AutoCodes – Generic – P1FE5

P1FE5 Code - Hybrid/EV Battery Interface Control Module 7 Voltage Sensor Circuit High 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: P1FE5 indicates Hybrid/EV Battery Interface Control Module 7 Voltage Sensor Circuit High 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 1,218

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 P1FE5 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 P1FE5 - Hybrid/EV Battery Interface Control Module 7 Voltage Sensor Circuit High Voltage - AutoCodes.com — P1FE5 Code - Hybrid/EV Battery Interface Control Module 7 Voltage Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1FE5?

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 P1FE5?

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 P1FE5 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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Information for Specific Makes

P1FE5 Buick — Hybrid/EV Battery Interface Control Module 7 Voltage Sensor Circuit High Voltage
P1FE5 Cadillac — Hybrid/EV Battery Interface Control Module 7 Voltage Sensor Circuit High Voltage
P1FE5 Chevrolet — Hybrid/EV Battery Interface Control Module 7 Voltage Sensor Circuit High Voltage
P1FE5 GMC — Hybrid/EV Battery Interface Control Module 7 Voltage Sensor Circuit High Voltage
P1FE5 Saturn — Hybrid/EV Battery Interface Control Module 7 Voltage Sensor Circuit High Voltage

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 P1FE5 Code

1. What are the common symptoms of OBDII code P1FE5?

- Common symptoms include the illumination of the check engine light, reduced hybrid/EV performance, and potential drivability issues.

2. What could cause the Hybrid/EV Battery Interface Control Module 7 Voltage Sensor Circuit to show high voltage?

- Possible causes include a faulty voltage sensor, wiring issues, a malfunctioning battery interface control module, or a problem with the high voltage battery itself.

3. How can I diagnose the cause of OBDII code P1FE5?

- To diagnose this code, it is recommended to use a professional OBDII scanner to read the code and perform a thorough inspection of the voltage sensor circuit, battery interface control module, and associated wiring.

4. Can I continue driving my vehicle with OBDII code P1FE5?

- It is not recommended to continue driving your vehicle with this code present, as it can lead to further damage to the hybrid/EV system. It is best to address the issue promptly.

5. What are some repair tips for resolving OBDII code P1FE5?

- Repair tips may include checking and repairing any damaged wiring, replacing the faulty voltage sensor, diagnosing and addressing any issues with the battery interface control module, and ensuring proper connections.

6. Is it possible to reset OBDII code P1FE5 by disconnecting the battery?

- Disconnecting the battery may temporarily clear the code, but it is not a permanent solution. The underlying issue causing the high voltage sensor circuit fault needs to be addressed for a lasting repair.

7. How much does it typically cost to repair OBDII code P1FE5?

- The cost of repairing this code can vary depending on the specific issue causing the fault. It is recommended to consult with a professional mechanic or dealership for an accurate diagnosis and repair estimate.

8. Can a DIY enthusiast repair OBDII code P1FE5 at home?

- While some skilled DIY enthusiasts may be able to diagnose and repair simple wiring issues related to this code, the complexity of the hybrid/EV system may require specialized knowledge and equipment best handled by a professional technician.

9. How long does it take to fix OBDII code P1FE5?

- The repair time for this code can vary based on the root cause of the issue. Simple fixes like repairing a wiring issue may take less time, while diagnosing and replacing a faulty battery interface control module could be more time-consuming.

10. Will OBDII code P1FE5 affect the overall performance of my hybrid/EV vehicle?

- Yes, this code can impact the performance of your hybrid/EV vehicle by potentially reducing efficiency, power delivery, and overall drivability. It is essential to address the issue promptly to ensure optimal system performance.