Description:

This fault code is set off when the voltage in the air brake pressure sensor circuit is higher than normal, or if the sensor is shorted to a high voltage source. High voltage can result in inaccurate pressure readings, which are critical for the safe operation of the vehicle’s air brake system.

Reaction:

The control unit degrades the functionality of the brake system to minimize risks associated with potentially unreliable brake pressure readings.

Recommendations:

• Sensor and Circuit Inspection: Inspect the air brake pressure sensor and its circuit for any signs of short circuits or damage that could be causing the high voltage readings. Replace or repair as needed.
• Check Voltage Levels: Use diagnostic tools to measure voltage levels at the sensor to pinpoint the source of the high voltage.
• Review Electrical Connections: Ensure that all electrical connections are secure and free of corrosion or other damage that could affect voltage levels.
• Replace Faulty Components: If a component within the circuit is found to be faulty, replace it to ensure proper function and accurate readings.
• Calibration and System Testing: After repairs, recalibrate the sensor and test the brake system to confirm that all components function correctly and safely under normal operation conditions.

Note:

Regular maintenance of the air brake system, including sensor checks and voltage inspections, is essential for ensuring safety and reliability, especially in vehicles that rely heavily on pneumatic braking systems.