to address OBDII code P1B22 GMC for Hybrid/Electric Vehicle Battery 31 Circuit Performance?

- It is recommended to address this code promptly to prevent further damage to the hybrid/electric system and ensure the vehicle operates efficiently and safely.

9. Can extreme weather conditions affect the occurrence of OBDII code P1B22 GMC for Hybrid/Electric Vehicle Battery 31 Circuit Performance?

- Yes, extreme temperatures can impact the performance of the hybrid/electric vehicle battery and potentially trigger this code, so it's important to monitor the system during such conditions.

10. Are there any preventive maintenance measures to reduce the likelihood of encountering OBDII code P1B22 GMC related to Hybrid/Electric Vehicle Battery 31 Circuit Performance?

- Regularly checking the hybrid/electric vehicle battery health, keeping the system clean and well-maintained, and following manufacturer recommendations for maintenance can help prevent issues leading to this code.