AutoCodes – Nissan – P0112 2008 Nissan Maxima

P0112 2008 Nissan Maxima Code - Intake Air Temperature Circuit Low Input

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 2008 Nissan Maxima indicates Intake Air Temperature Circuit Low Input.
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 3,663

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 2008 Nissan Maxima 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 2008 Nissan Maxima - Intake Air Temperature Circuit Low Input - AutoCodes.com — P0112 2008 Nissan Maxima Code - Intake Air Temperature Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0112 2008 Nissan Maxima?

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 2008 Nissan Maxima?

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 2008 Nissan Maxima 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 2008 Nissan Maxima 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 2008 Nissan Maxima Code

1. What are the common symptoms of OBDII code P0112 on a 2008 Nissan Maxima?

- Common symptoms include poor fuel economy, rough idling, lack of power, and potentially stalling of the vehicle.

2. What does the P0112 code mean for a 2008 Nissan Maxima?

- The P0112 code indicates that the Intake Air Temperature (IAT) sensor circuit is registering a low input, which can impact the engine's performance.

3. What are the possible causes of the P0112 code on a 2008 Nissan Maxima?

- Potential causes include a faulty IAT sensor, damaged wiring or connectors in the IAT circuit, or issues with the engine control module (ECM).

4. How can I diagnose the P0112 code on my 2008 Nissan Maxima?

- Diagnosis typically involves checking the IAT sensor for proper operation, inspecting the wiring and connectors for damage, and using a scan tool to gather data from the ECM.

5. Can a dirty air filter trigger the P0112 code on a 2008 Nissan Maxima?

- While a dirty air filter can affect engine performance, it is unlikely to directly cause the P0112 code. Focus on checking the IAT sensor and its circuit first.

6. What are some DIY repair tips for addressing the P0112 code on a 2008 Nissan Maxima?

- DIYers can start by checking the IAT sensor's wiring and connectors for any visible damage or corrosion before considering sensor replacement if necessary.

7. Is it safe to drive with the P0112 code illuminated on a 2008 Nissan Maxima?

- It is generally not recommended to drive with the P0112 code present, as it can impact the engine's performance and fuel efficiency. Prompt attention to the issue is advisable.

8. Can a disconnected IAT sensor cause the P0112 code on a 2008 Nissan Maxima?

- Yes, a disconnected or faulty IAT sensor can trigger the P0112 code due to the ECM receiving a low input signal from the sensor.

9. How much does it typically cost to repair the P0112 code on a 2008 Nissan Maxima?

- The cost of repairing the P0112 code can vary depending on the root cause. DIY repairs may cost less, while professional repairs at a dealership or mechanic shop could range from $100 to $300 or more.

10. Will resetting the OBDII code clear the P0112 code on a 2008 Nissan Maxima?

- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the P0112 code is not addressed, the code is likely to reappear.