AutoCodes – GMC – P1FFE GMC

P1FFE GMC Code - Hybrid/EV Battery Pack Coolant Level Low

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: P1FFE GMC indicates Hybrid/EV Battery Pack Coolant Level Low.
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 889

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 P1FFE GMC 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 P1FFE GMC - Hybrid/EV Battery Pack Coolant Level Low - AutoCodes.com — P1FFE GMC Code - Hybrid/EV Battery Pack Coolant Level Low

What does this mean?

What are the Possible Causes of the DTC P1FFE GMC?

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 P1FFE GMC?

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 P1FFE GMC 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 P1FFE GMC Code

1. What are the common symptoms of OBDII code P1FFE GMC (Hybrid/EV Battery Pack Coolant Level Low)?

- Common symptoms include the illumination of the check engine light, reduced hybrid/EV performance, and a message or warning on the dashboard indicating low coolant level in the battery pack.

2. What causes the OBDII code P1FFE GMC (Hybrid/EV Battery Pack Coolant Level Low)?

- The code is triggered when the hybrid/EV battery pack coolant level is detected to be low, which can be caused by leaks in the coolant system, a faulty sensor, or improper maintenance.

3. How serious is the OBDII code P1FFE GMC (Hybrid/EV Battery Pack Coolant Level Low)?

- This code should be addressed promptly to prevent damage to the battery pack and ensure the proper functioning of the hybrid/EV system. Ignoring the issue can lead to overheating and potential battery failure.

4. Can I continue driving with the OBDII code P1FFE GMC (Hybrid/EV Battery Pack Coolant Level Low) active?

- It is not recommended to continue driving with this code active, as low coolant levels can impact the battery pack's performance and longevity. It is best to have the issue diagnosed and repaired as soon as possible.

5. How can I diagnose the cause of OBDII code P1FFE GMC (Hybrid/EV Battery Pack Coolant Level Low)?

- Diagnosing the issue typically involves checking the coolant level in the battery pack, inspecting for leaks in the coolant system, testing the sensor for proper functionality, and scanning the system for any related fault codes.

6. What are some repair tips for addressing OBDII code P1FFE GMC (Hybrid/EV Battery Pack Coolant Level Low)?

- Repair tips may include topping up the coolant level in the battery pack, repairing any leaks in the coolant system, replacing a faulty sensor, and ensuring proper maintenance of the hybrid/EV system.

7. Can I reset the OBDII code P1FFE GMC (Hybrid/EV Battery Pack Coolant Level Low) myself?

- While you can clear the code using an OBDII scanner, it is important to address the underlying issue causing the low coolant level to prevent the code from returning. If the issue is not resolved, the code will likely reappear.

8. Is it safe to add coolant to the hybrid/EV battery pack myself?

- Adding coolant to the hybrid/EV battery pack may require specific coolant types and procedures recommended by the manufacturer. It is best to consult the vehicle's manual or seek professional assistance to ensure the correct coolant is used and no damage is caused.

9. How much does it typically cost to repair OBDII code P1FFE GMC (Hybrid/EV Battery Pack Coolant Level Low)?

- Repair costs can vary depending on the underlying cause of the issue and whether any parts need to be replaced. It is recommended to get a diagnostic inspection from a qualified technician to determine the exact cost of repair.

10. Will OBDII code P1FFE GMC (Hybrid/EV Battery Pack Coolant Level Low) affect the overall performance of my hybrid/EV vehicle?

- Yes, this code can affect the performance of the hybrid/EV system, as low coolant levels can lead to overheating and decreased efficiency of the battery pack. Addressing the issue promptly will help maintain the optimal performance of the vehicle.