AutoCodes – Generic – P1FFD

P1FFD Code - Hybrid/EV Battery Pack Coolant Level Sensor Circuit High Voltage

Quick Answer

The hybrid/EV battery pack coolant system has a level sensor. Common causes include Faulty Hybrid/EV Powertrain Control Module 2, Hybrid/EV Powertrain Control Module 2 harness is open or shorted, Hybrid/EV Powertrain Control Module 2 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: P1FFD indicates Hybrid/EV Battery Pack Coolant Level Sensor Circuit High Voltage.
Common causes: Common causes include Faulty Hybrid/EV Powertrain Control Module 2, Hybrid/EV Powertrain Control Module 2 harness is open or shorted, Hybrid/EV Powertrain Control Module 2 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 4,761

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 P1FFD Description

The hybrid/EV battery pack coolant system has a level sensor. The hybrid/EV battery pack coolant level sensor is attached to the coolant surge tank. The level sensor is a 2 state bi-metallic reed switch which changes state when the switch reed is exposed to magnetism. The level of the hybrid/EV battery pack coolant in the surge tank causes a magnet-equipped float to move towards and away from the sensor as coolant level decreases or increases. The hybrid/EV powertrain control module 2 supplies 5 V to the signal circuit and a ground for the low reference circuit. The hybrid/EV battery pack coolant level sensor resistance decreases when the battery coolant level in the surge tank gets low. The hybrid/EV powertrain control module 2 uses the hybrid/EV battery pack coolant level sensor to determine if the hybrid/EV battery pack coolant system is low on coolant.

OBDII Code P1FFD - Hybrid/EV Battery Pack Coolant Level Sensor Circuit High Voltage - AutoCodes.com — P1FFD Code - Hybrid/EV Battery Pack Coolant Level Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1FFD?

Faulty Hybrid/EV Powertrain Control Module 2
Hybrid/EV Powertrain Control Module 2 harness is open or shorted
Hybrid/EV Powertrain Control Module 2 circuit poor electrical connection

How to Fix the DTC P1FFD?

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 P1FFD 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

P1FFD Buick — Hybrid/EV Battery Pack Coolant Level Sensor Circuit High Voltage
P1FFD Cadillac — Hybrid/EV Battery Pack Coolant Level Sensor Circuit High Voltage
P1FFD Chevrolet — Hybrid/EV Battery Pack Coolant Level Sensor Circuit High Voltage
P1FFD GMC — Hybrid/EV Battery Pack Coolant Level Sensor Circuit High Voltage
P1FFD Saturn — Hybrid/EV Battery Pack Coolant Level 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 P1FFD Code

1. What are the common symptoms of OBDII code P1FFD related to the Hybrid/EV Battery Pack Coolant Level Sensor Circuit High Voltage?

- Common symptoms may include the illumination of the check engine light, reduced hybrid/EV system performance, and potential warnings indicating an issue with the battery coolant level.

2. What are the possible causes of OBDII code P1FFD indicating a High Voltage in the Hybrid/EV Battery Pack Coolant Level Sensor Circuit?

- Possible causes may include a faulty battery coolant level sensor, issues with the coolant level sensor circuit, wiring or connector problems, or an internal fault within the hybrid/EV battery pack.

3. How can I diagnose the root cause of OBDII code P1FFD related to the Hybrid/EV Battery Pack Coolant Level Sensor Circuit High Voltage?

- Diagnosis typically involves using a professional OBDII scanner to read the code, inspecting the battery coolant level sensor and its connections, checking for any visible wiring issues, and performing necessary tests to pinpoint the fault.

4. Can a DIY enthusiast repair OBDII code P1FFD indicating a High Voltage in the Hybrid/EV Battery Pack Coolant Level Sensor Circuit?

- Repairing this issue may require advanced knowledge and specialized tools. It is recommended to consult with a qualified technician or dealership experienced in hybrid/EV systems to accurately diagnose and repair the problem.

5. Are there any safety precautions to consider when dealing with the Hybrid/EV Battery Pack Coolant Level Sensor Circuit High Voltage issue?

- Safety precautions include disconnecting the high-voltage system properly before attempting any repairs, following manufacturer guidelines, and wearing appropriate personal protective equipment when working around hybrid/EV components.

6. What role does the coolant level sensor play in the Hybrid/EV Battery Pack, and why is it important to address issues with it promptly?

- The coolant level sensor helps monitor the coolant level in the battery pack, ensuring optimal performance and preventing overheating. Addressing issues promptly can prevent potential damage to the battery pack and maintain the efficiency of the hybrid/EV system.

7. Can unresolved issues related to OBDII code P1FFD impact the overall performance and safety of the Hybrid/EV vehicle?

- Yes, unresolved issues can lead to further damage to the battery pack, decreased efficiency of the hybrid/EV system, and potential safety risks. It is crucial to address such issues promptly to maintain the vehicle's performance and safety.

8. Are there any specific maintenance tips to prevent OBDII code P1FFD from occurring in the Hybrid/EV Battery Pack Coolant Level Sensor Circuit?

- Regularly checking the battery coolant level, ensuring proper maintenance of the cooling system, and addressing any leaks promptly can help prevent issues with the coolant level sensor circuit and reduce the likelihood of triggering this fault code.

9. How long does it typically take to diagnose and repair OBDII code P1FFD related to the Hybrid/EV Battery Pack Coolant Level Sensor Circuit?

- The time required for diagnosis and repair can vary based on the complexity of the issue and the availability of parts. It is advisable to consult with a professional technician to get an accurate estimate of the time needed to resolve the problem.

10. Is it safe to continue driving a Hybrid/EV vehicle with OBDII code P1FFD indicating a High Voltage in the Battery Pack Coolant Level Sensor Circuit?

- It is not recommended to continue driving the vehicle with unresolved issues related to the coolant level sensor circuit. Doing so can potentially lead to further damage to the battery pack and compromise the safety and performance of the hybrid/EV system.