AutoCodes – Saturn – P1FDF Saturn

P1FDF Saturn Code - Hybrid/EV Battery Interface Control Module 1 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: P1FDF Saturn indicates Hybrid/EV Battery Interface Control Module 1 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 739

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 P1FDF 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 P1FDF Saturn - Hybrid/EV Battery Interface Control Module 1 Voltage Sensor Circuit High Voltage - AutoCodes.com — P1FDF Saturn Code - Hybrid/EV Battery Interface Control Module 1 Voltage Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1FDF 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 P1FDF 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 P1FDF 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 P1FDF Saturn Code

What does OBDII code P1FDF mean?

OBDII code P1FDF indicates a high voltage issue in the Hybrid/EV Battery Interface Control Module 1 voltage sensor circuit in a Saturn vehicle.

What are the common symptoms of P1FDF?

Common symptoms include warning lights on the dashboard, reduced power or performance, and potential issues with the vehicle's hybrid or electric system.

What could cause the P1FDF code to trigger?

Causes may include a malfunctioning voltage sensor, damaged wiring or connectors, or issues within the Hybrid/EV Battery Interface Control Module itself.

How can I diagnose the P1FDF code?

Start by using an OBD-II scanner to confirm the code. Inspect the wiring and connectors for damage, and test the voltage sensor for proper operation.

Can I drive my vehicle with the P1FDF code?

It is not recommended to drive the vehicle with this code as it may lead to further damage to the hybrid system or reduced vehicle performance.

What are the common repair solutions for P1FDF?

Repairs may include replacing the faulty voltage sensor, repairing damaged wiring or connectors, or reprogramming or replacing the Hybrid/EV Battery Interface Control Module.

How much will it cost to fix the P1FDF code?

Repair costs can vary widely depending on the specific issue but may range from $100 to $1,000 or more, especially if module replacement is needed.

Is it safe to clear the P1FDF code without repairs?

Clearing the code without addressing the underlying issue is not safe, as the problem may persist and could lead to further complications.

Will my warranty cover repairs for the P1FDF code?

If your vehicle is still under warranty, repairs related to the P1FDF code may be covered, but you should check your specific warranty details.

How can I prevent the P1FDF code from occurring?

Regular maintenance of the hybrid system, prompt attention to warning lights, and ensuring connections and wiring are in good condition can help prevent this code from occurring.