AutoCodes – GMC – P1FD8 GMC

P1FD8 GMC Code - Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit Low 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: P1FD8 GMC indicates Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit Low 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 748

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 P1FD8 GMC 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 P1FD8 GMC - Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit Low Voltage - AutoCodes.com — P1FD8 GMC Code - Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1FD8 GMC?

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 P1FD8 GMC?

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 P1FD8 GMC 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 P1FD8 GMC 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 P1FD8 GMC Code

1. What are the common symptoms of OBDII code P1FD8 in a GMC vehicle?

The common symptoms of OBDII code P1FD8 in a GMC vehicle may include poor fuel economy, reduced engine performance, and the illumination of the check engine light.

2. What does the OBDII code P1FD8 in a GMC indicate?

OBDII code P1FD8 in a GMC indicates a low voltage condition in the Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit.

3. What are the possible causes of OBDII code P1FD8 appearing in a GMC?

The possible causes of OBDII code P1FD8 in a GMC include a faulty Hybrid/EV Battery Interface Control Module, damaged wiring or connectors in the voltage sensor circuit, or a weak battery.

4. How can I diagnose the OBDII code P1FD8 in my GMC?

Diagnosing OBDII code P1FD8 in your GMC typically involves using a diagnostic scanner to retrieve the code, inspecting the Hybrid/EV Battery Interface Control Module and its connections, and testing the voltage sensor circuit for proper voltage levels.

5. Can I continue driving my GMC with OBDII code P1FD8 present?

It is not recommended to continue driving your GMC with OBDII code P1FD8 present, as it can lead to further damage to the hybrid or electric vehicle system.

6. How can I repair OBDII code P1FD8 in my GMC?

Repairing OBDII code P1FD8 in your GMC may involve replacing the Hybrid/EV Battery Interface Control Module, repairing or replacing damaged wiring or connectors, or addressing any underlying battery issues.

7. Is it safe to reset the OBDII code P1FD8 in my GMC using a diagnostic scanner?

While resetting the OBDII code P1FD8 using a diagnostic scanner may temporarily turn off the check engine light, it is important to diagnose and address the root cause of the issue to prevent further problems.

8. How much does it cost to repair OBDII code P1FD8 in a GMC?

The cost of repairing OBDII code P1FD8 in a GMC can vary depending on the exact cause of the issue, the extent of the repairs needed, and the labor rates of the repair shop. It is recommended to obtain quotes from different mechanics.

9. Can a DIY enthusiast fix OBDII code P1FD8 in a GMC?

While some DIY enthusiasts may have the skills to diagnose and repair OBDII code P1FD8 in a GMC, it is a complex issue related to hybrid and electric vehicle systems. It is recommended to seek professional help if unsure.

10. How can I prevent OBDII code P1FD8 from occurring in my GMC in the future?

To prevent OBDII code P1FD8 from occurring in your GMC in the future, it is essential to maintain your vehicle's hybrid or electric system regularly, address any battery issues promptly, and follow the manufacturer's maintenance recommendations.