AutoCodes – Chevrolet – P19FC Chevrolet

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

Quick Answer

The Hybrid/EV Electronics Coolant Pump is a single-speed ON/OFF pump that circulates coolant through the auxiliary coolant radiator, starter/generator control module, and the starter/generator to control the temperature of these components. Common causes include Faulty Starter/Generator Coolant Pump Relay, Faulty Starter/Generator Coolant Pump, Starter/Generator Coolant Pump harness is open or shorted. 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 Chevrolet indicates Hybrid/EV Electronics Coolant Pump Feedback Circuit Performance.
Common causes: Common causes include Faulty Starter/Generator Coolant Pump Relay, Faulty Starter/Generator Coolant Pump, Starter/Generator Coolant Pump harness is open or shorted.
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 803

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 Jul 26, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P19FC Chevrolet Description

The Hybrid/EV Electronics Coolant Pump is a single-speed ON/OFF pump that circulates coolant through the auxiliary coolant radiator, starter/generator control module, and the starter/generator to control the temperature of these components.
The Enable and Feedback circuits allow the drive motor control module to control and monitor the Hybrid/EV Electronics Coolant Pump.
The Enable circuit controls the starter/generator coolant pump relay by applying ground to the relay coil control circuit. With the coil grounded, the relay switch is closed, and voltage is sent to the coolant pump, which begins circulating coolant.
The Hybrid/EV Electronics Coolant Pump utilizes a pulse-width modulated signal on the Feedback circuit to the drive motor control module. During normal operation, the feedback circuit provides pump speed information to the control module. If the Hybrid/EV Electronics Coolant Pump determines there is an internal fault it provides this information on the same feedback circuit instead of pump speed information. The starter/generator control module contains the Hybrid/EV Powertrain Control Module 1, drive motor control module, and the 14 V power module.
The Hybrid/EV Powertrain Control Module 1 will determine when a fault condition is present. Diagnostics and system status are communicated from the drive motor control module to the Hybrid/EV Powertrain Control Module 1 through internal serial data. The Hybrid/EV Powertrain Control Module 1 is the host controller for diagnostic trouble code information.
The Diagnostic Trouble Code (DTC) will be set if the Hybrid/EV Powertrain Control Module 1 detects the Coolant Pump Feedback circuit indicated pump speed is greater than 225 RPM when the pump is not enabled.

OBDII Code P19FC Chevrolet - Hybrid/EV Electronics Coolant Pump Feedback Circuit Performance - AutoCodes.com — P19FC Chevrolet Code - Hybrid/EV Electronics Coolant Pump Feedback Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P19FC Chevrolet?

Faulty Starter/Generator Coolant Pump Relay
Faulty Starter/Generator Coolant Pump
Starter/Generator Coolant Pump harness is open or shorted
Starter/Generator Coolant Pump circuit poor electrical connection
Faulty Starter/Generator Control Module

How to Fix the DTC P19FC Chevrolet?

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 P19FC Chevrolet 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 P19FC Chevrolet Code

1. What are the common symptoms of OBDII code P19FC for Chevrolet Hybrid/EV vehicles?

- Common symptoms include the Check Engine light illuminating, reduced hybrid/EV system performance, and potential overheating issues.

2. What can cause the OBDII code P19FC to trigger in a Chevrolet Hybrid/EV vehicle?

- The code P19FC is typically triggered by issues with the electronics coolant pump feedback circuit, such as a faulty pump, wiring problems, or a malfunctioning sensor.

3. How serious is the OBDII code P19FC for a Chevrolet Hybrid/EV vehicle?

- The code P19FC can affect the proper functioning of the hybrid/EV system, potentially leading to reduced efficiency and performance. It is important to address this issue promptly.

4. Can I continue to drive my Chevrolet Hybrid/EV vehicle with the OBDII code P19FC present?

- It is not recommended to drive your vehicle with the P19FC code active, as it can impact the cooling system's performance and potentially lead to more severe issues.

5. How can I diagnose the cause of the OBDII code P19FC in my Chevrolet Hybrid/EV vehicle?

- Diagnosing the P19FC code typically involves checking the electronics coolant pump, inspecting the wiring for any damage, and testing the feedback circuit components with a diagnostic tool.

6. Is it possible to repair the OBDII code P19FC issue in a Chevrolet Hybrid/EV vehicle at home?

- While some DIY enthusiasts may attempt to address the issue at home, it is recommended to have a professional technician diagnose and repair the P19FC code to ensure a proper fix.

7. Are there any specific maintenance tips to prevent the recurrence of the OBDII code P19FC in a Chevrolet Hybrid/EV vehicle?

- Regularly inspecting the electronics coolant pump, keeping the cooling system well-maintained, and addressing any warning signs promptly can help prevent the P19FC code from reoccurring.

8. How much does it typically cost to repair the OBDII code P19FC in a Chevrolet Hybrid/EV vehicle?

- The cost of repairing the P19FC code can vary depending on the specific issue causing it, but it may involve replacing the electronics coolant pump, repairing wiring, or addressing sensor malfunctions.

9. Can the OBDII code P19FC in a Chevrolet Hybrid/EV vehicle be reset without repairing the underlying issue?

- While it is possible to clear the code temporarily, it is crucial to address the root cause of the P19FC problem to prevent further issues and ensure the proper functioning of the hybrid/EV system.

10. How long does it usually take to repair the OBDII code P19FC in a Chevrolet Hybrid/EV vehicle?

- The repair time for the P19FC code can vary based on the specific cause of the issue and the complexity of the repair needed. It is advisable to consult a professional technician for an accurate estimate.