Mercedes Benz

The diagnostic trouble code (DTC) P0112 is related to the Intake Air Temperature (IAT) Sensor Circuit. When this code is triggered, it indicates that the IAT sensor is reporting a low voltage or temperature input that is lower than the specified range set by the vehicle's manufacturer. The Intake Air Temperature (IAT) sensor is responsible for measuring the temperature of the incoming air into the engine's intake manifold. This information is used by the engine control module (ECM) or powertrain control module (PCM) to adjust the air-fuel mixture and ignition timing, optimizing engine performance based on the air density and temperature. Potential causes of the P0112 code include: 1. Faulty IAT Sensor: The IAT sensor itself may be malfunctioning, providing inaccurate readings or no signal at all. 2. Wiring or Connector Issues: Problems with the sensor's wiring or connector can lead to a weak or intermittent connection, resulting in low voltage readings. 3. Intake ...