AutoCodes – Saturn – P1FD5 Saturn

P1FD5 Saturn 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 Saturn 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.

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Code Popularity 975

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

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 Saturn?

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 Saturn 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 P1FD5 Saturn Code

What does the OBDII code P1FD5 mean for a Saturn vehicle?

The OBDII code P1FD5 refers to a problem with the Hybrid/EV Battery Interface Control Module 1 Voltage Sensor Circuit, indicating that it is experiencing low voltage.

What are the common symptoms associated with code P1FD5?

Common symptoms include warning lights on the dashboard, reduced power from the hybrid system, and potential failure to start or operate in electric mode.

What could cause the P1FD5 code to trigger?

Causes may include a faulty voltage sensor, damaged wiring or connectors, issues with the hybrid battery, or a malfunctioning Battery Interface Control Module.

How can I diagnose the issue related to code P1FD5?

Diagnosing the issue typically involves using an OBDII scanner to confirm the code, inspecting wiring and connectors for damage, and checking the voltage readings from the battery and sensors.

What are some recommended repairs for the P1FD5 code?

Repairs may include replacing the faulty voltage sensor, repairing or replacing damaged wiring, or replacing the Battery Interface Control Module if it is determined to be malfunctioning.

Is it safe to drive a vehicle with the P1FD5 code?

It is generally not safe to drive a vehicle with this code, as it may lead to loss of hybrid functionality and could potentially cause further damage to the battery system.

Can I clear the P1FD5 code without fixing the issue?

You can clear the code using an OBDII scanner, but it is not recommended to do so without fixing the underlying issue, as the code will likely return and may cause further problems.

What tools do I need to troubleshoot the P1FD5 code?

You will need an OBDII scanner to read and clear codes, a multimeter to check voltage levels, and basic hand tools for inspecting and repairing wiring and connectors.

How much does it typically cost to repair the issue associated with code P1FD5?

Repair costs can vary widely depending on the specific cause, but replacing a voltage sensor may range from $100 to $500, while more extensive repairs, like replacing the Battery Interface Control Module, can be significantly higher.