AutoCodes – Cadillac – P1BAD Cadillac

P1BAD Cadillac 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 Cadillac 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.

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Code Popularity 921

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

What does this mean?

What are the Possible Causes of the DTC P1BAD Cadillac?

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

How to Fix the DTC P1BAD Cadillac?

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 Cadillac 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 P1BAD Cadillac Code

What does the OBDII code P1BAD mean for a Cadillac vehicle?

The OBDII code P1BAD indicates a problem with the hybrid/electric vehicle battery, specifically that the 67 circuit is experiencing high voltage issues.

What are the common symptoms associated with the P1BAD code?

Common symptoms may include reduced hybrid system performance, warning lights on the dashboard, and potential issues with battery charging or discharging.

What could cause the P1BAD code to trigger?

Possible causes include a faulty battery pack, damaged wiring or connectors within the high voltage system, or a malfunctioning battery management system.

How can I diagnose the P1BAD code?

To diagnose the P1BAD code, use an OBDII scanner to confirm the code and check for additional codes. Inspect the battery connections, wiring, and any related components for damage or corrosion.

What repairs are typically needed for a vehicle with the P1BAD code?

Repairs may involve replacing damaged wiring, connectors, or components in the battery management system, or potentially replacing the hybrid battery itself if it is found to be faulty.

Is it safe to drive a vehicle with the P1BAD code?

It is not recommended to drive the vehicle if the P1BAD code is present, as it may indicate a serious issue with the battery system that could lead to further complications.

How can I prevent the P1BAD code from occurring?

Regular maintenance, including battery system inspections and ensuring connections are clean and secure, can help prevent issues that lead to the P1BAD code.

Can I clear the P1BAD code from the OBDII system?

Yes, you can clear the P1BAD code using an OBDII scanner, but it's important to address the underlying issue to prevent the code from reappearing.

What should I do if the P1BAD code returns after clearing it?

If the P1BAD code returns, it is advisable to have the vehicle inspected by a qualified technician to diagnose and fix the underlying problem with the hybrid battery system.