Engine-CodesAcura – P1163 Acura

P1163 Acura Code - Air/Fuel Ratio Sensor 1 Slow Response

Quick Answer

When the diagnostic trouble code P1163 appears on an Acura vehicle, it signifies an issue with the Air/Fuel Ratio Sensor 1, indicating a slow response from the sensor. Common causes include Faulty Air/Fuel Ratio Sensor 1, Wiring or connector issues, Vacuum leaks. 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
P1163 Acura indicates Air/Fuel Ratio Sensor 1 Slow Response.
Common causes
Common causes include Faulty Air/Fuel Ratio Sensor 1, Wiring or connector issues, Vacuum leaks.
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.
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code P1163 Acura Description

When the diagnostic trouble code P1163 appears on an Acura vehicle, it signifies an issue with the Air/Fuel Ratio Sensor 1, indicating a slow response from the sensor. The Air/Fuel Ratio Sensor 1, also known as the upstream oxygen sensor, plays a crucial role in monitoring and adjusting the air-fuel mixture in the engine for optimal combustion. This sensor provides feedback to the engine control module (ECM) to ensure that the engine is running efficiently and within the specified parameters.

OBDII Code P1163 Acura - Air/Fuel Ratio Sensor 1 Slow Response
P1163 Acura Code - Air/Fuel Ratio Sensor 1 Slow Response

Common Causes of P1163 Acura

  1. Faulty Air/Fuel Ratio Sensor 1
  2. Wiring or connector issues
  3. Vacuum leaks
  4. Exhaust system leaks
  5. ECM malfunction

Symptoms of P1163 Acura

  1. Decreased fuel efficiency
  2. Engine hesitation or surging
  3. Rough idling or stalling
  4. Check Engine Light illuminated
  5. Increased emissions

How to Fix P1163 Acura

  1. Diagnose the issue by using a scan tool to retrieve the trouble code and check the sensor's response time.
  2. Inspect the wiring and connectors for any damage or corrosion and repair or replace as needed.
  3. Check for vacuum leaks and repair any leaks found.
  4. Inspect the exhaust system for leaks and repair or replace any damaged components.
  5. If the sensor itself is faulty, replace the Air/Fuel Ratio Sensor 1 with a new one.

Cost to Fix P1163 Acura

The cost of repairing a P1163 diagnostic trouble code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the cost of replacing an Air/Fuel Ratio Sensor 1 can range from $150 to $300 for the part alone. Labor costs can add another $100 to $200, bringing the total repair cost to approximately $250 to $500. Keep in mind that additional repairs or diagnostic tests may be necessary, so it's advisable to consult with a professional mechanic for a more accurate cost estimate based on your vehicle's specific needs.

When is the Code Detected?

If the element is not activated or the Engine Control Module (ECM) terminal voltage is a set value or less for at least a set time period when the power is drawn to the A/F sensor (sensor 1) heater, a malfunction is detected and the code is stored.

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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.

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