P1112 Audi Code - HO2S Control Bank 1 System Too Rich
Quick Answer
P1112 Audi indicates HO2S Control Bank 1 System Too Rich. Common causes include Faulty HO2 Sensor Bank 1, HO2 Sensor Bank 1 harness is open or shorted, HO2 Sensor Bank 1 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
- P1112 Audi indicates HO2S Control Bank 1 System Too Rich.
- Common causes
- Common causes include Faulty HO2 Sensor Bank 1, HO2 Sensor Bank 1 harness is open or shorted, HO2 Sensor Bank 1 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.
Code P1112 Audi Description
What are the Possible Causes of the DTC P1112 Audi?
- Faulty HO2 Sensor Bank 1
- HO2 Sensor Bank 1 harness is open or shorted
- HO2 Sensor Bank 1 circuit poor electrical connection
How to Fix the DTC P1112 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 P1112 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 P1112 Audi code?
Need more information on how to fix the P1112 Audi code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1112 Audi code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1112 Audi Code
What does the OBDII code P1112 mean on an Audi?
P1112 on an Audi indicates that the Heated Oxygen Sensor (HO2S) in Bank 1 has detected a fuel mixture that is too rich (too much fuel compared to air).
What are the common symptoms of code P1112 on an Audi?
Symptoms can include poor fuel economy, black smoke from the exhaust, a rough idle, reduced engine performance, and the check engine light being illuminated.
What causes the P1112 code to appear?
Common causes include a faulty oxygen sensor, leaking fuel injectors, a malfunctioning fuel pressure regulator, a vacuum leak, or a clogged air filter.
Can a bad oxygen sensor cause the P1112 code?
Yes, a faulty oxygen sensor can provide incorrect readings to the engine control module, leading to the P1112 code.
How can I diagnose the P1112 code?
Start by inspecting the oxygen sensor and wiring for damage. Check the air filter, fuel injectors, and vacuum lines for any issues. Use a scan tool to monitor live sensor data.
Is the P1112 code serious, and can I drive with it?
This code should be addressed promptly. Driving with a rich fuel mixture can damage the catalytic converter and reduce fuel efficiency.
How do I fix the P1112 code on an Audi?
Repairs may include replacing the oxygen sensor, repairing vacuum leaks, cleaning or replacing the air filter, or servicing the fuel injectors or fuel pressure regulator.
Can a dirty air filter trigger the P1112 code?
Yes, a clogged air filter can restrict airflow and cause the engine to run rich, potentially triggering the P1112 code.
How much does it cost to fix the P1112 code?
The cost depends on the underlying issue. Replacing an oxygen sensor typically costs $150-$400, while addressing fuel system or air intake issues may vary.
Will clearing the P1112 code make it go away permanently?
Clearing the code without addressing the root cause will only temporarily remove the check engine light. The issue must be fixed for the code to stay cleared.
Discuss the causes and fixes for P1112 Audi OBDII Code
Code P1112 Audi comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
