AutoCodes – Generic – P1FDC

P1FDC Code - Hybrid/EV Battery Interface Control Module 8 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: P1FDC indicates Hybrid/EV Battery Interface Control Module 8 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 1,231

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 P1FDC 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 P1FDC - Hybrid/EV Battery Interface Control Module 8 Voltage Sensor Circuit Low Voltage - AutoCodes.com — P1FDC Code - Hybrid/EV Battery Interface Control Module 8 Voltage Sensor Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1FDC?

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 P1FDC?

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 P1FDC 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 P1FDC code?

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Information for Specific Makes

P1FDC Buick — Hybrid/EV Battery Interface Control Module 8 Voltage Sensor Circuit Low Voltage
P1FDC Cadillac — Hybrid/EV Battery Interface Control Module 8 Voltage Sensor Circuit Low Voltage
P1FDC Chevrolet — Hybrid/EV Battery Interface Control Module 8 Voltage Sensor Circuit Low Voltage
P1FDC GMC — Hybrid/EV Battery Interface Control Module 8 Voltage Sensor Circuit Low Voltage
P1FDC Saturn — Hybrid/EV Battery Interface Control Module 8 Voltage Sensor Circuit Low Voltage

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 P1FDC Code

1. What are the common symptoms of OBDII code P1FDC?

- Common symptoms include a check engine light, reduced fuel efficiency, poor vehicle performance, and potential issues with the hybrid or electric powertrain.

2. What does the OBDII code P1FDC indicate?

- OBDII code P1FDC indicates a low voltage condition in the Hybrid/EV Battery Interface Control Module 8 Voltage Sensor Circuit.

3. What are the possible causes of the Hybrid/EV Battery Interface Control Module 8 Voltage Sensor Circuit low voltage issue?

- Possible causes include a faulty battery sensor, damaged wiring or connectors, low battery voltage, or issues with the hybrid or electric battery system.

4. How can I diagnose the cause of OBDII code P1FDC?

- Diagnosis typically involves using a scan tool to read the code and checking the voltage sensor circuit for any faults or abnormalities. It may also require testing the battery and related components.

5. Can I continue driving with OBDII code P1FDC present?

- It is not recommended to continue driving with OBDII code P1FDC present, as it can lead to further damage to the hybrid or electric powertrain components.

6. How is the Hybrid/EV Battery Interface Control Module 8 Voltage Sensor Circuit low voltage issue repaired?

- Repairing the issue may involve replacing the faulty battery sensor, repairing damaged wiring or connectors, ensuring proper battery voltage, or addressing any underlying issues with the battery system.

7. Are there any DIY tips for addressing OBDII code P1FDC?

- DIY tips may include checking the battery connections, inspecting wiring for damage, and ensuring the battery voltage is within the recommended range. However, complex repairs may require professional assistance.

8. What are the potential dangers of ignoring OBDII code P1FDC?

- Ignoring OBDII code P1FDC can lead to further damage to the hybrid or electric powertrain components, reduced fuel efficiency, and potential safety hazards while driving.

9. Can a low voltage condition in the Hybrid/EV Battery Interface Control Module 8 Voltage Sensor Circuit affect vehicle performance?

- Yes, a low voltage condition in this circuit can affect vehicle performance by disrupting the proper functioning of the hybrid or electric powertrain components.

10. How can I prevent OBDII code P1FDC from recurring in the future?

- Regular maintenance of the hybrid or electric battery system, including checking battery voltage and ensuring proper connections, can help prevent the recurrence of OBDII code P1FDC.