AutoCodes – Generic – P1B17

P1B17 Code - Hybrid/Electric Vehicle Battery 27 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: P1B17 indicates Hybrid/Electric Vehicle Battery 27 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 1,327

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 P1B17 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 P1B17 - Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage - AutoCodes.com — P1B17 Code - Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1B17?

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

How to Fix the DTC P1B17?

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 P1B17 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

P1B17 Buick — Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage
P1B17 Cadillac — Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage
P1B17 Chevrolet — Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage
P1B17 GMC — Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage
P1B17 Saturn — Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage

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 P1B17 Code

1. What are the common symptoms of OBDII code P1B17 (Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage)?

- The common symptoms include reduced hybrid system performance, decreased fuel efficiency, and potential illumination of the check engine light.

2. What are the possible causes of OBDII code P1B17?

- The code P1B17 can be triggered by issues such as a faulty hybrid/electric vehicle battery, damaged wiring in circuit 27, or a malfunctioning battery management system.

3. How can I diagnose the root cause of OBDII code P1B17?

- To diagnose the issue, it is recommended to perform a thorough inspection of the hybrid/electric vehicle battery, check the wiring in circuit 27 for any damage, and use a diagnostic scan tool to retrieve specific fault codes.

4. Is it safe to continue driving with OBDII code P1B17 present?

- It is not advisable to continue driving with code P1B17 active, as it can lead to further damage to the hybrid/electric vehicle system and potentially result in a complete loss of power.

5. Can I repair OBDII code P1B17 on my own?

- Repairing OBDII code P1B17 may require specialized knowledge and tools, so it is recommended to seek assistance from a qualified mechanic or a dealership specializing in hybrid/electric vehicles.

6. What are some common repair tips for addressing OBDII code P1B17?

- Common repair tips include checking and replacing the hybrid/electric vehicle battery if necessary, inspecting and repairing any damaged wiring in circuit 27, and resetting the fault codes after repairs are completed.

7. How much does it typically cost to fix OBDII code P1B17?

- The cost of fixing OBDII code P1B17 can vary depending on the extent of the damage and the specific repairs needed. It is advisable to obtain quotes from different repair shops or dealerships for an accurate estimate.

8. Can OBDII code P1B17 be a recurring issue?

- OBDII code P1B17 can be a recurring issue if the root cause of the problem is not properly addressed during repairs. Regular maintenance and timely diagnosis of any related issues can help prevent the code from reoccurring.

9. Are there any preventive measures to avoid triggering OBDII code P1B17?

- To prevent OBDII code P1B17, it is recommended to follow the manufacturer's maintenance schedule for the hybrid/electric vehicle system, avoid overloading the battery, and promptly address any warning signs of battery or circuit issues.

10. Can a low voltage condition in circuit 27 affect other systems in a hybrid/electric vehicle?

- Yes, a low voltage condition in circuit 27 can potentially impact other systems in a hybrid/electric vehicle, leading to issues with overall performance, battery health, and the safety of the vehicle.