AutoCodes – Cadillac – P1FD6 Cadillac

P1FD6 Cadillac Code - Hybrid/EV Battery Interface Control Module 2 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: P1FD6 Cadillac indicates Hybrid/EV Battery Interface Control Module 2 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 744

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 P1FD6 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 P1FD6 Cadillac - Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Circuit Low Voltage - AutoCodes.com — P1FD6 Cadillac Code - Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1FD6 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 P1FD6 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 P1FD6 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 P1FD6 Cadillac Code

1. What are the common symptoms of OBDII code P1FD6 in a Cadillac Hybrid/EV vehicle?

- Common symptoms include reduced fuel efficiency, poor performance, and potential drivability issues.

2. What can cause the Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Circuit Low Voltage code to trigger?

- The code P1FD6 can be triggered by a faulty voltage sensor, damaged wiring, or issues with the Hybrid/EV battery interface control module.

3. How can I diagnose the cause of OBDII code P1FD6 in my Cadillac Hybrid/EV vehicle?

- Diagnosing this code often involves checking the voltage sensor, inspecting the wiring for damage, and testing the Hybrid/EV battery interface control module.

4. Is it safe to continue driving my Cadillac with the P1FD6 code present?

- It is not recommended to drive your vehicle with the P1FD6 code present, as it may lead to further damage and potentially unsafe driving conditions.

5. Can I repair the Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Circuit Low Voltage issue myself?

- While some DIY enthusiasts may attempt to troubleshoot this issue, it is recommended to seek assistance from a professional mechanic with experience in hybrid/EV systems.

6. What are some tips for preventing the recurrence of the P1FD6 code in my Cadillac Hybrid/EV vehicle?

- Regularly inspecting and maintaining the hybrid/EV system components, such as the voltage sensor and control module, can help prevent the recurrence of this code.

7. How much does it typically cost to repair the Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Circuit Low Voltage issue?

- Repair costs for the P1FD6 code can vary depending on the underlying cause and the labor rates of the repair facility. It is best to obtain quotes from multiple sources.

8. Can a low battery voltage in a Cadillac Hybrid/EV vehicle cause the P1FD6 code to appear?

- Yes, a low battery voltage can be a contributing factor to triggering the P1FD6 code, as it may affect the proper functioning of the voltage sensor circuit.

9. Are there any recalls or technical service bulletins related to the P1FD6 code in Cadillac Hybrid/EV models?

- It is advisable to check with your local Cadillac dealership or visit the NHTSA website to see if there are any relevant recalls or technical service bulletins for this issue.

10. Will resetting the OBDII code P1FD6 clear the underlying problem in my Cadillac Hybrid/EV vehicle?

- Simply resetting the code may temporarily clear the warning light, but it will not fix the root cause of the issue. It is essential to diagnose and address the underlying problem to prevent future occurrences of the code.