P0112 2005 Nissan Altima Sedan Code - Intake Air Temperature Circuit Low Input
Quick Answer
The Intake Air Temperature (IAT) sensor is variable temperature sensitive resistor that measures the temperature of the air in the intake system. 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 2005 Nissan Altima Sedan 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.
Code P0112 2005 Nissan Altima Sedan Description
IAT sensor values are used by the ECM processor to assist with the calculation of idle speed, fuel mixture and spark advance.
Inaccurate voltages from the IAT sensor may affect pulse-width, idle quality, and tail pipe emissions. Intermittent signals may cause hesitation, stumble and surging. If an IAT sensor failure accompanies an Engine Coolant Temperature (ECT) sensor failure, cooling fan operation may also be affected.
The Intake Air Temperature (IAT) sensor is part of the Mass Air Flow (MAF) sensor (Air Flow Meter).
What are the Possible Causes of the DTC P0112 2005 Nissan Altima Sedan?
- 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 2005 Nissan Altima Sedan?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0112 2005 Nissan Altima Sedan 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.
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Frequently Asked Questions about P0112 2005 Nissan Altima Sedan Code
1. What are the common symptoms of OBDII code P0112 in a 2005 Nissan Altima Sedan?
- Common symptoms include poor engine performance, rough idling, decreased fuel efficiency, and potential stalling.
2. What does the OBDII code P0112 "Intake Air Temperature Circuit Low Input" mean for a 2005 Nissan Altima Sedan?
- The code indicates that the intake air temperature sensor is reporting a lower than expected voltage to the engine control module.
3. What are the possible causes of OBDII code P0112 in a 2005 Nissan Altima Sedan?
- Possible causes include a faulty intake air temperature sensor, damaged wiring or connectors, a malfunctioning engine control module, or issues with the intake air temperature sensor circuit.
4. How can I diagnose the OBDII code P0112 in my 2005 Nissan Altima Sedan?
- You can diagnose the issue by checking the intake air temperature sensor for proper voltage, inspecting the sensor's wiring and connectors for damage, and using an OBDII scanner to reset the code and monitor sensor readings.
5. Can I drive my 2005 Nissan Altima Sedan with OBDII code P0112?
- It is not recommended to drive the vehicle with this code present as it can lead to poor engine performance and potential damage if left unresolved.
6. How can I repair OBDII code P0112 in my 2005 Nissan Altima Sedan?
- Repair options include replacing the intake air temperature sensor, repairing damaged wiring or connectors, or consulting a professional mechanic for further diagnosis and repair.
7. Is OBDII code P0112 a serious issue in a 2005 Nissan Altima Sedan?
- While the code may not cause immediate harm to the vehicle, it should be addressed promptly to prevent potential engine performance issues and further damage.
8. Can a DIY enthusiast fix OBDII code P0112 in a 2005 Nissan Altima Sedan?
- Depending on the skill level and tools available, a DIY enthusiast may be able to address the issue by replacing the intake air temperature sensor or repairing wiring, but professional assistance may be needed for more complex repairs.
9. Will resetting the OBDII code P0112 in my 2005 Nissan Altima Sedan make it go away permanently?
- Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to return after driving the vehicle for some time.
10. How much does it typically cost to repair OBDII code P0112 in a 2005 Nissan Altima Sedan?
- The cost of repair can vary depending on the specific cause of the issue, but it may range from around $100 to $300 for parts and labor.
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