AutoCodes – Honda – P0112 2009 Honda Accord

P0112 2009 Honda Accord Code - Intake Air Temperature Circuit Low Voltage

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: P0112 2009 Honda Accord indicates Intake Air Temperature Circuit Low Voltage.
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 4,254

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 P0112 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 P0112 2009 Honda Accord - Intake Air Temperature Circuit Low Voltage - AutoCodes.com — P0112 2009 Honda Accord Code - Intake Air Temperature Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0112 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 P0112 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 P0112 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 P0112 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 P0112 2009 Honda Accord Code

1. What are the common symptoms of OBDII code P0112 on a 2009 Honda Accord?

The common symptoms include poor fuel efficiency, rough idling, and potential stalling of the engine.

2. What does the OBDII code P0112 indicate on a 2009 Honda Accord?

The code P0112 signifies that the Intake Air Temperature (IAT) sensor circuit is reporting a low voltage to the vehicle's engine control module.

3. What are the possible causes of OBDII code P0112 on a 2009 Honda Accord?

Possible causes include a faulty IAT sensor, damaged wiring or connectors in the IAT circuit, or a problem with the engine control module.

4. How can I diagnose the issue causing OBDII code P0112 on my 2009 Honda Accord?

You can use a multimeter to test the IAT sensor's resistance and voltage, check the wiring for any damages, and inspect the connectors for corrosion or loose connections.

5. Can a dirty air filter trigger OBDII code P0112 on a 2009 Honda Accord?

Yes, a dirty air filter can affect the IAT sensor readings, leading to the triggering of code P0112. It is recommended to check and replace the air filter if necessary.

6. How can I repair OBDII code P0112 on my 2009 Honda Accord?

Repair options include replacing the faulty IAT sensor, repairing damaged wiring or connectors, and resetting the trouble code with an OBDII scanner after the issue is fixed.

7. Is it safe to continue driving with OBDII code P0112 present on a 2009 Honda Accord?

It is not recommended to drive with the code present, as it can lead to decreased engine performance and potential long-term damage if left unresolved.

8. Can extreme weather conditions trigger OBDII code P0112 on a 2009 Honda Accord?

Extreme temperatures can impact the IAT sensor readings, potentially causing code P0112 to be triggered. Make sure to address any sensor issues promptly.

9. How much does it typically cost to repair OBDII code P0112 on a 2009 Honda Accord?

The cost of repair can vary depending on the exact cause of the issue. Replacing the IAT sensor or repairing wiring may cost between $100 to $300 at a repair shop.

10. Will resetting the trouble code make OBDII code P0112 disappear permanently on a 2009 Honda Accord?

Resetting the code will clear it temporarily, but if the underlying issue causing P0112 is not addressed, the code is likely to reappear during driving conditions.