AutoCodes – Saturn – P1FDA Saturn

P1FDA Saturn Code - Hybrid/EV Battery Interface Control Module 6 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: P1FDA Saturn indicates Hybrid/EV Battery Interface Control Module 6 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 857

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 P1FDA 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 P1FDA Saturn - Hybrid/EV Battery Interface Control Module 6 Voltage Sensor Circuit Low Voltage - AutoCodes.com — P1FDA Saturn Code - Hybrid/EV Battery Interface Control Module 6 Voltage Sensor Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1FDA 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 P1FDA 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 P1FDA 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 P1FDA Saturn Code

1. What does OBDII code P1FDA mean on a Saturn vehicle?

P1FDA indicates a problem with the Hybrid/EV Battery Interface Control Module 6 Voltage Sensor Circuit, specifically detecting a low voltage condition.

2. What are the symptoms of code P1FDA in a Saturn?

Symptoms may include reduced hybrid/EV performance, warning lights on the dashboard (such as the check engine light or hybrid system warning), and possible decreased fuel economy.

3. What causes the P1FDA code to trigger?

Common causes include a faulty voltage sensor, damaged wiring or connectors in the circuit, a failing Hybrid/EV Battery Interface Control Module, or low voltage from the hybrid battery.

4. Can I drive with the P1FDA code present?

Driving with this code is not recommended, as it may lead to reduced vehicle performance or further damage to the hybrid/EV system.

5. How is the P1FDA code diagnosed?

A technician will use a scan tool to confirm the code, inspect the voltage sensor and associated wiring, test the hybrid battery voltage, and ensure the control module is functioning properly.

6. What repairs can fix the P1FDA code on a Saturn?

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

7. Is the hybrid battery likely to be the problem if P1FDA appears?

While the battery itself could contribute to the issue, the problem more commonly lies in the voltage sensor circuit or related components.

8. How much does it cost to fix the P1FDA code?

Costs vary depending on the issue, but sensor replacement typically ranges from $150 to $400, while control module replacements could cost $500 or more.

9. Can a weak 12V battery cause the P1FDA code?

A weak 12V battery is unlikely to directly trigger P1FDA, as it pertains to the hybrid/EV battery system, but a weak 12V battery can cause related system malfunctions.

10. How can I prevent the P1FDA code from recurring?

Regularly inspect and maintain the hybrid system components, ensure wiring and connectors are secure and undamaged, and address any hybrid system warnings promptly.