AutoCodes – Generic – P1BAD

P1BAD Code - Hybrid/Electric Vehicle Battery 67 Circuit High 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: P1BAD indicates Hybrid/Electric Vehicle Battery 67 Circuit High 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.

Save to My Repairs My Repairs

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

Code Popularity 1,065

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 P1BAD 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 P1BAD - Hybrid/Electric Vehicle Battery 67 Circuit High Voltage - AutoCodes.com — P1BAD Code - Hybrid/Electric Vehicle Battery 67 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BAD?

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

How to Fix the DTC P1BAD?

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 P1BAD 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 P1BAD code?

Need more information on how to fix the P1BAD code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1BAD code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1BAD Buick — Hybrid/Electric Vehicle Battery 67 Circuit High Voltage
P1BAD Cadillac — Hybrid/Electric Vehicle Battery 67 Circuit High Voltage
P1BAD Chevrolet — Hybrid/Electric Vehicle Battery 67 Circuit High Voltage
P1BAD GMC — Hybrid/Electric Vehicle Battery 67 Circuit High Voltage
P1BAD Saturn — Hybrid/Electric Vehicle Battery 67 Circuit High 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 P1BAD Code

1. What are common symptoms of OBDII code P1BAD related to Hybrid/Electric Vehicle Battery 67 Circuit High Voltage?

- Common symptoms include reduced fuel efficiency, loss of power, and potentially a warning light on the dashboard.

2. What are the possible causes of OBDII code P1BAD indicating Hybrid/Electric Vehicle Battery 67 Circuit High Voltage?

- Possible causes may include a faulty high-voltage battery pack, damaged wiring or connectors, or issues with the battery control module.

3. How can I diagnose OBDII code P1BAD in relation to Hybrid/Electric Vehicle Battery 67 Circuit High Voltage?

- Diagnosis typically involves using a scan tool to read the code, inspecting the battery pack and related components, and testing the wiring for continuity and voltage levels.

4. Is it safe to continue driving with OBDII code P1BAD for Hybrid/Electric Vehicle Battery 67 Circuit High Voltage?

- It is not recommended to drive with this code active, as it can indicate potential safety hazards related to the high-voltage system of the vehicle.

5. What are the repair options for OBDII code P1BAD concerning Hybrid/Electric Vehicle Battery 67 Circuit High Voltage?

- Repair options may include replacing the high-voltage battery pack, repairing or replacing damaged wiring, or reprogramming the battery control module.

6. Can OBDII code P1BAD be triggered by a software glitch in the vehicle's system?

- Yes, software glitches in the battery control module or other related systems can sometimes trigger this code erroneously.

7. How can I prevent OBDII code P1BAD related to Hybrid/Electric Vehicle Battery 67 Circuit High Voltage from recurring?

- Regular maintenance of the high-voltage system, including checking for loose connections and ensuring proper cooling, can help prevent this code from recurring.

8. Are there any safety precautions to take when working on issues related to OBDII code P1BAD and Hybrid/Electric Vehicle Battery 67 Circuit High Voltage?

- Yes, always follow manufacturer guidelines for working on high-voltage systems, wear appropriate safety gear, and consider disconnecting the battery before performing any repairs.

9. Can a DIY enthusiast with some automotive knowledge repair OBDII code P1BAD linked to Hybrid/Electric Vehicle Battery 67 Circuit High Voltage?

- While some basic troubleshooting can be done, due to the high-voltage nature of the system, it is recommended to seek professional help for proper diagnosis and repair.

10. Will resetting the OBDII code P1BAD for Hybrid/Electric Vehicle Battery 67 Circuit High Voltage make the issue go away?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the code to appear. Proper diagnosis and repair are necessary.