AutoCodes – Honda – P1165 1998 Honda Civic

P1165 1998 Honda Civic Code - Air/Fuel Ratio Sensor 1 Circuit Range/Performance

Quick Answer

The Air/Fuel Ratio (A/F) sensor 1 is installed in the exhaust system and detects oxygen content in the exhaust gas. Common causes include Air/Fuel Ratio Sensor 1 harness is open or shorted, Air/Fuel Ratio Sensor 1 circuit poor electrical connection, Faulty Air/Fuel Ratio Sensor 1. 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 1998 Honda Civic indicates Air/Fuel Ratio Sensor 1 Circuit Range/Performance.
Common causes: Common causes include Air/Fuel Ratio Sensor 1 harness is open or shorted, Air/Fuel Ratio Sensor 1 circuit poor electrical connection, Faulty Air/Fuel Ratio Sensor 1.
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 2,846

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 04, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1165 1998 Honda Civic Description

The Air/Fuel Ratio (A/F) sensor 1 is installed in the exhaust system and detects oxygen content in the exhaust gas. The A/F sensor transmits output voltage to the Engine Control Module (ECM). A heater for the sensor element is embedded in the A/F sensor (sensor 1). It is activated and heats the sensor to stabilize and speed the detection of oxygen content by controlling current flowing through the heater. An increase in the current levels off as the applied voltage to the element electrode reaches a certain range because the amount of oxygen which is led through the diffusion layer is limited. The current amperage is proportional to oxygen content in the exhaust gas, so the air/fuel ratio is detected by the measurement of the current amperage. The ECM compares a set target air/fuel ratio with the detected air/fuel ratio and controls the fuel injection timing.
If the A/F sensor (sensor 1) voltage is low, the air/fuel ratio is lean, and the ECM uses A/F feedback control to issue a Rich command. If the A/F sensor (sensor 1) voltage is high, the air/fuel ratio is rich, and the ECM uses A/F feedback control to issue a Lean command.

OBDII Code P1165 1998 Honda Civic - Air/Fuel Ratio Sensor 1 Circuit Range/Performance - AutoCodes.com — P1165 1998 Honda Civic Code - Air/Fuel Ratio Sensor 1 Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC P1165 1998 Honda Civic?

Air/Fuel Ratio Sensor 1 harness is open or shorted
Air/Fuel Ratio Sensor 1 circuit poor electrical connection
Faulty Air/Fuel Ratio Sensor 1

How to Fix the DTC P1165 1998 Honda Civic?

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 P1165 1998 Honda Civic 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 P1165 1998 Honda Civic code?

Need more information on how to fix the P1165 1998 Honda Civic code? Get Access to Factory Service Manuals

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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.

Frequently Asked Questions about P1165 1998 Honda Civic Code

1. What are common symptoms of OBDII code P1165 on a 1998 Honda Civic?

- Common symptoms may include poor fuel economy, rough idling, engine hesitation, or a check engine light.

2. What causes the OBDII code P1165 on a 1998 Honda Civic?

- The code P1165 typically indicates a problem with the Air/Fuel Ratio Sensor 1 Circuit, often caused by a faulty sensor, wiring issues, or a problem with the sensor's heater circuit.

3. How can I diagnose the OBDII code P1165 on a 1998 Honda Civic?

- Diagnosing the code may involve checking the sensor's wiring, inspecting the sensor for damage, testing the sensor's heater circuit, and using a scan tool to monitor sensor data.

4. Can I still drive my 1998 Honda Civic with the P1165 code?

- It's generally not recommended to drive with the P1165 code present, as it can affect the vehicle's performance and fuel efficiency. It's best to address the issue promptly.

5. How do I repair the OBDII code P1165 on my 1998 Honda Civic?

- Repairing the P1165 code may involve replacing the Air/Fuel Ratio Sensor 1, repairing any damaged wiring, or addressing any issues with the sensor's heater circuit.

6. Are there any DIY tips for fixing the P1165 code on a 1998 Honda Civic?

- DIY tips include ensuring the sensor is securely connected, checking for any visible damage to the sensor or wiring, and following a repair manual for specific testing procedures.

7. How much does it cost to fix the OBDII code P1165 on a 1998 Honda Civic?

- The cost of fixing the P1165 code can vary depending on the cause of the issue. Replacing the sensor or repairing wiring may cost a few hundred dollars at a mechanic's shop.

8. Can a bad Air/Fuel Ratio Sensor cause other issues besides the P1165 code?

- Yes, a faulty Air/Fuel Ratio Sensor can lead to poor engine performance, reduced fuel efficiency, and potentially cause damage to the catalytic converter over time.

9. How often should the Air/Fuel Ratio Sensor be replaced in a 1998 Honda Civic?

- The sensor typically lasts for a few years, but it's recommended to follow the manufacturer's maintenance schedule and replace it as needed to ensure optimal engine performance.

10. Will resetting the OBDII code P1165 on a 1998 Honda Civic make it go away permanently?

- Resetting the code may temporarily turn off the check engine light, but if the underlying issue causing the code is not fixed, the code is likely to reappear. It's crucial to address the root cause of the problem.