B110B07 - B110B07 PM2.5 Rapid Detector Air Pump Malfunction

Fault Depth Definition

Fault code B110B07 identifies an anomaly in the key actuator unit of the vehicle air quality monitoring system. The PM2.5 Fast Tester relies on its internal air pump to establish a specific airflow channel, inhaling external environment air into the sensor core for particulate matter concentration sampling. This fault code indicates that the control unit has confirmed an interruption in the air pump drive loop or mechanical operation during logical judgment, preventing the completion of the sampling closed loop and preventing the system from obtaining accurate air quality data feedback. This fault involves the signal interaction integrity between the Body Control Module and the sensor.

Common Fault Symptoms

• Air quality index display abnormal or missing on the vehicle infotainment system or instrument cluster.
• Automatic air conditioning system's air purification function cannot enter working status.
• PM2.5 Fast Tester function failure.
• Relevant system warning indicator lights may illuminate under specific conditions.

Core Fault Cause Analysis

• Hardware Components: PM2.5 Fast Tester internal air pump motor winding open circuit, mechanical impeller stuck or diaphragm aging causing inability to establish negative pressure.
• Wiring/Connectors: Air pump power supply harness physical open circuit, ground terminal corrosion or connector pin poor contact, leading to signal transmission interruption.
• Controller: Control unit internal drive module logic calculation error or communication protocol verification failure, unable to correctly identify air pump status.
• Component Overall: PM2.5 Fast Tester fault.

Technical Monitoring and Trigger Logic

• Monitoring Target: Control unit monitors air pump drive current feedback and speed pulse signals in real time to confirm whether the actuator's working status meets preset logic.
• Trigger Condition: Ignition switch set to ON position.
• Logic Judgment: System performs initialization self-check when power mode switches to ON position; if pump readiness signal is not received within specified time or feedback signal exceeds expected logical range, it determines PM2.5 Fast Tester air pump fault and stores fault code.