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P0112 2011 Nissan Sentra Code - Intake Air Temperature Circuit Low Input

Quick Answer

The P0112 diagnostic trouble code (DTC) for a 2011 Nissan Sentra indicates that there is a low input signal from the Intake Air Temperature (IAT) sensor circuit. Common causes include Faulty Intake Air Temperature (IAT) sensor, Wiring issues or damaged connectors in the IAT sensor circuit, Corrosion or contamination in the IAT sensor connector. 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 2011 Nissan Sentra indicates Intake Air Temperature Circuit Low Input.
Common causes
Common causes include Faulty Intake Air Temperature (IAT) sensor, Wiring issues or damaged connectors in the IAT sensor circuit, Corrosion or contamination in the IAT sensor connector.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0112 2011 Nissan Sentra Description

The P0112 diagnostic trouble code (DTC) for a 2011 Nissan Sentra indicates that there is a low input signal from the Intake Air Temperature (IAT) sensor circuit. The IAT sensor is a crucial component of the engine management system, as it measures the temperature of the air entering the engine. This information is used by the Engine Control Module (ECM) to adjust fuel delivery and ignition timing for optimal performance and efficiency.

OBDII Code P0112 2011 Nissan Sentra - Intake Air Temperature Circuit Low Input
P0112 2011 Nissan Sentra Code - Intake Air Temperature Circuit Low Input

Common Causes of P0112 2011 Nissan Sentra

  1. Faulty Intake Air Temperature (IAT) sensor
  2. Wiring issues or damaged connectors in the IAT sensor circuit
  3. Corrosion or contamination in the IAT sensor connector
  4. ECM software or hardware issues
  5. Intake air leaks near the sensor

Symptoms of P0112 2011 Nissan Sentra

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Hesitation or lack of power during acceleration
  4. Check Engine Light illuminated on the dashboard

How to Fix P0112 2011 Nissan Sentra

  1. Begin by visually inspecting the IAT sensor and its wiring for any visible damage or corrosion.
  2. Use a multimeter to test the resistance of the IAT sensor to determine if it is within the manufacturer's specified range.
  3. Check the wiring harness and connectors for continuity and repair any damaged wires or connectors.
  4. Clear the DTC using an OBD-II scanner and verify that the code does not return after driving the vehicle.
  5. If the issue persists, consider replacing the IAT sensor with a new, OEM-quality part.

Cost to Fix P0112 2011 Nissan Sentra

The cost of repairing a P0112 code on a 2011 Nissan Sentra can vary depending on the exact cause of the issue. In general, the price of a new IAT sensor ranges from $20 to $50, while labor costs for diagnosis and repair can range from $100 to $200. Overall, the total repair cost for resolving this issue typically falls between $120 and $250. However, it is important to note that labor rates and parts prices can vary based on location, vehicle make and model, and the repair shop chosen. It is advisable to contact local auto repair shops for a more accurate estimate.

What does this mean?

Tech Notes for P0112 2011 Nissan Sentra

Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compressed air or mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replace the mass air flow sensor.

When is the Code Detected?

An excessively low voltage from the sensor is sent to ECM.

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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 2011 Nissan Sentra Code

1. What does the OBDII code P0112 for a 2011 Nissan Sentra mean?

The P0112 code indicates a low input from the intake air temperature (IAT) sensor circuit in the 2011 Nissan Sentra.

2. What are the common symptoms of a P0112 code on a 2011 Nissan Sentra?

Common symptoms include poor engine performance, rough idling, decreased fuel efficiency, and in some cases, the Check Engine light may illuminate.

3. What are possible causes of the P0112 code on a 2011 Nissan Sentra?

Potential causes of the P0112 code include a faulty IAT sensor, damaged wiring or connectors in the IAT circuit, a malfunctioning PCM (powertrain control module), or issues with the intake air temperature sensor itself.

4. How do I diagnose the P0112 code on my 2011 Nissan Sentra?

Diagnosing the P0112 code involves using an OBDII scanner to retrieve the code, inspecting the IAT sensor and its wiring for damage, checking the sensor's resistance, and testing the PCM's functionality.

5. Can I still drive my 2011 Nissan Sentra with a P0112 code?

It is not recommended to drive your vehicle with a P0112 code as it can lead to poor engine performance and potential damage over time. It's best to address the issue promptly.

6. How can I repair a P0112 code on a 2011 Nissan Sentra?

Repairing a P0112 code may involve replacing the IAT sensor, repairing or replacing damaged wiring or connectors, resetting the PCM, or seeking professional help for further diagnosis and repair.

7. Is it possible to reset the P0112 code on a 2011 Nissan Sentra without fixing the issue?

While you can clear the code using an OBDII scanner, the underlying problem causing the P0112 code will persist until properly addressed. Simply resetting the code without fixing the issue may lead to further complications.

8. Can a dirty air filter cause a P0112 code on a 2011 Nissan Sentra?

A dirty air filter can indirectly affect the intake air temperature, but it is not a common cause of the P0112 code. It's important to check the IAT sensor and related components for issues first.

9. How much does it typically cost to repair a P0112 code on a 2011 Nissan Sentra?

The cost of repairing a P0112 code can vary depending on the specific cause of the issue. Costs may include parts such as the IAT sensor, labor for diagnosis and repair, and any additional components that need replacing.

10. Will a P0112 code on a 2011 Nissan Sentra affect the vehicle's emissions?

A P0112 code may impact the vehicle's emissions due to inefficient fuel combustion resulting from incorrect intake air temperature readings. It's essential to address the issue to ensure optimal engine performance and emission control.

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