P1165 Acura Code - Air/Fuel Ratio Sensor 1 Circuit Range/Performance
Quick Answer
The P1165 diagnostic trouble code (DTC) for Acura vehicles indicates a problem with the Air/Fuel Ratio Sensor 1 Circuit Range/Performance. Common causes include Faulty air/fuel ratio sensor, Wiring or connector issues, Vacuum leak in the intake system. 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
- P1165 Acura indicates Air/Fuel Ratio Sensor 1 Circuit Range/Performance.
- Common causes
- Common causes include Faulty air/fuel ratio sensor, Wiring or connector issues, Vacuum leak in the intake system.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1165 Acura Description
The P1165 diagnostic trouble code (DTC) for Acura vehicles indicates a problem with the Air/Fuel Ratio Sensor 1 Circuit Range/Performance. This sensor is responsible for monitoring the air-fuel mixture in the exhaust gases and sending feedback to the engine control module (ECM) to adjust fuel delivery accordingly. When the sensor detects that the air-fuel ratio is outside of the expected range, it triggers the P1165 code.
Common Causes of P1165 Acura
- Faulty air/fuel ratio sensor
- Wiring or connector issues
- Vacuum leak in the intake system
- Clogged fuel injector
- ECM malfunction
Symptoms of P1165 Acura
- Poor fuel economy
- Rough idling or stalling
- Engine hesitation or misfire
- Check Engine Light illuminated
- Increased emissions
How to Fix P1165 Acura
- Diagnose the issue by using a scan tool to read the DTC and monitor live data from the air/fuel ratio sensor.
- Inspect the wiring and connectors for any damage or corrosion. Repair or replace as needed.
- Check for vacuum leaks in the intake system and repair any leaks found.
- Test the fuel injectors for proper operation and clean or replace if necessary.
- If the issue persists, replace the air/fuel ratio sensor and reset the ECM to clear the code.
Cost to Fix P1165 Acura
The cost of repairing a P1165 code on an Acura vehicle can vary depending on the exact cause of the issue and the labor rates in your area. Generally, the cost of replacing an air/fuel ratio sensor can range from $150 to $300, including parts and labor. However, if additional repairs or diagnosis are needed, the total cost could be higher. It is recommended to consult with a qualified mechanic or dealership for an accurate estimate based on your specific vehicle. Labor rates typically range from $80 to $150 per hour, but can vary based on location and shop.
When is the Code Detected?
Need more information about the P1165 Acura code?
Need more information on how to fix the P1165 Acura code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1165 Acura code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1165 Acura Code
No Frequently Asked Questions about P1165 Acura Code found.
Discuss the causes and fixes for P1165 Acura OBDII Code
Code P1165 Acura 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.