AutoCodes – Acura – P0111 Acura

P0111 Acura Code - Intake Air Temperature Sensor 1 Circuit Range/Performance Problem

Quick Answer

The Intake Air Temperature (IAT) Sensor 1 is a thermistor that detects intake air temperature, and it is used for air/fuel ratio feedback control to compensate for the atmospheric density fluctuations that accompany changes in intake air temperature. Common causes include Faulty Intake Air Temperature (IAT) Sensor 1, Intake Air Temperature Sensor 1 harness is open or shorted, Intake Air Temperature Sensor 1 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
P0111 Acura indicates Intake Air Temperature Sensor 1 Circuit Range/Performance Problem.
Common causes
Common causes include Faulty Intake Air Temperature (IAT) Sensor 1, Intake Air Temperature Sensor 1 harness is open or shorted, Intake Air Temperature Sensor 1 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 9,636
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 31, 2023
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Code P0111 Acura Description

The Intake Air Temperature (IAT) Sensor 1 is a thermistor that detects intake air temperature, and it is used for air/fuel ratio feedback control to compensate for the atmospheric density fluctuations that accompany changes in intake air temperature. IAT Sensor 1 resistance varies depending on temperature. The output voltage and the sensor resistance increase as the intake air temperature decreases. Conversely, the output voltage and the sensor resistance decrease as the intake air temperature increases. If the intake air temperature is a specified value for a specified time, the Powertrain Control Module (PCM) detects a malfunction and stores a Diagnostic Trouble Code (DTC).
OBDII Code P0111 Acura - Intake Air Temperature Sensor 1 Circuit Range/Performance Problem - AutoCodes.com
P0111 Acura Code - Intake Air Temperature Sensor 1 Circuit Range/Performance Problem

What are the Possible Causes of the DTC P0111 Acura?

  • Faulty Intake Air Temperature (IAT) Sensor 1
  • Intake Air Temperature Sensor 1 harness is open or shorted
  • Intake Air Temperature Sensor 1 circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0111 Acura?

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 Acura 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 Acura 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 Acura Code

1. What are the common symptoms of OBDII code P0111 in an Acura?

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

2. What causes the OBDII code P0111 in an Acura?

- The most common cause is a faulty intake air temperature sensor, issues with the sensor wiring, or a problem with the sensor circuit.

3. How can I diagnose the intake air temperature sensor in my Acura to address code P0111?

- You can use a multimeter to test the sensor's resistance or voltage, visually inspect the sensor and wiring for damage, and check for any loose connections.

4. Can a dirty air filter trigger OBDII code P0111 in an Acura?

- Yes, a dirty or clogged air filter can disrupt the intake air temperature sensor readings and potentially lead to code P0111 being triggered.

5. Are there any quick DIY fixes for resolving OBDII code P0111 in an Acura?

- You can try cleaning the intake air temperature sensor with electronic cleaner, checking and cleaning the sensor connector, or replacing a damaged sensor.

6. How important is it to address OBDII code P0111 promptly in an Acura?

- It is recommended to address code P0111 promptly as ignoring it can lead to further engine issues, reduced performance, and potentially higher repair costs.

7. Can a malfunctioning intake air temperature sensor affect the overall performance of my Acura?

- Yes, a malfunctioning sensor can impact fuel delivery, ignition timing, and overall engine performance, leading to issues like rough idling and decreased power.

8. Is it safe to drive my Acura with OBDII code P0111 present?

- It is generally safe to drive with code P0111 present, but it is advisable to address the issue promptly to prevent any potential long-term damage to the engine.

9. How much does it typically cost to repair OBDII code P0111 in an Acura?

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

10. Can resetting the OBDII system on my Acura make code P0111 disappear temporarily?

- Resetting the system may temporarily clear the code, but it will likely reappear if the underlying issue with the intake air temperature sensor is not addressed.

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