AutoCodes – Chevrolet – P023C Chevrolet

P023C Chevrolet Code - Charge Air Cooler Coolant Pump Relay Control Circuit High

Quick Answer

The supercharger intercooler relay is a normally open relay. Common causes include Faulty Charge Air Cooler Coolant Pump Relay, Charge Air Cooler Coolant Pump Relay harness is open or shorted, Charge Air Cooler Coolant Pump Relay 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: P023C Chevrolet indicates Charge Air Cooler Coolant Pump Relay Control Circuit High.
Common causes: Common causes include Faulty Charge Air Cooler Coolant Pump Relay, Charge Air Cooler Coolant Pump Relay harness is open or shorted, Charge Air Cooler Coolant Pump Relay 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 2,057

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 Apr 13, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P023C Chevrolet Description

The supercharger intercooler relay is a normally open relay. The relay armature is held in the open position by spring tension. The ignition 1 voltage is supplied directly to the relay coil and to the armature contact when the ignition is ON, or the engine is running. The Engine Control Module (ECM) supplies the ground path to the relay coil control circuit via an internal integrated circuit called an output driver module. When the engine is running, the ECM commands the relay ON, and the relay coil creates an electromagnetic field. This electromagnetic field overcomes the spring tension and pulls the armature contact into the stationary contact of the relay load circuit. The closing of the relay contacts allow current to flow from the battery to the supercharger intercooler pump. When the ignition switch is turned to the OFF position, power is interrupted to the output driver module in the ECM and the relay electromagnetic field collapses. This allows the spring tension to separate the relay armature contact from the relay load circuit contact, which interrupts current flow to the supercharger charge air cooler coolant pump.
If the ECM detects an improper voltage on the pump relay control circuit this DTC sets.

OBDII Code P023C Chevrolet - Charge Air Cooler Coolant Pump Relay Control Circuit High - AutoCodes.com — P023C Chevrolet Code - Charge Air Cooler Coolant Pump Relay Control Circuit High

What does this mean?

What are the Possible Causes of the DTC P023C Chevrolet?

Faulty Charge Air Cooler Coolant Pump Relay
Charge Air Cooler Coolant Pump Relay harness is open or shorted
Charge Air Cooler Coolant Pump Relay circuit poor electrical connection

How to Fix the DTC P023C 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 P023C 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 P023C Chevrolet Code

1. What are common symptoms of OBDII code P023C in a Chevrolet related to the charge air cooler coolant pump relay control circuit high?

- Common symptoms include illuminated Check Engine Light, engine overheating, reduced engine performance, and potential coolant leaks.

2. What are possible causes of OBDII code P023C in a Chevrolet indicating a high charge air cooler coolant pump relay control circuit?

- Possible causes include a faulty charge air cooler coolant pump relay, damaged wiring or connectors, low coolant levels, or a malfunctioning engine coolant temperature sensor.

3. How can I diagnose the high charge air cooler coolant pump relay control circuit issue triggering OBDII code P023C in my Chevrolet?

- Diagnosis typically involves checking the charge air cooler coolant pump relay, inspecting the wiring and connectors for damage, testing the engine coolant temperature sensor, and verifying coolant levels.

4. Can driving with OBDII code P023C present in a Chevrolet cause further damage to the vehicle?

- Continuing to drive with this code may lead to engine overheating, reduced engine performance, and potential damage to engine components if the issue is not addressed promptly.

5. Are there any simple repair tips for addressing OBDII code P023C related to the charge air cooler coolant pump relay control circuit high in a Chevrolet?

- It is recommended to first check and replace the charge air cooler coolant pump relay if necessary, inspect and repair any damaged wiring or connectors, and ensure proper coolant levels are maintained.

6. How can I reset the Check Engine Light after resolving the high charge air cooler coolant pump relay control circuit issue in my Chevrolet?

- The Check Engine Light can be reset using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes to clear the code and reset the light.

7. Is it safe to continue driving my Chevrolet with OBDII code P023C if I am unable to address the issue immediately?

- It is not recommended to drive the vehicle with this code present, as it can lead to engine overheating and potential damage. It is best to address the issue as soon as possible.

8. Can a DIY enthusiast with basic automotive knowledge repair OBDII code P023C related to the charge air cooler coolant pump relay control circuit high in a Chevrolet?

- Depending on the specific cause, a DIY enthusiast may be able to address this issue by replacing the charge air cooler coolant pump relay, checking and repairing wiring, and ensuring proper coolant levels.

9. How long does it typically take to repair OBDII code P023C in a Chevrolet caused by a high charge air cooler coolant pump relay control circuit issue?

- The repair time can vary based on the exact cause and the individual's experience level, but it can usually be addressed within a few hours to a day with the necessary tools and parts.

10. Are there any recalls or service bulletins related to OBDII code P023C in Chevrolet vehicles for the charge air cooler coolant pump relay control circuit high issue?

- It is advisable to check with a Chevrolet dealership or online resources for any relevant recalls or service bulletins related to this specific OBDII code to ensure proper resolution.