Engine-CodesBuick – P1FFC Buick

P1FFC Buick Code - Hybrid/EV Battery Pack Coolant Level Sensor Circuit Low Voltage

Quick Answer

The P1FFC diagnostic trouble code for Buick vehicles specifically pertains to the Hybrid/EV Battery Pack Coolant Level Sensor Circuit Low Voltage. Common causes include Faulty coolant level sensor, Wiring or connection issues in the coolant level sensor circuit, Low coolant level in the battery pack. 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
P1FFC Buick indicates Hybrid/EV Battery Pack Coolant Level Sensor Circuit Low Voltage.
Common causes
Common causes include Faulty coolant level sensor, Wiring or connection issues in the coolant level sensor circuit, Low coolant level in the battery pack.
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.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P1FFC Buick Description

The P1FFC diagnostic trouble code for Buick vehicles specifically pertains to the Hybrid/EV Battery Pack Coolant Level Sensor Circuit Low Voltage. This code indicates that there is an issue with the coolant level sensor circuit within the hybrid or electric vehicle battery pack. The coolant level sensor is responsible for monitoring the level of coolant in the battery pack to ensure it remains within the optimal range for proper operation. When the sensor detects a low voltage in the circuit, it triggers the P1FFC code.

OBDII Code P1FFC Buick - Hybrid/EV Battery Pack Coolant Level Sensor Circuit Low Voltage
P1FFC Buick Code - Hybrid/EV Battery Pack Coolant Level Sensor Circuit Low Voltage

Common Causes of P1FFC Buick

  1. Faulty coolant level sensor
  2. Wiring or connection issues in the coolant level sensor circuit
  3. Low coolant level in the battery pack
  4. Corrosion or damage to the sensor or circuit components
  5. Electrical issues within the battery pack system

Symptoms of P1FFC Buick

  1. Illumination of the check engine light on the dashboard
  2. Erratic or inaccurate coolant level readings on the instrument cluster
  3. Overheating of the battery pack
  4. Reduced hybrid or electric vehicle performance
  5. In extreme cases, vehicle may enter a reduced power mode to prevent damage

How to Fix P1FFC Buick

  1. Perform a comprehensive diagnostic scan to retrieve the P1FFC code and identify the specific cause of the low voltage in the coolant level sensor circuit.
  2. Inspect the coolant level sensor and associated wiring for any signs of damage or corrosion, and repair or replace components as needed.
  3. Test the voltage levels within the circuit to ensure they are within the manufacturer's specifications.
  4. Refill the battery pack coolant to the recommended level and monitor for any leaks or further issues.
  5. Clear the code from the vehicle's computer system and verify that the issue has been resolved through additional diagnostic testing.

Cost to Fix P1FFC Buick

The cost of repairing a P1FFC code for a Buick hybrid or electric vehicle can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts for a coolant level sensor or related components can range from $100 to $300, while labor costs may range from $150 to $300 or more. Overall, the total repair cost for addressing a P1FFC code could range from $250 to $600 or higher. It is recommended to consult with a qualified mechanic or dealership to obtain a more accurate estimate based on the specific circumstances of your vehicle. Keep in mind that diagnostic time and labor rates can vary based on location and the type of repair facility.

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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 P1FFC Buick Code

1. What does the OBDII code P1FFC mean on a Buick?

The P1FFC code indicates a low voltage issue in the Hybrid/EV battery pack coolant level sensor circuit, which monitors the coolant level in the battery cooling system.

2. What are the common symptoms of a P1FFC code?

Symptoms may include an illuminated check engine light, reduced hybrid or EV performance, overheating of the battery pack, or warning messages related to the cooling system.

3. What causes the P1FFC code to appear on a Buick?

Common causes include a faulty coolant level sensor, damaged or corroded wiring, a low coolant level, or issues with the sensor’s electrical connector.

4. Can driving with a P1FFC code damage my vehicle?

Yes, continuing to drive with this code may lead to inadequate cooling of the hybrid/EV battery pack, potentially causing overheating and long-term damage.

5. How do I diagnose a P1FFC code on a Buick?

Diagnosis involves checking the coolant level, inspecting the coolant level sensor and its wiring for damage, and testing the circuit voltage using a multimeter.

6. How can I fix the P1FFC code issue?

Repairs may include refilling the coolant, replacing a faulty coolant level sensor, repairing or replacing damaged wiring, or cleaning corroded connectors.

7. Is a low coolant level always the cause of the P1FFC code?

No, while a low coolant level is a common cause, the issue may also stem from electrical problems in the sensor circuit or a defective sensor.

8. How much does it cost to fix a P1FFC code on a Buick?

The repair cost can vary widely, ranging from $50 for a simple coolant refill to $200–$500 if sensor replacement or wiring repairs are needed.

9. Can I clear the P1FFC code without fixing the issue?

Clearing the code without resolving the underlying problem will likely result in the code returning and could risk further damage to the vehicle.

10. How often should I check the coolant level in my Buick’s hybrid/EV battery cooling system?

It’s a good practice to check the coolant level during regular maintenance or whenever warning lights related to the cooling system appear.

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