AutoCodes – Audi – P1423 Audi

P1423 Audi Code - Bank 1 Secondary Air Injection System Output Too Small

Quick Answer

P1423 Audi indicates Bank 1 Secondary Air Injection System Output Too Small. Common causes include Faulty AIR Pump, AIR Pump harness is open or shorted, AIR 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: P1423 Audi indicates Bank 1 Secondary Air Injection System Output Too Small.
Common causes: Common causes include Faulty AIR Pump, AIR Pump harness is open or shorted, AIR 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 18,932

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 Aug 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1423 Audi Description

OBDII Code P1423 Audi - Bank 1 Secondary Air Injection System Output Too Small - AutoCodes.com — P1423 Audi Code - Bank 1 Secondary Air Injection System Output Too Small

What does this mean?

What are the Possible Causes of the DTC P1423 Audi?

Faulty AIR Pump
AIR Pump harness is open or shorted
AIR Pump circuit poor electrical connection

How to Fix the DTC P1423 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 P1423 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 P1423 Audi code?

Need more information on how to fix the P1423 Audi code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1423 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 P1423 Audi Code

1. What are the common symptoms of OBDII code P1423 in an Audi related to the Bank 1 Secondary Air Injection System?

- Common symptoms include rough idling, engine misfires, reduced power, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P1423 indicating that the Bank 1 Secondary Air Injection System output is too small in an Audi?

- Possible causes include a faulty secondary air pump, damaged air hoses, a malfunctioning air pump relay, or a blocked air inlet or outlet.

3. How can I diagnose the OBDII code P1423 in my Audi related to the Bank 1 Secondary Air Injection System?

- Diagnosis typically involves inspecting the secondary air pump, checking the air hoses for leaks or damage, testing the air pump relay, and ensuring the air inlet and outlet are clear.

4. Can I continue driving my Audi with OBDII code P1423 indicating an issue with the Bank 1 Secondary Air Injection System?

- It is not recommended to continue driving with this code as it can lead to further engine damage and decreased performance. It's best to address the issue promptly.

5. What are some repair tips for fixing OBDII code P1423 in an Audi concerning the Bank 1 Secondary Air Injection System?

- Repair tips include replacing a faulty secondary air pump, repairing or replacing damaged air hoses, checking and possibly replacing the air pump relay, and ensuring proper airflow in the system.

6. How much does it typically cost to repair OBDII code P1423 related to the Bank 1 Secondary Air Injection System in an Audi?

- The cost of repairs can vary depending on the exact cause of the issue and the labor rates in your area. It's best to consult with a mechanic for an accurate estimate.

7. Are there any preventative maintenance steps I can take to avoid encountering OBDII code P1423 in my Audi?

- Regularly inspecting the secondary air injection system components, checking for leaks or damage, and ensuring proper airflow can help prevent issues leading to this code.

8. Can a DIY enthusiast with some automotive knowledge fix OBDII code P1423 in an Audi related to the Bank 1 Secondary Air Injection System?

- Depending on the specific cause of the code, some repairs may be accessible to DIY enthusiasts. However, it's crucial to have the necessary tools and expertise to address the issue correctly.

9. Is OBDII code P1423 in an Audi indicating a serious problem with the Bank 1 Secondary Air Injection System?

- While the issue should be addressed promptly to prevent further damage, it is not typically considered a severe problem if dealt with in a timely manner by a qualified mechanic.

10. How long does it usually take to repair OBDII code P1423 in an Audi associated with the Bank 1 Secondary Air Injection System?

- The repair time can vary based on the exact cause of the code and the complexity of the fix. It's advisable to consult with a mechanic to get an estimate of the repair duration.