AutoCodes – Cadillac – P1FEB Cadillac

P1FEB Cadillac Code - Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Performance

Quick Answer

The hybrid battery contains 192 individual cells. Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module circuit poor electrical connection. 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: P1FEB Cadillac indicates Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Performance.
Common causes: Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module circuit poor electrical connection.
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 794

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 Apr 27, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1FEB Cadillac Description

The hybrid battery contains 192 individual cells. Two cells are welded together in parallel and called a cell group. There are a total of 96 cell groups in the hybrid battery 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 cell groups are joined to form 3 distinct sections. The first 24 battery cell groups make up battery section 1. This section is adjacent to the cowl and contains battery cell groups 73 through 96. The next 28 battery cell groups make up battery section 2. This section is located behind section 1 and contains battery cell groups 45 through 72. The transverse battery section is section number 3 and it contains the remaining 44 battery cell groups 1 through 44. The battery sections also contain two temperature sensors, with one sensor located at each end of the section.
The battery energy control module monitors the voltage of the 96 battery cell groups. The voltage sense lines are attached to each individual cell group, and these sense lines terminate at a connector located on the top surface of the battery section. A voltage sense harness joins this connector to the battery energy control module.
The battery energy control module contains internal interface control modules that monitor specific cell groups.
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 the hybrid powertrain control module 2 through serial data. The hybrid powertrain control module 2 is the host controller for diagnostic trouble code information.

OBDII Code P1FEB Cadillac - Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Performance - AutoCodes.com — P1FEB Cadillac Code - Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Performance

What does this mean?

What are the Possible Causes of the DTC P1FEB Cadillac?

Faulty Hybrid/EV Battery Interface Control Module
Hybrid/EV Battery Interface Control Module harness is open or shorted
Hybrid/EV Battery Interface Control Module circuit poor electrical connection

How to Fix the DTC P1FEB 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 P1FEB 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 P1FEB Cadillac Code

1. What are the common symptoms of OBDII code P1FEB in a Cadillac Hybrid/EV vehicle?

- Common symptoms include poor fuel efficiency, reduced vehicle power, and potential issues with the hybrid or electric powertrain.

2. What can cause the OBDII code P1FEB to trigger in a Cadillac Hybrid/EV vehicle?

- The code may be triggered by a faulty Hybrid/EV Battery Interface Control Module 3 Voltage Sensor, wiring issues, or problems with the high voltage battery system.

3. How can I diagnose the cause of OBDII code P1FEB in my Cadillac Hybrid/EV vehicle?

- Diagnosis typically involves checking the voltage sensor readings, inspecting the wiring harness for damage, and testing the hybrid battery system for proper function.

4. Can I continue driving my Cadillac with the OBDII code P1FEB present?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the hybrid or electric powertrain components.

5. How can I repair OBDII code P1FEB in a Cadillac Hybrid/EV vehicle?

- Repair may involve replacing the Hybrid/EV Battery Interface Control Module 3 Voltage Sensor, repairing any damaged wiring, and resetting the fault code with a diagnostic tool.

6. Is it safe to attempt repairs on the high voltage components related to OBDII code P1FEB?

- Working on high voltage components requires specialized training and equipment. It is recommended to have repairs done by a qualified technician familiar with hybrid and electric vehicles.

7. Can a simple reset of the fault code fix OBDII code P1FEB in a Cadillac Hybrid/EV vehicle?

- While resetting the fault code may temporarily clear the warning light, it is important to address the underlying issue causing the code to prevent further problems.

8. How do I prevent OBDII code P1FEB from recurring in my Cadillac Hybrid/EV vehicle?

- Regular maintenance of the hybrid or electric powertrain components, such as checking the voltage sensors and wiring, can help prevent the code from recurring.

9. Are there any recalls or technical service bulletins related to OBDII code P1FEB in Cadillac Hybrid/EV vehicles?

- It is recommended to check with the manufacturer or authorized dealerships for any recalls or technical service bulletins related to this specific OBDII code in Cadillac vehicles.

10. Can OBDII code P1FEB affect the overall performance of my Cadillac Hybrid/EV vehicle?

- Yes, this code can impact the performance and efficiency of the hybrid or electric powertrain system, leading to reduced power output and fuel economy.