P2174 Fault Code

Throttle Actuator Control System Sudden Low Airflow Detected

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2174 fault code indicates that the throttle actuator control system has detected a sudden low airflow condition. This often relates to issues within the throttle body, sensor failures, or problems with the intake system. It's crucial to address this issue promptly, as it can affect the engine's performance and efficiency.

What are the symptoms of the P2174 code?

• Reduced engine power and performance
• Unstable idle or stalling
• Poor acceleration response
• Engine warning light illuminated on the dashboard

What causes the P2174 code?

• Throttle body malfunction
• Faulty mass airflow sensor (MAF)
• Vacuum leaks in the intake system
• Malfunctioning throttle position sensor (TPS)
• Issues with the electronic throttle control (ETC) system

How to fix P2174?

• Inspect and clean the throttle body to remove carbon buildup
• Check and replace the mass airflow sensor if faulty
• Identify and repair any vacuum leaks in the intake system
• Test and, if necessary, replace the throttle position sensor
• Verify the proper operation of the throttle actuator and electronic control system