AutoCodes – Honda – P1168 1998 Honda Civic

P1168 1998 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 1998 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.

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Code Popularity 2,294

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
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Code P1168 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 P1168 1998 Honda Civic - Air/Fuel Ratio Sensor Label Low Voltage - AutoCodes.com — P1168 1998 Honda Civic Code - Air/Fuel Ratio Sensor Label Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1168 1998 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 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 P1168 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 P1168 1998 Honda Civic code?

Need more information on how to fix the P1168 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 P1168 1998 Honda Civic Code

1. What are the common symptoms of OBDII code P1168 in a 1998 Honda Civic?

The common symptoms of OBDII code P1168 in a 1998 Honda Civic include poor fuel economy, rough idling, and difficulty starting the vehicle.

2. What does the OBDII code P1168 on a 1998 Honda Civic indicate?

OBDII code P1168 in a 1998 Honda Civic indicates that the Air/Fuel Ratio Sensor Label has detected low voltage.

3. What are the possible causes of OBDII code P1168 in a 1998 Honda Civic?

Possible causes of OBDII code P1168 in a 1998 Honda Civic include a faulty air/fuel ratio sensor, damaged wiring or connectors, or an issue with the sensor heater circuit.

4. How can I diagnose the OBDII code P1168 in my 1998 Honda Civic?

Diagnosing OBDII code P1168 in a 1998 Honda Civic involves checking the air/fuel ratio sensor for proper operation, inspecting the wiring and connectors for damage, and testing the sensor heater circuit.

5. Can I continue driving my 1998 Honda Civic with OBDII code P1168?

It is not recommended to continue driving your 1998 Honda Civic with OBDII code P1168, as it can lead to poor engine performance and potential damage if left unresolved.

6. How can I repair OBDII code P1168 in my 1998 Honda Civic?

To repair OBDII code P1168 in a 1998 Honda Civic, you may need to replace the air/fuel ratio sensor, repair any damaged wiring or connectors, or address issues with the sensor heater circuit.

7. Is it possible to reset the OBDII code P1168 in my 1998 Honda Civic?

Resetting OBDII code P1168 in a 1998 Honda Civic can be done using an OBDII scanner, but it is important to diagnose and resolve the underlying issue causing the code to prevent it from reoccurring.

8. How much does it cost to fix OBDII code P1168 in a 1998 Honda Civic?

The cost to fix OBDII code P1168 in a 1998 Honda Civic can vary depending on the specific issue causing the code, but it may involve replacing the air/fuel ratio sensor or addressing wiring/connectors, which can range from $100 to $300 or more.

9. Can a DIY enthusiast fix OBDII code P1168 in a 1998 Honda Civic?

A DIY enthusiast may be able to fix OBDII code P1168 in a 1998 Honda Civic if they have the necessary tools, knowledge, and experience working on automotive electrical systems.

10. How often does OBDII code P1168 occur in a 1998 Honda Civic?

OBDII code P1168 in a 1998 Honda Civic may occur infrequently, but it is important to address it promptly to prevent potential engine performance issues and ensure optimal vehicle operation.