AutoCodesCadillac – P0C4A Cadillac

P0C4A Cadillac Code - Hybrid/EV Battery Pack Coolant Pump Performance

Quick Answer

The hybrid/EV battery pack coolant pump circulates coolant through the drive motor battery coolant radiator, drive motor battery coolant cooler and the hybrid/EV battery pack to control the temperature of the hybrid/EV battery pack. Common causes include Faulty Hybrid/EV Battery Pack Coolant Pump, Hybrid/EV Battery Pack Coolant Pump harness is open or shorted, Hybrid/EV Battery Pack Coolant Pump 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
P0C4A Cadillac indicates Hybrid/EV Battery Pack Coolant Pump Performance.
Common causes
Common causes include Faulty Hybrid/EV Battery Pack Coolant Pump, Hybrid/EV Battery Pack Coolant Pump harness is open or shorted, Hybrid/EV Battery Pack Coolant Pump 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 870
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 24, 2020
💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0C4A Cadillac Description

The hybrid/EV battery pack coolant pump circulates coolant through the drive motor battery coolant radiator, drive motor battery coolant cooler and the hybrid/EV battery pack to control the temperature of the hybrid/EV battery pack. An enable signal from the hybrid/EV powertrain control module 2 to the hybrid/EV battery pack coolant pump provides overall control of the pump. When this circuit is high, the pump can operate. The pump is controlled with a pulse-width modulated signal from the hybrid/EV powertrain control module 2 to the hybrid/EV battery pack coolant pump. The higher the duty cycle the higher the pump speed. The hybrid/EV battery pack coolant pump provides a hard-wired pulse-width modulated feedback signal to the hybrid/EV powertrain control module 2. During normal operation, this feedback signal provides pump speed information to the hybrid/EV powertrain control module 2. The hybrid/EV battery pack coolant pump has some self-diagnostic capability. If the hybrid/EV battery pack coolant pump determines there is an internal fault it provides this information on this same feedback circuit instead of pump speed information.
OBDII Code P0C4A Cadillac - Hybrid/EV Battery Pack Coolant Pump Performance - AutoCodes.com
P0C4A Cadillac Code - Hybrid/EV Battery Pack Coolant Pump Performance

What are the Possible Causes of the DTC P0C4A Cadillac?

  • Faulty Hybrid/EV Battery Pack Coolant Pump
  • Hybrid/EV Battery Pack Coolant Pump harness is open or shorted
  • Hybrid/EV Battery Pack Coolant Pump circuit poor electrical connection

How to Fix the DTC P0C4A Cadillac?

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 P0C4A Cadillac 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.

Need more information about the P0C4A Cadillac code?

Need more information on how to fix the P0C4A Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0C4A Cadillac code diagnosed by a professional: Find a repair shop in your area

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 P0C4A Cadillac Code

1. What does the OBDII code P0C4A mean on a Cadillac?

P0C4A indicates an issue with the Hybrid/EV battery pack coolant pump performance, which helps regulate the temperature of the battery pack.

2. What are the common symptoms of a P0C4A code in a Cadillac?

Symptoms may include an illuminated check engine light, reduced hybrid/EV performance, overheating of the battery pack, or a warning message on the dashboard.

3. What causes the P0C4A code to appear?

This code can be caused by a faulty coolant pump, a clogged or leaking coolant system, electrical issues like damaged wiring or connectors, or a failed temperature sensor.

4. Can I drive my Cadillac with a P0C4A code?

Driving with this code may lead to battery overheating and potential damage. It’s recommended to address the issue promptly to avoid further complications.

5. How do I fix the P0C4A code on my Cadillac?

Repairs may include inspecting and replacing the battery coolant pump, checking for leaks or blockages in the coolant system, repairing damaged wiring, or replacing a faulty temperature sensor.

6. How do I diagnose the P0C4A code in a Cadillac?

A professional diagnosis typically involves using a scan tool to check for related codes, visually inspecting the coolant pump and wiring, and testing the electrical circuits and coolant flow.

7. Is the P0C4A code common in all Cadillacs?

No, this code is specific to hybrid or electric Cadillac models with battery cooling systems and may not appear in traditional gas-powered vehicles.

8. How much does it cost to fix a P0C4A code on a Cadillac?

Repair costs can vary but typically range from $200 to $600, depending on whether the issue is a simple wiring repair or a full coolant pump replacement.

9. What happens if I ignore the P0C4A code on my Cadillac?

Ignoring this code can lead to battery overheating, reduced vehicle performance, and potentially costly repairs or permanent damage to the hybrid/EV system.

10. Can I reset the P0C4A code without fixing the issue?

While clearing the code is possible with a scan tool, the underlying issue will likely cause the code to return. Proper diagnosis and repair are necessary for a lasting fix.

Discuss the causes and fixes for P0C4A Cadillac OBDII Code

Code P0C4A Cadillac comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play