AutoCodes – Cadillac – P1FED Cadillac

P1FED Cadillac Code - Hybrid/EV Battery Interface Control Module 5 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: P1FED Cadillac indicates Hybrid/EV Battery Interface Control Module 5 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 839

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 P1FED 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 P1FED Cadillac - Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance - AutoCodes.com — P1FED Cadillac Code - Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance

What does this mean?

What are the Possible Causes of the DTC P1FED 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 P1FED 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 P1FED 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 P1FED Cadillac Code

1. What are common symptoms of OBDII code P1FED in a Cadillac related to the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance?

- Common symptoms may include reduced hybrid system performance, illuminated warning lights such as the check engine light or hybrid system warning light, and potential issues with starting or charging the vehicle.

2. What are the possible causes of OBDII code P1FED in a Cadillac related to the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance?

- Possible causes may include a malfunctioning battery interface control module, a faulty voltage sensor, wiring or connection issues, or a problem with the hybrid/EV battery itself.

3. How can I diagnose the OBDII code P1FED in a Cadillac related to the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance?

- Diagnosis typically involves using a professional OBDII scanner to retrieve the specific code, conducting a thorough inspection of the hybrid/EV battery system components, and testing the voltage sensor for proper functionality.

4. Are there any safety precautions to keep in mind when dealing with OBDII code P1FED in a Cadillac related to the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance?

- Yes, it is important to work with high-voltage systems cautiously and follow manufacturer guidelines for handling hybrid/EV components to avoid the risk of electric shock or injury.

5. Can I repair OBDII code P1FED in a Cadillac related to the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance myself?

- While basic troubleshooting steps like checking connections and fuses can be done by DIY enthusiasts, diagnosing and repairing complex hybrid/EV system issues may require specialized training and equipment best handled by a professional technician.

6. What are the potential consequences of ignoring OBDII code P1FED in a Cadillac related to the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance?

- Ignoring this code can lead to further damage to the hybrid/EV system, reduced fuel efficiency, and potential safety risks due to improper functioning of critical components.

7. How much does it typically cost to repair OBDII code P1FED in a Cadillac related to the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance?

- Repair costs can vary depending on the specific issue causing the code, but it's advisable to budget for diagnostic fees, replacement parts, and labor costs which can range from a few hundred to over a thousand dollars.

8. Can a faulty Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance cause other issues in the vehicle?

- Yes, a malfunctioning voltage sensor can impact the overall performance of the hybrid/EV system, potentially leading to issues with battery charging, energy management, and hybrid system operation.