AutoCodes – Jeep – P023B Jeep

P023B Jeep Code - Charge Air Cooler Coolant Pump Control Circuit Low

Quick Answer

The Charge Air Cooler (CAC) system is used to reduce the temperature of the air entering the combustion chambers to improve engine performance. Common causes include Faulty Charge Air Cooler Coolant Pump, Charge Air Cooler Coolant Pump harness is open or shorted, Charge Air Cooler 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: P023B Jeep indicates Charge Air Cooler Coolant Pump Control Circuit Low.
Common causes: Common causes include Faulty Charge Air Cooler Coolant Pump, Charge Air Cooler Coolant Pump harness is open or shorted, Charge Air Cooler 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 359

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 02, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P023B Jeep Description

The Charge Air Cooler (CAC) system is used to reduce the temperature of the air entering the combustion chambers to improve engine performance. The Supercharger causes the temperature increase of the air entering the engine. The CAC system consists of an electric CAC Coolant Pump, Charge Air Coolers, Coolant Reservoir, Charge Air Cooler Radiator, Charge Air Cooler Coolant Temperature Sensor, and plumbing. The CAC cooling system operates independently of the vehicle’s primary cooling system.
The CAC Pump is a smart device that contains a LIN Bus communication module and a coolant pump. To maintain a desired charge air temperature, the Powertrain Control Module (PCM) sends a pump speed command over the LIN bus to the internal CAC pump module. The internal CAC Pump module controls the pump speed/coolant flow rate using Pulse-width modulation (PWM). The CAC Pump assembly monitors for internal system circuits and performance failures. If a fault occurs the CAC Pump module sends the fault information to the PCM through the dedicated LIN Bus. The PCM processes the information received and then sets the correlating fault.
The Diagnostic Trouble Code (DTC) will be set if the PCM receives a LIN bus message from the Charge Air Cooler Coolant Pump that the pump control circuit voltage is less than 8.5-Volts.

OBDII Code P023B Jeep - Charge Air Cooler Coolant Pump Control Circuit Low - AutoCodes.com — P023B Jeep Code - Charge Air Cooler Coolant Pump Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC P023B Jeep?

Faulty Charge Air Cooler Coolant Pump
Charge Air Cooler Coolant Pump harness is open or shorted
Charge Air Cooler Coolant Pump circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P023B Jeep?

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 P023B Jeep 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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Need Help with the Code?

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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 P023B Jeep Code

1. What are the common symptoms of OBDII code P023B in a Jeep related to the Charge Air Cooler Coolant Pump Control Circuit Low?

- Common symptoms include engine overheating, reduced engine performance, illuminated check engine light, and potential coolant leaks.

2. What are the possible causes of the Charge Air Cooler Coolant Pump Control Circuit Low code (P023B) in a Jeep?

- Potential causes may include a faulty coolant pump, damaged wiring or connectors in the coolant pump circuit, low coolant level, or a malfunctioning coolant temperature sensor.

3. How can I diagnose the Charge Air Cooler Coolant Pump Control Circuit Low code in my Jeep?

- Diagnosis typically involves checking the coolant level, inspecting the coolant pump and related wiring for damage, testing the coolant temperature sensor, and using an OBDII scanner to read the trouble codes.

4. What are some repair tips for addressing OBDII code P023B in a Jeep?

- Repair tips may include replacing the faulty coolant pump, repairing any damaged wiring or connectors, ensuring the coolant system is properly bled, and clearing the trouble code with an OBDII scanner after repairs.

5. Can driving with an unresolved P023B code in a Jeep cause further damage?

- Continuing to drive with this code unresolved can lead to engine overheating, potential damage to engine components, and reduced fuel efficiency, so it is advisable to address the issue promptly.

6. How much does it typically cost to repair OBDII code P023B related to the Charge Air Cooler Coolant Pump Control Circuit Low in a Jeep?

- The cost of repairs can vary depending on the exact cause of the issue, but it may range from $200 to $500 for parts and labor.

7. Is it safe to continue driving my Jeep with the Charge Air Cooler Coolant Pump Control Circuit Low code present?

- It is not recommended to drive 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 the P023B code in a Jeep themselves?

- Depending on the exact cause of the code, some DIY enthusiasts may be able to address the issue themselves by replacing the coolant pump or repairing wiring. However, it is recommended to have some mechanical knowledge and the right tools for the job.

9. How long does it typically take to repair the Charge Air Cooler Coolant Pump Control Circuit Low code in a Jeep?

- The repair time can vary based on the exact cause of the issue and the expertise of the mechanic, but it may take anywhere from 1 to 3 hours to diagnose and repair the problem.

10. Are there any preventive maintenance tips to reduce the likelihood of encountering the P023B code in a Jeep?

- Regularly checking the coolant level, ensuring proper coolant system maintenance, and addressing any cooling system issues promptly can help reduce the chances of encountering the Charge Air Cooler Coolant Pump Control Circuit Low code.