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P0112 2007 Nissan Sentra Code - Intake Air Temperature Circuit Low Input

Quick Answer

The P0112 diagnostic trouble code (DTC) for a 2007 Nissan Sentra indicates that there is a low input in the intake air temperature circuit. Common causes include Faulty intake air temperature sensor, Loose or damaged wiring/connectors in the intake air temperature circuit, Corrosion or dirt buildup on sensor contacts. 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 2007 Nissan Sentra indicates Intake Air Temperature Circuit Low Input.
Common causes
Common causes include Faulty intake air temperature sensor, Loose or damaged wiring/connectors in the intake air temperature circuit, Corrosion or dirt buildup on sensor contacts.
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 Aug 18, 2024
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Code P0112 2007 Nissan Sentra Description

The P0112 diagnostic trouble code (DTC) for a 2007 Nissan Sentra indicates that there is a low input in the intake air temperature circuit. This means that the Engine Control Module (ECM) has detected a lower than expected voltage signal from the intake air temperature sensor. The intake air temperature sensor is crucial for the ECM to accurately calculate the air-fuel mixture for optimal engine performance. When the sensor is reporting incorrect or implausible data, it can lead to a variety of issues affecting the vehicle's performance.

OBDII Code P0112 2007 Nissan Sentra - Intake Air Temperature Circuit Low Input
P0112 2007 Nissan Sentra Code - Intake Air Temperature Circuit Low Input

Common Causes of P0112 2007 Nissan Sentra

  1. Faulty intake air temperature sensor
  2. Loose or damaged wiring/connectors in the intake air temperature circuit
  3. Corrosion or dirt buildup on sensor contacts
  4. ECM software issues
  5. Intake air temperature sensor located too close to a heat source (exhaust manifold) causing false readings

Symptoms of P0112 2007 Nissan Sentra

  1. Reduced engine performance or power
  2. Poor fuel efficiency
  3. Rough idling or stalling
  4. Illuminated check engine light
  5. Difficulty starting the engine

How to Fix P0112 2007 Nissan Sentra

  1. Begin by inspecting the wiring and connectors in the intake air temperature circuit for any signs of damage or corrosion. Repair or replace as needed.
  2. Test the intake air temperature sensor using a multimeter to ensure it is functioning properly. Replace if necessary.
  3. Clear the DTC and reset the ECM to see if the code returns. If it does, further diagnostics may be required to pinpoint the issue.
  4. Check the location of the intake air temperature sensor to ensure it is not exposed to excessive heat sources that could skew readings.
  5. If all else fails, consult a professional mechanic or dealership for more advanced diagnostics and potential ECM reprogramming.

Cost to Fix P0112 2007 Nissan Sentra

The cost estimate for repairing a P0112 code on a 2007 Nissan Sentra can vary depending on the specific cause of the issue. On average, the cost of replacing the intake air temperature sensor and related parts can range from $100 to $200. Additional labor costs may apply, with typical rates ranging from $80 to $150 per hour. It's recommended to obtain quotes from local auto repair shops to get a more accurate estimate based on your location and vehicle specifics.

What does this mean?

Tech Notes for P0112 2007 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 2007 Nissan Sentra Code

1. What are the common symptoms of OBDII code P0112 on a 2007 Nissan Sentra?

The common symptoms of code P0112 on a 2007 Nissan Sentra include poor engine performance, rough idling, decreased fuel efficiency, and potential stalling.

2. What does the OBDII code P0112 indicate on a 2007 Nissan Sentra?

Code P0112 indicates that the Intake Air Temperature (IAT) sensor circuit has detected a low input signal, which may lead to incorrect readings of the air temperature entering the engine.

3. What are the possible causes of OBDII code P0112 on a 2007 Nissan Sentra?

Possible causes of code P0112 on a 2007 Nissan Sentra 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 circuit.

4. How can I diagnose the OBDII code P0112 on my 2007 Nissan Sentra?

To diagnose code P0112, you can start by checking the IAT sensor for any visible damage or corrosion, inspecting the wiring and connectors for any signs of wear or disconnection, and using a multimeter to test the sensor's resistance and voltage output.

5. Can I drive my 2007 Nissan Sentra with OBDII code P0112?

It is not recommended to drive your 2007 Nissan Sentra with an active P0112 code, as it can lead to engine performance issues and potential damage if left unresolved. It's best to address the underlying problem as soon as possible.

6. How can I repair OBDII code P0112 on my 2007 Nissan Sentra?

Repairing code P0112 on a 2007 Nissan Sentra may involve replacing the faulty IAT sensor, repairing or replacing damaged wiring or connectors, resetting the fault code with a scan tool, and ensuring proper connection and functioning of the sensor.

7. Will resetting the OBDII code P0112 on a 2007 Nissan Sentra make it go away permanently?

Resetting the OBDII code P0112 on a 2007 Nissan Sentra may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to return. It's important to diagnose and repair the root cause to prevent recurrence.

8. Can a dirty air filter cause OBDII code P0112 on a 2007 Nissan Sentra?

While a dirty air filter can impact the engine's performance, it is unlikely to directly cause code P0112. However, a clogged air filter may indirectly affect the intake air temperature readings and should be replaced as part of regular maintenance.

9. Is it safe to continue driving my 2007 Nissan Sentra if the OBDII code P0112 is intermittent?

If the OBDII code P0112 is intermittent on your 2007 Nissan Sentra, it may indicate an intermittent issue with the IAT sensor or circuit. While driving with intermittent codes is generally not recommended, you can monitor the situation closely and address the problem promptly.

10. How much does it typically cost to repair OBDII code P0112 on a 2007 Nissan Sentra?

The cost to repair OBDII code P0112 on a 2007 Nissan Sentra can vary depending on the root cause of the issue. Replacing the IAT sensor or repairing wiring may cost anywhere from $50 to $200, excluding labor charges if you take it to a mechanic.

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