AutoCodes – Honda – P1168 2000 Honda Civic

P1168 2000 Honda Civic Code - Air/Fuel Ratio Sensor Label Low Voltage

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 Faulty Air Fuel Ratio Sensor, Air Fuel Ratio Sensor harness is open or shorted, Air Fuel Ratio Sensor 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: P1168 2000 Honda Civic indicates Air/Fuel Ratio Sensor Label Low Voltage.
Common causes: Common causes include Faulty Air Fuel Ratio Sensor, Air Fuel Ratio Sensor harness is open or shorted, Air Fuel Ratio Sensor 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.

Save to My Repairs Step-by-Step Diagnostic Guide My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,605

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 06, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1168 2000 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 P1168 2000 Honda Civic - Air/Fuel Ratio Sensor Label Low Voltage - AutoCodes.com — P1168 2000 Honda Civic Code - Air/Fuel Ratio Sensor Label Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1168 2000 Honda Civic?

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

How to Fix the DTC P1168 2000 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 P1168 2000 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 P1168 2000 Honda Civic code?

Need more information on how to fix the P1168 2000 Honda Civic code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1168 2000 Honda Civic 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 P1168 2000 Honda Civic Code

What are the common symptoms of OBDII code P1168 on a 2000 Honda Civic?

The common symptoms of OBDII code P1168 on a 2000 Honda Civic include poor fuel economy, rough idling, and a noticeable decrease in engine performance.

What are the possible causes of OBDII code P1168 on a 2000 Honda Civic?

The possible causes of OBDII code P1168 on a 2000 Honda Civic include a faulty air/fuel ratio sensor, damaged wiring or connectors related to the sensor, or an issue with the sensor's heater circuit.

How can I diagnose the issue causing OBDII code P1168 on my 2000 Honda Civic?

To diagnose the issue causing OBDII code P1168 on your 2000 Honda Civic, you can use a scan tool to read the code and check the sensor's voltage output. Additionally, inspect the sensor's wiring and connectors for any signs of damage.

What is the recommended repair for OBDII code P1168 on a 2000 Honda Civic?

The recommended repair for OBDII code P1168 on a 2000 Honda Civic is to replace the air/fuel ratio sensor. Ensure that the new sensor is compatible with your vehicle's make and model.

Can I drive my 2000 Honda Civic with OBDII code P1168?

It is not recommended to drive your 2000 Honda Civic with OBDII code P1168, as it can lead to further damage to the engine and negatively impact fuel efficiency. It's best to address the issue promptly.

Are there any DIY tips for fixing OBDII code P1168 on a 2000 Honda Civic?

While replacing the air/fuel ratio sensor for OBDII code P1168 on a 2000 Honda Civic is recommended, it's essential to ensure proper installation and connection of the new sensor. If unsure, seek professional help.

What is the role of the air/fuel ratio sensor in a 2000 Honda Civic?

The air/fuel ratio sensor in a 2000 Honda Civic measures the oxygen content in the exhaust gases, helping the engine control unit adjust the air-fuel mixture for optimal combustion and fuel efficiency.

Why is the OBDII code P1168 labeled as "Air/Fuel Ratio Sensor Label Low Voltage" for a 2000 Honda Civic?

The OBDII code P1168 is labeled as "Air/Fuel Ratio Sensor Label Low Voltage" for a 2000 Honda Civic because it indicates that the air/fuel ratio sensor is sending a lower than expected voltage signal to the engine control unit.

What are the long-term consequences of ignoring OBDII code P1168 on a 2000 Honda Civic?

Ignoring OBDII code P1168 on a 2000 Honda Civic can lead to decreased fuel efficiency, engine misfires, and potential damage to the catalytic converter over time. It's crucial to address the issue promptly.