AutoCodes – Honda – P0111 1999 Honda Civic

P0111 1999 Honda Civic Code - Intake Air Temperature Circuit Range/Performance Problem

Quick Answer

The Intake Air Temperature (IAT) sensor is built into mass air flow sensor or in some vehicles mounted to the air filter duct housing. Common causes include Faulty Intake Air Temperature (IAT) sensor, Dirty air filter, Intake Air Temperature (IAT) sensor harness is open or shorted. 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: P0111 1999 Honda Civic indicates Intake Air Temperature Circuit Range/Performance Problem.
Common causes: Common causes include Faulty Intake Air Temperature (IAT) sensor, Dirty air filter, Intake Air Temperature (IAT) sensor harness is open or shorted.
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 4,407

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0111 1999 Honda Civic Description

The Intake Air Temperature (IAT) sensor is built into mass air flow sensor or in some vehicles mounted to the air filter duct housing. The sensor detects intake air temperature and transmits a signal to the Engine Control Module (ECM). The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to the temperature rise. The Intake Air Temperature signal is used as an input for various systems in the vehicle.

OBDII Code P0111 1999 Honda Civic - Intake Air Temperature Circuit Range/Performance Problem - AutoCodes.com — P0111 1999 Honda Civic Code - Intake Air Temperature Circuit Range/Performance Problem

What does this mean?

What are the Possible Causes of the DTC P0111 1999 Honda Civic?

Faulty Intake Air Temperature (IAT) sensor
Dirty air filter
Intake Air Temperature (IAT) sensor harness is open or shorted
Intake Air Temperature (IAT) sensor circuit poor electrical connection

How to Fix the DTC P0111 1999 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 P0111 1999 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 P0111 1999 Honda Civic code?

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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 P0111 1999 Honda Civic Code

1. What are the common symptoms of OBDII code P0111 on a 1999 Honda Civic?

- Common symptoms include poor engine performance, rough idling, decreased fuel efficiency, and potential stalling.

2. What does the OBDII code P0111 indicate on a 1999 Honda Civic?

- OBDII code P0111 indicates an Intake Air Temperature Circuit Range/Performance Problem.

3. What are the possible causes of OBDII code P0111 on a 1999 Honda Civic?

- Possible causes include a faulty intake air temperature sensor, damaged wiring or connectors, intake air leaks, or issues with the engine control module.

4. How can I diagnose the cause of OBDII code P0111 on my 1999 Honda Civic?

- You can diagnose the issue by checking the intake air temperature sensor's resistance, inspecting wiring and connectors for damage, and verifying the sensor's readings with a scan tool.

5. Can a dirty air filter trigger OBDII code P0111 on a 1999 Honda Civic?

- Yes, a dirty air filter can disrupt the intake air temperature readings and potentially trigger OBDII code P0111.

6. How can I repair OBDII code P0111 on a 1999 Honda Civic?

- Repair options include replacing the intake air temperature sensor, repairing damaged wiring or connectors, fixing intake air leaks, or reprogramming the engine control module.

7. Is it safe to continue driving my 1999 Honda Civic with OBDII code P0111?

- It is not recommended to drive the vehicle with OBDII code P0111, as it can lead to further engine problems and potential vehicle stalling.

8. Can resetting the OBDII system clear OBDII code P0111 on a 1999 Honda Civic?

- Resetting the OBDII system may temporarily clear the code, but it will likely reappear if the underlying issue causing OBDII code P0111 is not addressed.

9. How much does it typically cost to repair OBDII code P0111 on a 1999 Honda Civic?

- The cost of repair can vary depending on the cause of the issue, but it may range from $100 to $300 for parts and labor.

10. Can a DIY enthusiast fix OBDII code P0111 on a 1999 Honda Civic?

- Depending on the individual's skills and knowledge, a DIY enthusiast may be able to diagnose and replace the intake air temperature sensor, but more complex issues may require professional assistance.