AutoCodes – GMC – P1FEA GMC

P1FEA GMC Code - Hybrid/EV Battery Interface Control Module 2 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: P1FEA GMC indicates Hybrid/EV Battery Interface Control Module 2 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 864

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 P1FEA 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 P1FEA GMC - Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Performance - AutoCodes.com — P1FEA GMC Code - Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Performance

What does this mean?

What are the Possible Causes of the DTC P1FEA 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 P1FEA 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 P1FEA 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 P1FEA GMC Code

1. What are the common symptoms of OBDII code P1FEA GMC related to Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Performance?

- Common symptoms include poor fuel efficiency, loss of power, difficulty starting the vehicle, and illuminated warning lights on the dashboard.

2. What can cause the OBDII code P1FEA GMC to be triggered in relation to Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Performance?

- The code can be triggered by issues such as a faulty voltage sensor, damaged wiring or connectors, low battery voltage, or a malfunctioning Hybrid/EV Battery Interface Control Module 2.

3. How can I diagnose the OBDII code P1FEA GMC for Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Performance issues?

- Diagnosis typically involves using a diagnostic scanner to retrieve the code, checking the system for any visible damage, testing the voltage sensor and related components, and inspecting the wiring for any issues.

4. What are some repair tips for addressing OBDII code P1FEA GMC related to Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Performance?

- Repair tips may include replacing the faulty voltage sensor, repairing or replacing damaged wiring or connectors, ensuring proper battery voltage, and reprogramming or replacing the Hybrid/EV Battery Interface Control Module 2 if necessary.

5. Can driving with the OBDII code P1FEA GMC related to Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Performance cause further damage to the vehicle?

- Continuing to drive with this code present can potentially lead to further damage to the vehicle's hybrid or electric components, decreased performance, and even safety risks. It is recommended to address the issue promptly.

6. Is it safe to attempt DIY repairs for the OBDII code P1FEA GMC related to Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Performance?

- While some basic inspections and repairs can be done by DIY enthusiasts, it is recommended to consult with a professional mechanic or specialized technician for accurate diagnosis and proper repair of hybrid/EV systems.

7. How much can I expect to pay for repairs related to the OBDII code P1FEA GMC and Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Performance?

- Repair costs can vary depending on the exact cause of the issue, the extent of the damage, and labor rates in your area. It's advisable to obtain quotes from reputable repair shops for an accurate estimate.