AutoCodes – Audi – P1125 Audi

P1125 Audi Code - Long Term Fuel Trim Adjustment Bank 2 System Too Rich

Quick Answer

P1125 Audi indicates Long Term Fuel Trim Adjustment Bank 2 System Too Rich. Common causes include Faulty HO2S, Faulty Mass Air Flow Sensor, High fuel pressure. 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: P1125 Audi indicates Long Term Fuel Trim Adjustment Bank 2 System Too Rich.
Common causes: Common causes include Faulty HO2S, Faulty Mass Air Flow Sensor, High fuel pressure.
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 4,122

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 26, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1125 Audi Description

OBDII Code P1125 Audi - Long Term Fuel Trim Adjustment Bank 2 System Too Rich - AutoCodes.com — P1125 Audi Code - Long Term Fuel Trim Adjustment Bank 2 System Too Rich

What does this mean?

What are the Possible Causes of the DTC P1125 Audi?

Faulty HO2S
Faulty Mass Air Flow Sensor
High fuel pressure
Canister purge solenoid stuck open
HO2S harness is open or shorted
HO2S circuit poor electrical connection

How to Fix the DTC P1125 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 P1125 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 P1125 Audi code?

Need more information on how to fix the P1125 Audi code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1125 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 P1125 Audi Code

1. What are the common symptoms of OBDII code P1125 in an Audi related to Long Term Fuel Trim Adjustment Bank 2 System Too Rich?

- Common symptoms include decreased fuel efficiency, rough idle, engine misfires, and a noticeable decrease in overall performance.

2. What are the possible causes of OBDII code P1125 in an Audi indicating Long Term Fuel Trim Adjustment Bank 2 System Too Rich?

- Potential causes may include a faulty oxygen sensor, vacuum leaks, a malfunctioning fuel injector, a clogged air filter, or issues with the fuel pressure regulator.

3. How can I diagnose the root cause of OBDII code P1125 in my Audi?

- To diagnose the issue, you can use an OBDII scanner to retrieve the specific error code. From there, you can inspect the oxygen sensors, check for vacuum leaks, test the fuel injectors, and examine the air intake system for any blockages.

4. Can driving with OBDII code P1125 in an Audi be harmful to the vehicle?

- Continuing to drive with this code present can potentially damage the catalytic converter and other components of the engine over time, leading to more costly repairs down the line.

5. What steps can I take to repair OBDII code P1125 in my Audi related to Long Term Fuel Trim Adjustment Bank 2 System Too Rich?

- Repair options may include replacing the oxygen sensor, fixing any vacuum leaks, cleaning or replacing the fuel injectors, replacing the air filter, or addressing any issues with the fuel pressure regulator.

6. Is it possible to reset OBDII code P1125 in an Audi without fixing the underlying issue?

- While you can clear the error code temporarily, it will likely reappear if the root cause of the problem is not addressed. It is recommended to diagnose and repair the issue to prevent further damage to the vehicle.

7. How much does it typically cost to repair OBDII code P1125 in an Audi at a professional mechanic or dealership?

- The cost of repair can vary depending on the specific cause of the issue and the labor rates in your area. It is advisable to obtain quotes from different service providers to compare prices.

8. Are there any preventative maintenance tips to avoid encountering OBDII code P1125 in an Audi?

- Regularly servicing your vehicle, replacing the air filter as recommended, using quality fuel, and ensuring proper maintenance of the oxygen sensors can help prevent issues that may trigger this error code.

9. Can a DIY enthusiast with basic automotive knowledge attempt to fix OBDII code P1125 in an Audi?

- Depending on the cause of the issue, some repairs related to this error code can be tackled by individuals with basic automotive skills. However, more complex issues may require professional expertise.

10. How urgent is it to address OBDII code P1125 in an Audi once it appears?

- It is recommended to address this issue promptly to prevent further damage to the vehicle and ensure optimal engine performance. Delaying repairs can lead to more severe issues and increased repair costs.