AutoCodes – Generic – P0CC4

P0CC4 Code - Drive Motor Coolant Pump Control Circuit High Voltage

Quick Answer

The Starter/Generator Control Module coolant pump is a single speed ON/OFF pump that circulates coolant through the auxiliary radiator and the starter/generator to control the temperature of the starter/generator. Common causes include Faulty Starter/Generator Coolant Pump, Starter/Generator Coolant Pump harness is open or shorted, Starter/Generator 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: P0CC4 indicates Drive Motor Coolant Pump Control Circuit High Voltage.
Common causes: Common causes include Faulty Starter/Generator Coolant Pump, Starter/Generator Coolant Pump harness is open or shorted, Starter/Generator 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.

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Code Popularity 914

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 Nov 21, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0CC4 Description

The Starter/Generator Control Module coolant pump is a single speed ON/OFF pump that circulates coolant through the auxiliary radiator and the starter/generator to control the temperature of the starter/generator. The starter/generator cooling system is separate from the engine cooling system and does not share any coolant or components. The Starter/Generator Control Module coolant pump is controlled by the starter/generator coolant pump relay. This relay is a printed circuit board relay and integrated as part of the underhood fuse block. The relay switch and coil both receive B+. The Starter/Generator Control Module controls the relay coil by applying ground to the coil control circuit. With the coil grounded, the relay switch is closed and voltage is sent to the Starter/Generator Control Module coolant pump, which will begin circulating coolant.
The Starter/Generator Control Module uses the exponentially weighted moving average to calculate temperature fluctuations in the starter/generator cooling system. In addition, this diagnostic compares the temperature rate of change by a slope calculation within a set time when the Starter/Generator Control Module coolant pump turns ON. This diagnostic runs once after pump turns ON. If the temperature changes over time too quickly, the Starter/Generator Control Module will indicate a fault.

OBDII Code P0CC4 - Drive Motor Coolant Pump Control Circuit High Voltage - AutoCodes.com — P0CC4 Code - Drive Motor Coolant Pump Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0CC4?

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 P0CC4?

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 P0CC4 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 P0CC4 code?

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Information for Specific Makes

P0CC4 Buick — Drive Motor Coolant Pump Control Circuit High Voltage
P0CC4 Cadillac — Drive Motor Coolant Pump Control Circuit High Voltage
P0CC4 Chevrolet — Drive Motor Coolant Pump Control Circuit High Voltage
P0CC4 GMC — Drive Motor Coolant Pump Control Circuit High Voltage

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 P0CC4 Code

What does the OBDII code P0CC4 mean?

The OBDII code P0CC4 indicates a high voltage condition in the drive motor coolant pump control circuit, which is part of the electric vehicle's cooling system.

What symptoms might indicate a P0CC4 code?

Common symptoms include overheating of the electric motor, warning lights on the dashboard, and a decrease in vehicle performance.

What could cause the P0CC4 code to trigger?

Possible causes include a faulty coolant pump, wiring issues such as shorts or open circuits, or problems with the control module that manages the pump.

How can I diagnose the P0CC4 code?

To diagnose the P0CC4 code, start by using an OBDII scanner to confirm the code, then visually inspect the wiring and connectors for damage, and check the coolant pump's operation.

What are potential repair solutions for a P0CC4 code?

Repair solutions may include replacing a faulty coolant pump, repairing damaged wiring, or replacing the control module if it is found to be defective.

Can I drive my vehicle with a P0CC4 code?

It is not advisable to drive your vehicle with a P0CC4 code, as it may lead to overheating and potential damage to the motor or other components.

How much does it typically cost to fix a P0CC4 code?

Repair costs for a P0CC4 code can vary widely but may range from $100 to $1,000, depending on whether you need to replace the coolant pump, repair wiring, or replace the control module.

Is the P0CC4 code specific to electric vehicles?

Yes, the P0CC4 code is primarily associated with electric and hybrid vehicles that utilize a drive motor coolant pump for temperature regulation.

What should I do if the P0CC4 code returns after repair?

If the P0CC4 code returns after repairs, further diagnosis may be necessary to check for additional underlying issues, such as persistent wiring problems or a malfunctioning control module.