AutoCodes – Cadillac – P1FE0 Cadillac

P1FE0 Cadillac Code - Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Circuit High Voltage

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: P1FE0 Cadillac indicates Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Circuit High Voltage.
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 783

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 P1FE0 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 P1FE0 Cadillac - Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Circuit High Voltage - AutoCodes.com — P1FE0 Cadillac Code - Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1FE0 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 P1FE0 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 P1FE0 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.

Need more information about the P1FE0 Cadillac code?

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Need Help with the Code?

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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 P1FE0 Cadillac Code

1. What are the common symptoms of OBDII code P1FE0 in a Cadillac hybrid vehicle?

The common symptoms of OBDII code P1FE0 include the check engine light turning on, reduced hybrid/EV performance, and potential issues with starting the vehicle.

2. What could cause the Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Circuit High Voltage in a Cadillac?

The P1FE0 code in a Cadillac hybrid vehicle can be caused by issues such as a faulty hybrid/EV battery interface control module, a malfunctioning voltage sensor, or wiring issues.

3. How serious is the OBDII code P1FE0 in a Cadillac hybrid car?

OBDII code P1FE0, indicating a high voltage sensor circuit in the Hybrid/EV Battery Interface Control Module 2, should be addressed promptly as it can affect the performance and efficiency of the hybrid system.

4. Can I continue driving my Cadillac with the P1FE0 code present?

It is not recommended to continue driving your Cadillac with the OBDII code P1FE0 present, as it can lead to further damage to the hybrid system and potentially compromise the vehicle's safety.

5. How can I diagnose and repair OBDII code P1FE0 in my Cadillac hybrid vehicle?

Diagnosing and repairing OBDII code P1FE0 requires specialized diagnostic equipment to pinpoint the exact cause, which may involve testing the hybrid/EV battery interface control module, voltage sensor, and related wiring for faults.

6. Are there any DIY tips for addressing the Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Circuit High Voltage issue?

Due to the complexity of hybrid vehicle systems, it is recommended to seek professional assistance for diagnosing and repairing OBDII code P1FE0 in a Cadillac hybrid car to ensure proper and safe resolution.

7. How much does it typically cost to fix the P1FE0 code in a Cadillac hybrid vehicle?

The cost of fixing OBDII code P1FE0 in a Cadillac hybrid vehicle can vary depending on the specific cause of the issue, but it may involve expenses for parts replacement, labor, and diagnostic services.

8. Can resetting the OBDII system clear the P1FE0 code in a Cadillac?

While resetting the OBDII system may temporarily clear the P1FE0 code, it is essential to address the underlying issue causing the fault code to prevent it from reoccurring and potentially causing further problems.

9. Is the Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Circuit High Voltage issue covered under Cadillac's warranty?

The coverage of the P1FE0 code under Cadillac's warranty depends on the vehicle's warranty status and the specific terms and conditions outlined in the warranty agreement.

10. How often does the Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Circuit High Voltage issue occur in Cadillac hybrid vehicles?

While the occurrence of the P1FE0 code can vary, it is a relatively uncommon issue in Cadillac hybrid vehicles that requires timely attention to prevent potential complications in the hybrid system.