AutoCodes – Audi – P023B Audi

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

Quick Answer

The Powertrain Control Module (PCM) monitors the Charge Air Cooler Coolant Pump function. 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 Audi 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 4,090

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 P023B Audi Description

The Powertrain Control Module (PCM) monitors the Charge Air Cooler Coolant Pump function. The PCM sets the OBDII code when the Charge Air Cooler Coolant Pump is out of factory specifications.

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

What does this mean?

What are the Possible Causes of the DTC P023B Audi?

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

How to Fix the DTC P023B Audi?

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 Audi 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 P023B Audi code?

Need more information on how to fix the P023B Audi code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P023B Audi 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 P023B Audi Code

What does the OBDII code P023B mean for an Audi?

The P023B code indicates a problem with the charge air cooler coolant pump control circuit, specifically that the circuit is experiencing low voltage or a fault.

What are common symptoms of the P023B code?

Symptoms may include reduced engine performance, overheating issues, a triggered check engine light, and poor fuel efficiency.

What could cause the P023B code to trigger?

Common causes include a faulty charge air cooler pump, wiring issues such as shorts or open circuits, or a malfunctioning engine control module (ECM).

How can I diagnose the P023B code?

Start by using an OBD-II scanner to confirm the code, then check the coolant pump for proper operation, inspect the wiring and connectors for damage, and test the voltage supply to the pump.

Is it safe to drive with the P023B code?

While it may be safe for short distances, driving with this code can lead to engine overheating and further damage, so it's advisable to address the issue promptly.

What are some common repair solutions for the P023B code?

Repairs may include replacing the charge air cooler pump, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the ECM if necessary.

How much does it typically cost to fix the P023B code?

Repair costs can vary widely, but expect to spend anywhere from $100 to $600 depending on the specific repairs needed, such as parts and labor.

Can the P023B code be cleared and will it come back?

Yes, the code can be cleared using an OBD-II scanner, but if the underlying issue isn't fixed, the code is likely to reappear.

What should I do if I encounter the P023B code?

It's recommended to perform a thorough diagnostic to identify the root cause and address any issues with the charge air cooler pump or related components to prevent further engine problems.