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P1FF2 Cadillac Code - Hybrid/EV Battery Interface Control Module 10 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: P1FF2 Cadillac indicates Hybrid/EV Battery Interface Control Module 10 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 815

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 P1FF2 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 P1FF2 Cadillac - Hybrid/EV Battery Interface Control Module 10 Voltage Sensor Performance - AutoCodes.com — P1FF2 Cadillac Code - Hybrid/EV Battery Interface Control Module 10 Voltage Sensor Performance

What does this mean?

What are the Possible Causes of the DTC P1FF2 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 P1FF2 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 P1FF2 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 P1FF2 Cadillac Code

What does the OBDII code P1FF2 mean for my Cadillac?

The OBDII code P1FF2 indicates a problem with the Hybrid/EV Battery Interface Control Module, specifically related to the voltage sensor performance.

What are the common symptoms associated with the P1FF2 code?

Common symptoms include warning lights on the dashboard, reduced hybrid system performance, erratic battery charging, and possible engine performance issues.

What could cause the P1FF2 code to trigger?

Causes may include a faulty voltage sensor, wiring issues in the battery interface module, a malfunctioning Hybrid/EV Battery Interface Control Module, or poor connections.

How can I diagnose the P1FF2 code?

To diagnose the P1FF2 code, use an OBD-II scanner to read the code, inspect the battery interface module and wiring for damage, and test the voltage sensor for proper operation.

What are some repair tips for fixing the P1FF2 code?

Repair tips include checking and repairing any damaged wiring or connectors, replacing a faulty voltage sensor, and reprogramming or replacing the Hybrid/EV Battery Interface Control Module if necessary.

Can I drive my Cadillac with the P1FF2 code?

While it may be possible to drive the vehicle, it is not recommended, as it can lead to further damage to the hybrid system or reduced performance.

Is it safe to clear the P1FF2 code without making repairs?

Clearing the code without addressing the underlying issue is not safe, as the problem may persist and could lead to more significant damage or safety concerns.

How much does it typically cost to repair the P1FF2 code?

Repair costs can vary widely depending on the specific issue, but it may range from a few hundred dollars for sensor replacement to over a thousand for module replacement or extensive wiring repairs.

Should I take my Cadillac to a dealership for P1FF2 repairs?

While dealerships have access to specific diagnostic tools and expertise, independent mechanics experienced with hybrid vehicles can also effectively diagnose and repair the P1FF2 code.