AutoCodes – GMC – P1FF1 GMC

P1FF1 GMC Code - Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Performance

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: P1FF1 GMC indicates Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Performance.
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 849

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 P1FF1 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 P1FF1 GMC - Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Performance - AutoCodes.com — P1FF1 GMC Code - Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Performance

What does this mean?

What are the Possible Causes of the DTC P1FF1 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 P1FF1 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 P1FF1 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.

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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 P1FF1 GMC Code

1. What are common symptoms of OBDII code P1FF1 in a GMC related to the Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Performance?

- Common symptoms include reduced hybrid system performance, warning lights on the dashboard, and potential issues with battery charging.

2. What are the possible causes of OBDII code P1FF1 GMC related to the Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Performance?

- Causes may include faulty voltage sensor, wiring issues, poor connections, or problems with the hybrid battery interface control module.

3. How can I diagnose OBDII code P1FF1 in my GMC indicating an issue with the Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Performance?

- Diagnosis involves using a diagnostic scanner to read the code, checking the voltage sensor and related wiring, and conducting tests on the battery interface control module.

4. Can I continue driving my GMC with OBDII code P1FF1 related to the Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Performance?

- It is not recommended to continue driving the vehicle with this code as it can lead to further damage to the hybrid system. Immediate attention and repair are advised.

5. What are some repair tips for fixing OBDII code P1FF1 in a GMC with issues in the Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Performance?

- Repair tips may include checking and repairing wiring connections, replacing the faulty voltage sensor, and resetting the fault code after repairs are completed.

6. Is it possible to reset OBDII code P1FF1 GMC related to the Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Performance without making any repairs?

- It is not recommended to simply reset the code without addressing the underlying issue, as it may lead to recurring problems and potential safety hazards.

7. How much does it typically cost to repair OBDII code P1FF1 in a GMC due to problems with the Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Performance?

- The cost of repair can vary depending on the specific issue, but it may involve parts replacement, labor costs, and diagnostic fees. It is advisable to consult a professional for an accurate estimate.

8. Are there any preventative measures to avoid encountering OBDII code P1FF1 related to the Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Performance in a GMC?

- Regular maintenance of the hybrid system, including inspections of wiring and sensors, can help prevent issues that may trigger this fault code.

9. Can a DIY enthusiast with automotive knowledge repair OBDII code P1FF1 GMC indicating problems with the Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Performance?

- While some basic repairs such as checking connections can be done by DIY enthusiasts, diagnosing and repairing complex issues with the hybrid system may require specialized tools and expertise.

10. How long does it typically take to repair OBDII code P1FF1 related to the Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Performance in a GMC?

- The repair time can vary based on the extent of the issue and the availability of parts. It is recommended to consult a professional technician for a more accurate timeframe.