P0112 BUICK code

P0112 is the OBD-II generic code that the engine control module (ECM) has recorded the IAT sensor input below the expected sensor range.

Where is the intake air temperature sensor located?

Zitat von Youtube: The intake air temperature sensor that's located right here on the inlet to the air filter housing very simple straightforward to get it.

What does engine code P0112 mean?

Code P0112 sets when the voltage signal to the PCM from the Intake Air Temperature Sensor Circuit stays below . 5 volts while the Coolant Temperature Voltage readings are rising and falling within an appropriate range.

What causes intake air temperature sensor fault codes?

A P0113 OBD-II trouble code is triggered when the voltage signal to the PCM is higher. This particular trouble code is most often associated with P0111, P0112, and P0114 codes. The air intake temperature (IAT) sensor can be found mounted within air filter duct housing or built into the mass airflow sensor (MAF).

How do you fix an IAT sensor?

Zitat von Youtube: Sensor. First carefully remove the iat sensor from the vehicle visually inspect the sensor to make sure it hasn't been contaminated by a leak from another engine component.

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How do you know if your air intake sensor is bad?

Seven Signs Your Mass Airflow Sensor Is Dirty Or Going Bad

  1. Black Exhaust. One sign that your vehicle’s MAF is going bad is black exhaust from excess fuel. …
  2. Check Engine. A faulty mass airflow sensor is a common reason why a check engine light comes on. …
  3. Hard Starts. …
  4. Hesitation. …
  5. Poor Gas Economy. …
  6. Rough Idle. …
  7. Trouble Accelerating.


What will a bad air temp sensor do?

Rough idling and rough running



Engine stalling, rough idling, engine stumbling, and random surges of power are commonly associated with IAT sensor failure. These are concerning symptoms, and they can only worsen with time.

How do I fix code P0112?

What repairs can fix the P0112 code?

  1. Repairing or replacing the IAT connector.
  2. Repairing or replacing the wiring as necessary.
  3. Replacing the IAT with a new sensor.


How is P0128 diagnosed?

The most common cause for P0128 is the engine coolant thermostat is stuck open. A simple way to diagnose this is to feel the radiator hose and monitor how hot the temperature of the coolant is when it starts flowing through the radiator hose.

What is intake air temperature sensor?

The Intake Air Temperature sensor (IAT) monitors the temperature of the air entering the engine. The engine computer (PCM) needs this information to estimate air density so it can balance air air/fuel mixture. Colder air is more dense than hot air, so cold air requires more fuel to maintain the same air/fuel ratio.

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How do you test an intake air temperature sensor?

A) Checking IAT Sensor Resistance

  1. Unplug the IAT sensor electrical connector.
  2. Set your digital multimeter to over 50K on the Ohms scale or to auto range.
  3. With the engine off, measure the sensor resistance across its terminals. …
  4. Plug in the sensor electrical connector.

What causes high intake air temperature?

Intake air temperature sensor failure. Wiring issues such as open or shorted intake air temperature sensor wiring and/or connectors. Faulty mass air flow (MAF) sensor (sometimes the IAT is integrated into the MAF) Defective intake air inlet pipe.