Error Code P0113
Moderate Issue
DTC Code P0113 indicates a high input from the Intake Air Temperature (IAT) sensor, which is integrated into the Mass Air Flow (MAF) sensor. This code is triggered when the Powertrain Control Module (PCM) detects an excessively high voltage from the IAT sensor, affecting calculations for idle speed, fuel mixture, and spark advance.
What symptoms indicate Error Code P0113?
- Engine Light ON: The check engine light or service engine soon warning light illuminates, indicating a potential issue with the intake air temperature sensor circuit.
- Poor Fuel Economy: The vehicle may experience reduced fuel efficiency due to incorrect air temperature readings affecting the air-fuel mixture.
- Rough Idle: The engine may idle roughly as the incorrect air temperature data can lead to improper fuel delivery.
- Reduced Engine Performance: The vehicle might exhibit decreased performance, as the engine control module (ECM) relies on accurate air temperature data for optimal operation.
What causes OBD code Error Code P0113?
- The air filter may be clogged, restricting airflow and causing inaccurate temperature readings.
- The Intake Air Temperature (IAT) sensor might be malfunctioning, leading to incorrect data being sent to the engine control unit.
- An open or shorted harness in the IAT sensor can disrupt the signal, resulting in a high input error.
- Poor electrical connections in the IAT sensor circuit can cause intermittent or faulty readings.
- The Powertrain Control Module (PCM) could be defective, misinterpreting the sensor data and triggering the error code.
How to fix OBD code Error Code P0113?
- Initial Inspection: Inspect the air intake system for any obstructions or damage. Check the air filter for dirt or clogging and replace if necessary.
- Check IAT Sensor Connection: Ensure the Intake Air Temperature (IAT) sensor is properly connected. Look for any signs of corrosion or damage on the connector and wiring.
- Test IAT Sensor: Use a multimeter to measure the resistance of the IAT sensor. Compare the readings with the manufacturer's specifications to determine if the sensor is functioning correctly.
- Inspect MAF Sensor: Clean the Mass Air Flow (MAF) sensor using a dedicated MAF sensor cleaner. Ensure the sensor is free from dirt and debris.
- Reset and Test Drive: Reset the DTC code and perform a test drive. Monitor the vehicle's performance and check if the code reappears.
- Replace MAF Sensor: If the code persists after cleaning and resetting, consider replacing the MAF sensor as it may be faulty.