AutoCodes – Chevrolet – P1FDF Chevrolet

P1FDF Chevrolet Code - Hybrid/EV Battery Interface Control Module 1 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: P1FDF Chevrolet indicates Hybrid/EV Battery Interface Control Module 1 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 786

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 P1FDF Chevrolet 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 P1FDF Chevrolet - Hybrid/EV Battery Interface Control Module 1 Voltage Sensor Circuit High Voltage - AutoCodes.com — P1FDF Chevrolet Code - Hybrid/EV Battery Interface Control Module 1 Voltage Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1FDF Chevrolet?

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 P1FDF Chevrolet?

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 P1FDF Chevrolet 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 P1FDF Chevrolet Code

1. What are common symptoms of OBDII code P1FDF in a Chevrolet hybrid/EV vehicle?

The common symptoms of OBDII code P1FDF include the check engine light coming on, reduced fuel efficiency, and potential issues with the hybrid/EV battery system.

2. What causes OBDII code P1FDF in a Chevrolet hybrid/EV vehicle?

OBDII code P1FDF is usually triggered by a high voltage reading detected by the Hybrid/EV Battery Interface Control Module 1 Voltage Sensor. This can be caused by a faulty voltage sensor, wiring issues, or problems with the hybrid/EV battery system.

3. How can I diagnose OBDII code P1FDF in my Chevrolet hybrid/EV vehicle?

Diagnosing OBDII code P1FDF typically involves using a scan tool to read the code and check the voltage sensor readings. It's important to inspect the wiring and connectors related to the voltage sensor and the hybrid/EV battery system.

4. What are the repair options for OBDII code P1FDF in a Chevrolet hybrid/EV vehicle?

Repair options for OBDII code P1FDF may include replacing the faulty voltage sensor, repairing any damaged wiring or connectors, or addressing issues with the hybrid/EV battery system. It's recommended to consult a professional mechanic for proper diagnosis and repair.

5. Can I continue driving my Chevrolet with OBDII code P1FDF?

It is not recommended to continue driving your Chevrolet with OBDII code P1FDF present. Ignoring this code could lead to further damage to the hybrid/EV battery system and potentially affect the vehicle's performance and safety.

6. How serious is OBDII code P1FDF in a Chevrolet hybrid/EV vehicle?

OBDII code P1FDF should be taken seriously as it indicates a high voltage condition in the Hybrid/EV Battery Interface Control Module 1 Voltage Sensor Circuit. Ignoring this code could lead to potential safety hazards and further damage to the vehicle's electrical system.

7. Is it safe to reset OBDII code P1FDF in a Chevrolet hybrid/EV vehicle?

Resetting OBDII code P1FDF may temporarily turn off the check engine light, but it will not fix the underlying issue causing the high voltage reading. It's important to diagnose and repair the problem to ensure the vehicle's proper functioning.

8. How can I prevent OBDII code P1FDF from appearing in my Chevrolet hybrid/EV vehicle?

To prevent OBDII code P1FDF, it's important to regularly maintain your vehicle's hybrid/EV battery system, including checking the voltage sensor, wiring, and connectors for any signs of wear or damage. Following the manufacturer's maintenance schedule can help prevent this code from appearing.

9. Can extreme weather conditions trigger OBDII code P1FDF in a Chevrolet hybrid/EV vehicle?

Extreme weather conditions, such as very hot or cold temperatures, can potentially affect the performance of the hybrid/EV battery system and trigger OBDII code P1FDF. It's important to monitor your vehicle's battery system during extreme weather to prevent issues.

10. Is OBDII code P1FDF covered under any Chevrolet warranty?

The coverage of OBDII code P1FDF under a Chevrolet warranty may vary depending on the specific warranty terms and conditions. It's recommended to check your vehicle's warranty documentation or consult with a Chevrolet dealership for more information on coverage for this code.