Nissan Error P0113: Intake Air Temperature Sensor Circuit Malfunction

Error code P0113 on cars Nissan - one of the most common problems associated with the engine management system. It signals a high signal level in the circuit Intake air temperature (IAT) sensor, which can lead to improper engine operation, increased fuel consumption and even difficult starting. Unlike critical errors like P0300 (misfires), P0113 is often ignored by drivers until serious symptoms occur, such as loss of power or jerky acceleration..

IAT (Intake Air Temperature) sensor in Nissan integrated into MAF sensor (mass air flow sensor) or installed separately depending on the model. Its task is to transmit data on the temperature of the incoming air to the ECU to adjust the fuel mixture. When the sensor signal is outside the acceptable range (usually above 4.9 V), the control unit records an error P0113 and can put the engine into emergency mode. In this article we will look at how to accurately diagnose the problem, which models Nissan most vulnerable, and what to do to fix the problem - from simple cleaning to replacing components.

What does error P0113 mean on Nissan: code decoding

Code P0113 in the OBD-II system means: "Intake Air Temperature Sensor 1 Circuit High Input" - that is high signal level in the intake air temperature sensor circuit. Translated into practice, this means that the ECU receives a voltage from the sensor that exceeds the calculated values ​​for the current air temperature.

Normal IAT sensor performance:

• 🌡️ When 0°C — voltage ~ 3.0–3.5 V
• 🌡️ When 20°C — ~ 2.5–3.0 V
• 🌡️ When 40°C — ~ 1.5–2.0 V
• ⚡ Maximum permissible voltage (in case of a break or short circuit) — 4.5–5.0 V

When the ECU detects voltage higher 4.9 V, he interprets this as open circuit or short circuit to positive. As a result:

• ⚠️ The control unit uses spare data (usually a fixed value 20°C), which leads to a suboptimal fuel mixture.
• 🛢️ Fuel consumption increases by 5–15%.
• 🚗 The engine can work with failures at idle speed or when pressing the gas sharply.

Nissan Models Most Affected by P0113

Error P0113 found on most models Nissan with injection engines, but there are a number of cars where it occurs more often due to design features or typical wiring problems. The table below contains data on the most vulnerable models and their “weak points”:

Model	Years of manufacture	Typical cause P0113	Additional symptoms
Nissan Qashqai (J10, J11)	2007–2021	Oxidation of contacts in the MAF sensor connector, cracks in the air duct corrugation	Floating speed, error P0100 (MAF)
Nissan X-Trail (T31, T32)	2007–2020	Damage to wiring under the hood (chafing on brackets)	Often accompanied P0118 (coolant temperature sensor)
Nissan Juke (F15)	2010–2019	Contamination of the MAF sensor with oil vapors (a problem with turbocharged engines)	Jerking during acceleration, black smoke from the exhaust
Nissan Almera (G15)	2012–2022	Poor quality IAT sensor (factory defective)	Error appears on cold start
Nissan Navara (D40)	2005–2015	Contact corrosion in wiring harness (humid climate)	Accompanied P0112 (low IAT signal)

If your model is not listed, it does not mean there is an error P0113 you are not in danger. For example, on Nissan Teana (J32) or Murano (Z51) the problem often occurs after unqualified repairs, when the insulation of the sensor wires is damaged. It is important to consider climatic conditions: in regions with high humidity (for example, Primorsky Krai), oxidation of contacts occurs in 2–3 times fasterthan in dry climates.

Causes of error P0113: from simple to complex

Diagnosis of the error P0113 should begin with checking the most probable causes, so as not to waste time on complex procedures. Below is a list of possible malfunctions, sorted by frequency of occurrence:

1. IAT/MAF sensor dirty — dust, oil deposits or insects disrupt heat exchange, distorting the readings.
2. Wiring damage - chafing of insulation, breakage or short circuit to +12V.
3. Oxidation of contacts in the sensor or ECU connector (especially important for Qashqai And X-Trail).
4. Malfunction of the sensor itself — internal break or failure of the thermistor.
5. Problems with the ECU - rare, but possible (for example, after unsuccessful chip tuning).

Particular attention should be paid condition of air ducts. On many Nissan (especially with mileage >100 thousand km) the corrugation between the air filter and the throttle cracks, allowing unfiltered air to pass through. This leads to accelerated contamination of the IAT sensor and false errors.

How to distinguish a dirty sensor from a faulty one?

If, after cleaning the IAT sensor with alcohol or a special cleaner (for example, Liqui Moly Luftmassensensor-Reiniger) error P0113 disappears, but returns after 1–2 weeks - the problem is crankcase ventilation system (oil gets into the air ducts). In this case, the PCV valve needs to be cleaned and the oil separator replaced.

Diagnosing error P0113: step-by-step instructions

For an accurate diagnosis you will need multimeter (preferably with temperature measurement function), OBD-II scanner and a basic set of tools. Follow the algorithm:

Disconnect the battery for 10 minutes (reset errors)

Visually check the IAT sensor connector for oxidation

Prepare the multimeter in "20V DC" mode

Download the pinout manual for your model -->

Step 1: Checking the IAT Sensor

Intake air temperature sensor Nissan usually located:

• 🔧In the building MAF sensor (on most petrol models).
• 🔧 Separately in the intake manifold (on diesels and older engines).

How to check:

1. Disconnect the sensor connector.
2. Connect a multimeter to the sensor contacts (usually 1 - signal, 2 - mass, but check the diagram!).
3. Measure resistance at different temperatures:
   • 🌡️ 0°C — ~ 4–6 kOhm
   • 🌡️ 20°C — ~ 2–3 kOhm
   • 🌡️ 40°C — ~ 1–1.5 kOhm

If the resistance does not change or is equal 0/∞ - the sensor is faulty.

Step 2: Check Wiring

An open or short circuit in the sensor circuit is the second most common reason P0113. Proceed like this:

1. Disconnect the ECU connector (usually under the dashboard on the passenger side).
2. Ring the circuit from the sensor to the ECU:
   • 🔋 Food (5V) - between the sensor contact and pin 45 ECU (check the diagram!).
   • 🔋 Weight — there should be resistance to the body <0.5 ohm.

If resistance > 1 ohm - look for a break if 0 ohm between the signal wire and +12V - short circuit.

Step 3: Check the voltage at the connector

Connect the connector back to the sensor and measure the voltage at the contacts with the ignition on:

• 🔌 Between signal wire And mass there must be 0.5–4.5 V (depends on temperature).
• 🔌 If the tension 5 V — sensor or circuit break.
• 🔌 If 0 V - short circuit to ground or ECU malfunction.

⚠️ Attention: On some Nissan (For example, Pathfinder R51) IAT sensor is integrated into combined sensor with absolute pressure sensor (MAP). In this case, replacing only the IAT is impossible - the entire unit must be replaced.

How to fix error code P0113: repair and replacement

The solution depends on the cause of the problem. Below are step-by-step instructions for each case.

1. Cleaning the IAT/MAF sensor

If the problem is contamination, use special cleaner (For example, CRC MAF Sensor Cleaner or WD-40 Specialist). Algorithm:

1. Remove the sensor (unscrew the 2 bolts on 10 mm or release the latches).
2. Apply the cleaner to the sensitive element (without touching it!).
3. Dry with compressed air (can) or leave for 10 minutes.
4. Install it back, reset the errors with the scanner.

⚠️ Don't use:

• 🧴 Regular alcohol or acetone - they leave a film.
• 🧽 Water or soap solutions - corrosion of contacts.
• 🧣 Cotton swabs - can damage the sensitive element.

2. Wiring repair

If a problem is found with the wires:

• 🔧 Break: Strip and solder the wires, insulate with heat shrink.
• 🔧 Short circuit: Find the short circuit (often under the corrugation of the air duct) and restore the insulation.
• 🔧 Contact oxidation: Process contact lubricant (For example, Liqui Moly Electronic-Spray).

⚠️ Attention: On Nissan X-Trail T32 with engine QR25DE often frays wiring harness near the right headlight. If you ignore the problem, it can lead to a short circuit and failure of the ECU!

3. Replacing the IAT sensor

If the sensor is faulty, it must be replaced. Prices for original and analogues:

Sensor	Original article	Analogues	Price, ₽
IAT (separate)	22680-4M000	Bosch 0 281 002 116, Denso 550-0101	800–1500
MAF + IAT (combined)	22680-4M010	Hitachi AF10116, Valeo 587001	2500–4000
IAT for diesels	22680-ED000	Hella 6PU 009 107-021	1200–2000

After replacement:

1. Clear errors with the scanner (for example, ELM327 + program Torque).
2. Warm up the engine to operating temperature.
3. Check again for errors.

Common repair mistakes and how to avoid them

Many drivers Nissan encounter a relapse of the error P0113 after a seemingly successful renovation. Reasons for personal errors:

• 🔧 Incorrect sensor installation: If, after cleaning or replacing, you forget to connect the connector or mix up the contacts, the ECU will detect an open circuit.
• 🔧 Ignoring related problems: For example, a crack in the corrugation of the air duct leads to dust getting onto the new sensor.
• 🔧 Use of non-original spare parts: Cheap analogues (for example, Chinese MAF sensors) often give incorrect readings.
• 🔧 Non-reset of ECU adaptations: After replacing the sensor, you need to reset the long-term fuel trims (for example, through Nissan Consult).

To avoid reappearance P0113:

1. Before installing a new sensor check the voltage on the connector (must be 5V between nutrition and weight).
2. Make sure air filter clean, but the air duct is corrugated whole.
3. After renovation drive 50–100 km in different modes (city/highway) so that the ECU adapts.

FAQ: Frequently asked questions about error code P0113 on Nissan

Is it possible to drive with P0113?

Short term - yes, but not recommended for long term. The ECU uses spare data (usually a fixed temperature 20°C), which leads to:

• ⛽ Increased fuel consumption by 5–15%.
• 🚗 Failures during acceleration (especially when “cold”).
• 🔥 Risk of engine overheating due to incorrect fuel mixture.

If the error appears for the first time, you can go to a service station, but it is better to fix the problem within 1–2 days.

Why does P0113 only appear when the engine is cold?

This is a typical symptom faulty IAT sensor or bad contact in the connector. At low temperatures, the resistance of the thermistor in the sensor is maximum (up to 10 kOhm), and the slightest violation of the circuit leads to a voltage surge. Warming up the engine temporarily “masks” the problem by reducing resistance.

Solution: Check the sensor with a multimeter when 0°C And 20°C - if the difference in resistance is less 2 kOhm, the sensor is faulty.

Can P0113 cause a Check Engine Check on Nissan?

Yes, in 90% cases P0113 accompanied by sunbathing Check Engine. However, on some models (for example, Nissan Note with engine HR12DE) the error may appear sporadically and not be recorded in the ECU memory as critical. In this case Check Engine does not light up, but the error can only be seen through the scanner.

How to reset error P0113 without a scanner?

You can reset the error without a scanner by disconnecting the battery:

1. Remove the terminal "−"from battery to 15–20 minutes.
2. Press the brake pedal 3–5 times (discharge capacitors in the ECU).
3. Reconnect the terminal.

⚠️ Important: After such a reset, the settings for the radio, climate control and throttle adaptation may be lost. On Nissan Juke And Qashqai with the system NissanConnect You will also need to enter the radio code.

What other errors can appear along with P0113?

Error P0113 often accompanied by:

• P0100 - circuit malfunction MAF sensor (sensors are usually combined).
• P0112 - low IAT signal level (may indicate a short circuit to ground).
• P0171/P0174 — lean mixture (the computer incorrectly adjusts the fuel supply).
• P0300 - random misfires (due to incorrect mixture).

If together with P0113 There is P0100most likely the problem is combined MAF/IAT sensor — the entire unit needs to be replaced.