Engine-CodesAcura – P1112 Acura

P1112 Acura Code - Intake Air Temperature Sensor Circuit Intermittent Low Voltage

Quick Answer

The P1112 Acura code indicates a problem with the Intake Air Temperature (IAT) sensor circuit having intermittent low voltage. Common causes include Faulty Intake Air Temperature (IAT) sensor, Damaged wiring or connectors in the IAT sensor circuit, Corrosion or poor connections in the sensor circuit. 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
P1112 Acura indicates Intake Air Temperature Sensor Circuit Intermittent Low Voltage.
Common causes
Common causes include Faulty Intake Air Temperature (IAT) sensor, Damaged wiring or connectors in the IAT sensor circuit, Corrosion or poor connections in the sensor circuit.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1112 Acura Description

The P1112 Acura code indicates a problem with the Intake Air Temperature (IAT) sensor circuit having intermittent low voltage. The IAT sensor plays a crucial role in the engine's performance by measuring the temperature of the incoming air and providing this data to the engine control module (ECM). The ECM uses this information to adjust the air-fuel mixture for optimal combustion and engine performance. When the voltage from the IAT sensor is lower than expected intermittently, it can lead to issues with engine performance, fuel efficiency, and emissions.

OBDII Code P1112 Acura - Intake Air Temperature Sensor Circuit Intermittent Low Voltage
P1112 Acura Code - Intake Air Temperature Sensor Circuit Intermittent Low Voltage

Common Causes of P1112 Acura

  1. Faulty Intake Air Temperature (IAT) sensor
  2. Damaged wiring or connectors in the IAT sensor circuit
  3. Corrosion or poor connections in the sensor circuit
  4. ECM malfunction or software issues
  5. Intake air leaks affecting sensor readings

Symptoms of P1112 Acura

  1. Check Engine Light illuminated
  2. Decreased fuel efficiency
  3. Rough idling or engine misfires
  4. Poor acceleration
  5. Engine stalling or hesitation

How to Fix P1112 Acura

  1. Begin by diagnosing the issue using a scan tool to retrieve the fault code and data related to the IAT sensor voltage.
  2. Inspect the IAT sensor, wiring, and connectors for any visible damage or corrosion. Replace any faulty components.
  3. Test the IAT sensor using a multimeter to ensure it is functioning within specifications.
  4. Check for any intake air leaks that could be affecting the sensor readings and repair as necessary.
  5. Clear the fault code and reset the ECM to see if the issue has been resolved. Test drive the vehicle to confirm proper operation.

Cost to Fix P1112 Acura

The cost of repairing the Intake Air Temperature Sensor Circuit Intermittent Low Voltage issue can vary depending on the specific cause of the problem and the labor rates in your area. On average, the repair could range from $100 to $300, including parts and labor. Keep in mind that additional diagnostic time may be needed to accurately pinpoint the cause of the fault, which can impact the overall cost. It is recommended to consult with a trusted mechanic or repair shop to get a more precise estimate based on your vehicle's make and model. Labor rates typically range from $80 to $150 per hour, but this can vary based on location and the type of repair facility.

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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.

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