AutoCodes – Honda – P0111 2009 Honda Accord

P0111 2009 Honda Accord 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 2009 Honda Accord 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 5,974

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 2009 Honda Accord 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 2009 Honda Accord - Intake Air Temperature Circuit Range/Performance Problem - AutoCodes.com — P0111 2009 Honda Accord Code - Intake Air Temperature Circuit Range/Performance Problem

What does this mean?

What are the Possible Causes of the DTC P0111 2009 Honda Accord?

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 2009 Honda Accord?

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 2009 Honda Accord 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 2009 Honda Accord 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 2009 Honda Accord Code

1. What does OBDII code P0111 mean for my 2009 Honda Accord?

Code P0111 indicates an issue with the Intake Air Temperature (IAT) sensor circuit, specifically a range/performance problem.

2. What are the common symptoms of a P0111 error code in a 2009 Honda Accord?

Common symptoms include poor fuel economy, rough idling, engine stalling, and potential issues with acceleration and overall engine performance.

3. What are the possible causes of a P0111 code in a 2009 Honda Accord?

Potential causes include a faulty IAT sensor, damaged sensor wiring, loose connections, or issues with the sensor's circuit.

4. How can I diagnose a P0111 error code in my 2009 Honda Accord?

Diagnose the code by checking the IAT sensor and its wiring for any visible damage or corrosion. You can also use a multimeter to test the sensor's resistance and voltage output.

5. Can I drive my 2009 Honda Accord with a P0111 code?

It is not recommended to drive your vehicle with a P0111 code, as it can lead to decreased fuel efficiency and potential engine performance issues.

6. How can I fix a P0111 code in my 2009 Honda Accord?

To fix a P0111 code, you may need to replace the IAT sensor, repair any damaged wiring or connections, and clear the error code using an OBDII scanner.

7. Are there any DIY tips for troubleshooting a P0111 code in a 2009 Honda Accord?

You can start by visually inspecting the IAT sensor and its wiring for any obvious issues before moving on to more in-depth diagnostic steps.

8. Can a dirty air filter trigger a P0111 error code in a 2009 Honda Accord?

A dirty air filter may indirectly contribute to a P0111 code by affecting the intake air temperature readings, but it is not the primary cause of this specific error.

9. How much does it typically cost to repair a P0111 code in a 2009 Honda Accord?

The cost of repairing a P0111 code can vary depending on the specific issue, but it may range from $100 to $300 for parts and labor.

10. Will a P0111 code in my 2009 Honda Accord cause any long-term damage if left unresolved?

While driving with a P0111 code may not immediately cause severe damage, prolonged neglect can lead to decreased engine efficiency and potential long-term issues, so it's best to address the problem promptly.