Engine-CodesGMC – P19FC GMC

P19FC GMC Code - Hybrid/EV Electronics Coolant Pump Feedback Circuit Performance

Quick Answer

The P19FC diagnostic trouble code for GMC vehicles refers to an issue with the Hybrid/EV Electronics Coolant Pump Feedback Circuit Performance. Common causes include Faulty coolant pump feedback sensor, Wiring or connection issues in the feedback circuit, Malfunctioning coolant pump. 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
P19FC GMC indicates Hybrid/EV Electronics Coolant Pump Feedback Circuit Performance.
Common causes
Common causes include Faulty coolant pump feedback sensor, Wiring or connection issues in the feedback circuit, Malfunctioning coolant pump.
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 P19FC GMC Description

The P19FC diagnostic trouble code for GMC vehicles refers to an issue with the Hybrid/EV Electronics Coolant Pump Feedback Circuit Performance. This code indicates that the vehicle's hybrid or electric vehicle system has detected a problem with the coolant pump feedback circuit, which is responsible for monitoring and regulating the flow of coolant within the system.

OBDII Code P19FC GMC - Hybrid/EV Electronics Coolant Pump Feedback Circuit Performance
P19FC GMC Code - Hybrid/EV Electronics Coolant Pump Feedback Circuit Performance

Common Causes of P19FC GMC

  1. Faulty coolant pump feedback sensor
  2. Wiring or connection issues in the feedback circuit
  3. Malfunctioning coolant pump
  4. Low coolant levels
  5. Power supply issues to the coolant pump

Symptoms of P19FC GMC

  1. Illuminated check engine light on the dashboard
  2. Engine overheating or fluctuating temperature gauge readings
  3. Reduced power or efficiency in hybrid or electric mode
  4. Strange noises coming from the coolant pump area
  5. Inability to switch between hybrid and electric modes

How to Fix P19FC GMC

  1. Begin by diagnosing the specific cause of the issue using a diagnostic scanner to retrieve the trouble codes and perform electrical testing on the coolant pump feedback circuit.
  2. Inspect the coolant pump feedback sensor, wiring, and connections for any signs of damage or malfunction. Replace any faulty components as needed.
  3. Test the coolant pump for proper operation and replace it if it is not functioning correctly.
  4. Check and refill the coolant levels to the manufacturer's specifications to ensure proper cooling system operation.
  5. Clear the trouble codes from the vehicle's system and perform a test drive to verify that the issue has been resolved.

Cost to Fix P19FC GMC

The typical repair costs for addressing the P19FC code related to the Hybrid/EV Electronics Coolant Pump Feedback Circuit Performance can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts such as a coolant pump, sensor, or wiring components can range from $100 to $500, while the labor costs for diagnosis and repair can add an additional $200 to $500. Overall, the total repair costs for this issue may fall within the range of $300 to $1000, but it is advisable to consult with a professional mechanic for a more accurate estimate based on the vehicle's make and model, as well as local labor rates.

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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 P19FC GMC Code

1. What are the common symptoms of OBDII code P19FC in a GMC Hybrid/EV?

The common symptoms include the check engine light coming on, reduced engine performance, overheating, and possible coolant leaks.

2. What are the possible causes of the Hybrid/EV Electronics Coolant Pump Feedback Circuit Performance code?

Possible causes include a malfunctioning coolant pump, damaged wiring or connectors in the coolant pump circuit, low coolant levels, or a faulty coolant temperature sensor.

3. How can I diagnose the P19FC code in my GMC Hybrid/EV?

Diagnosis typically involves using an OBDII scanner to retrieve the code, inspecting the coolant pump and related components for visible damage, checking coolant levels, and testing the coolant temperature sensor.

4. Can I continue driving my GMC with the P19FC code present?

It is not recommended to drive your vehicle with the P19FC code present as it can lead to engine overheating and potential damage. It is best to address the issue promptly.

5. What are some repair tips for fixing the Hybrid/EV Electronics Coolant Pump Feedback Circuit Performance code?

Repair tips may include replacing the coolant pump if it is faulty, repairing or replacing damaged wiring or connectors, ensuring proper coolant levels, and checking the operation of the coolant temperature sensor.

6. Is it safe to reset the OBDII code P19FC without fixing the underlying issue?

Resetting the code without addressing the underlying issue is not recommended, as the problem will likely persist, potentially causing more serious damage to the vehicle.

7. Can a DIY enthusiast fix the P19FC code in a GMC Hybrid/EV?

While some basic diagnostic steps can be performed by a DIY enthusiast, fixing the issue may require specialized tools and expertise. It is recommended to consult a professional mechanic for proper diagnosis and repair.

8. How much does it typically cost to repair the Hybrid/EV Electronics Coolant Pump Feedback Circuit Performance code?

The cost of repair can vary depending on the exact cause of the issue, the extent of the damage, and labor rates. It is advisable to obtain quotes from reputable mechanics or dealerships.

9. Will the P19FC code cause my GMC Hybrid/EV to fail an emissions test?

Since the code is related to the coolant system, it may not directly cause a failure in an emissions test. However, it is best to address the issue to ensure optimal vehicle performance and efficiency.

10. Are there any recalls or technical service bulletins related to the P19FC code in GMC vehicles?

It is advisable to check with a GMC dealership or visit the National Highway Traffic Safety Administration (NHTSA) website to determine if there are any relevant recalls or technical service bulletins related to the P19FC code in your specific vehicle model.

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