AutoCodes – Cadillac – P1FD5 Cadillac

P1FD5 Cadillac Code - Hybrid/EV Battery Interface Control Module 1 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: P1FD5 Cadillac indicates Hybrid/EV Battery Interface Control Module 1 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 948

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1FD5 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 P1FD5 Cadillac - Hybrid/EV Battery Interface Control Module 1 Voltage Sensor Circuit Low Voltage - AutoCodes.com — P1FD5 Cadillac Code - Hybrid/EV Battery Interface Control Module 1 Voltage Sensor Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1FD5 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 P1FD5 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 P1FD5 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.

Need more information about the P1FD5 Cadillac code?

Need more information on how to fix the P1FD5 Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1FD5 Cadillac code diagnosed by a professional: Find a repair shop in your area

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 P1FD5 Cadillac Code

1. What are the common symptoms of OBDII code P1FD5 in a Cadillac hybrid/EV vehicle?

- Common symptoms may include reduced electric vehicle (EV) driving range, poor fuel economy, and potential drivability issues.

2. What could cause the Hybrid/EV Battery Interface Control Module 1 Voltage Sensor Circuit to show low voltage?

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

3. How can I diagnose the source of the low voltage in the Hybrid/EV Battery Interface Control Module 1?

- Use a multimeter to check the voltage sensor, inspect wiring and connectors for damage, and perform a battery load test to determine the health of the battery.

4. Is it safe to continue driving with the P1FD5 code present in my Cadillac hybrid/EV vehicle?

- It is not recommended to drive with this code present, as it can lead to further damage to the hybrid/EV system and compromise vehicle performance.

5. Can I reset the OBDII code P1FD5 in my Cadillac without addressing the underlying issue?

- While you can clear the code temporarily, it is important to address the root cause to prevent the code from reoccurring and ensure the vehicle operates properly.

6. What are some tips for repairing OBDII code P1FD5 in a Cadillac hybrid/EV vehicle?

- Start by checking the voltage sensor and its connections, inspect the battery system components, and consult a professional technician for further diagnosis and repair.

7. How much does it typically cost to repair the Hybrid/EV Battery Interface Control Module 1 Voltage Sensor Circuit low voltage issue?

- Repair costs can vary depending on the exact cause of the issue, but it may range from a few hundred to a few thousand dollars, including parts and labor.

8. Will the P1FD5 code cause my Cadillac hybrid/EV vehicle to fail an emissions test?

- Yes, the presence of this code may cause your vehicle to fail an emissions test, as it indicates a problem with the hybrid/EV system that can impact emissions.

9. Are there any preventive maintenance measures I can take to avoid encountering the P1FD5 trouble code in my Cadillac hybrid/EV?

- Regularly inspecting and maintaining the hybrid/EV battery system, ensuring proper charging habits, and addressing any warning signs promptly can help prevent this code from appearing.

10. Can a DIY enthusiast with automotive knowledge fix the P1FD5 code issue in a Cadillac hybrid/EV vehicle?

- While some basic troubleshooting steps can be taken, diagnosing and repairing the Hybrid/EV Battery Interface Control Module 1 Voltage Sensor Circuit issue may require specialized equipment and expertise, so consulting a professional is recommended.