AutoCodes – GMC – P1B16 GMC

P1B16 GMC Code - Hybrid/Electric Vehicle Battery 27 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: P1B16 GMC indicates Hybrid/Electric Vehicle Battery 27 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 801

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 P1B16 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 P1B16 GMC - Hybrid/Electric Vehicle Battery 27 Circuit Performance - AutoCodes.com — P1B16 GMC Code - Hybrid/Electric Vehicle Battery 27 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B16 GMC?

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

How to Fix the DTC P1B16 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 P1B16 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 P1B16 GMC Code

1. What are the common symptoms of OBDII code P1B16 GMC related to Hybrid/Electric Vehicle Battery 27 Circuit Performance?

- Common symptoms include poor hybrid battery performance, reduced fuel efficiency, and potential issues with the vehicle's electric drive system.

2. What are the possible causes of OBDII code P1B16 GMC indicating Hybrid/Electric Vehicle Battery 27 Circuit Performance issues?

- Potential causes include faulty hybrid battery cells, damaged wiring or connectors in the battery circuit, or issues with the battery management system.

3. How can I diagnose OBDII code P1B16 GMC concerning Hybrid/Electric Vehicle Battery 27 Circuit Performance?

- Diagnosis typically involves using a professional OBDII scanner to read the code, conducting visual inspections of the battery components, and performing electrical tests on the battery circuit.

4. Can I continue driving my vehicle with OBDII code P1B16 GMC related to Hybrid/Electric Vehicle Battery 27 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 affect overall vehicle performance.

5. What repairs are typically needed to address OBDII code P1B16 GMC indicating Hybrid/Electric Vehicle Battery 27 Circuit Performance problems?

- Repairs may involve replacing faulty battery cells, repairing damaged wiring or connectors, resetting the battery management system, or recalibrating the hybrid system.

6. How much does it cost to fix OBDII code P1B16 GMC that points to Hybrid/Electric Vehicle Battery 27 Circuit Performance issues?

- The cost of repairs can vary depending on the extent of the problem, the need for replacement parts, and labor costs. It's advisable to consult with a professional mechanic for an accurate estimate.

7. Are there any maintenance tips to prevent OBDII code P1B16 GMC related to Hybrid/Electric Vehicle Battery 27 Circuit Performance?

- Regularly inspecting the hybrid battery system, following manufacturer's maintenance recommendations, and avoiding overcharging or deep discharging the battery can help prevent such issues.

8. Can a DIY enthusiast address OBDII code P1B16 GMC concerning Hybrid/Electric Vehicle Battery 27 Circuit Performance?

- While some basic inspections and maintenance tasks can be performed by DIY enthusiasts, diagnosing and repairing complex hybrid/electric system issues should be left to experienced professionals.

9. How long does it take to repair OBDII code P1B16 GMC indicating Hybrid/Electric Vehicle Battery 27 Circuit Performance problems?

- The repair time can vary based on the specific issue, availability of parts, and the mechanic's workload. Some repairs may be completed within a few hours, while others could take longer.

10. Is it necessary to reset the OBDII system after addressing code P1B16 GMC related to Hybrid/Electric Vehicle Battery 27 Circuit Performance?

- Yes, it is recommended to reset the OBDII system after completing repairs to clear the code and ensure proper monitoring of the vehicle's performance.