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Brake Control Unit (BRC) Diagnostic Trouble
Codes
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Diagnostic Trouble Code
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Display
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Solution
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BRC 628.2
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Brake System Not compatible
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Brake control unit fault. Restart engine to attempt vehicle
recovery.
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BRC 629.12
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Brake System
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Brake control unit fault. Restart engine to attempt vehicle
recovery.
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BRC 630.13
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Brake System Not Calibrated
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Control unit not calibrated.
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BRC 1079.3
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Brake System Inoperable
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Brake control unit sensor supply voltage high. Restart engine
to attempt vehicle recovery.
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BRC 1079.4
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Brake System Inoperable
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Brake control unit sensor supply voltage low. Restart engine
to attempt vehicle recovery.
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BRC 2049.9
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Communication System
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Brake control unit communication fault with cab control unit.
Restart engine to attempt vehicle recovery.
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BRC 522279.5
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Secondary Brake System Inoperable
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Control valve current low. Restart engine to attempt vehicle
recovery.
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BRC 522279.6
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Secondary Brake System Inoperable
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Control valve current high. Restart engine to attempt vehicle
recovery.
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BRC 522279.13
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Secondary Brake System Not Calibrated
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Control valve not calibrated.
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BRC 522280.0
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Secondary Brake System High
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Brake pressure higher than expected. Put vehicle in Park with
engine running and cycle secondary brake lever. Restart engine to
attempt vehicle recovery.
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BRC 522280.1
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Secondary Brake System Low
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Brake pressure lower than expected. Put vehicle in Park with
engine running and cycle secondary brake lever. Restart engine to
attempt vehicle recovery.
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BRC 522280.3
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Secondary Brake System Derated
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Brake pressure sensor voltage high. Restart engine to attempt
vehicle recovery.
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BRC 522280.4
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Secondary Brake System Derated
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Brake pressure sensor voltage low. Restart engine to attempt
vehicle recovery.
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BRC 522280.13
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Secondary Brake System Not Calibrated
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Secondary brake not calibrated.
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BRC 522281.5
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Front Brake System Derated
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Brake cooling control valve current low. Reduce electrical load
or increase engine RPM to attempt vehicle recovery.
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BRC 522281.6
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Front Brake System Derated
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Brake cooling control valve current high. Restart engine to
attempt vehicle recovery.
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BRC 523652.2
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Brake System Inoperable
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Brake control unit circuit fault. Incorrect or failed wiring
harness connection.
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BRC 523787.4
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Brake System
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Brake cooling control valve off due to low voltage. Reduce electrical
load or increase engine RPM. Power down and check fuse.
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BRC 523837.0
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Front Brake System High
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Pressure in brake system without pedal being depressed.
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BRC 523837.3
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Front Brake System Inoperable
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Rear pressure sensor circuit voltage high. Restart engine to
attempt vehicle recovery.
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BRC 523837.4
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Front Brake System Inoperable
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Rear pressure sensor circuit voltage low. Restart engine to
attempt vehicle recovery.
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BRC 523837.13
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Front Brake System Not Calibrated
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Rear brake pressure sensor not calibrated causing front brake
system fault.
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BRC 523839.19
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Secondary Brake System Derated
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Secondary brake switch fault. Put vehicle in Park with engine
running and cycle secondary brake lever. Restart engine to attempt
vehicle recovery.
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BRC 523840.0
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Front Brake System High
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Front brake pressure high. Restart engine to attempt vehicle
recovery.
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BRC 523840.1
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Front Brake System Low
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Front brake pressure low. Restart engine to attempt vehicle
recovery.
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BRC 523840.3
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Front Brake System Derated
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Front brake pressure sensor voltage high. Restart engine to
attempt vehicle recovery.
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BRC 523840.4
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Front Brake System Derated
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Front brake pressure sensor voltage low. Restart engine to attempt
vehicle recovery.
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BRC 523840.13
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Front Brake System Not Calibrated
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Brake System calibration fault.
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BRC 523841.19
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Secondary Brake System Derated
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Secondary brake position fault. Return to Park. Cycle secondary
brake lever. Restart engine to attempt vehicle recovery.
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BRC 523841.31
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Secondary Brake System Derated
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Secondary brake position fault. Restart engine to attempt vehicle
recovery.
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BRC 523844.5
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Front Brake System Inoperable
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Front brake control valve current low. Restart engine to attempt
vehicle recovery.
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BRC 523844.6
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Front Brake System Inoperable
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Front brake control valve current high. Restart engine to attempt
vehicle recovery.
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BRC 523844.13
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Front Brake System Not Calibrated
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Calibration fault.
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BRC 523910.2
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Brake System Inoperable
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Control unit fault. Restart engine to attempt vehicle recovery.
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BRC 524016.4
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Brake System Inoperable
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Control unit supply voltage low. Reduce electrical load or increase
engine RPM. Power down and check fuse. Restart engine to attempt
vehicle recovery.
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BRC 524157.19
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Front Brake System Inoperable
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Right brake pedal position switch fault. Restart engine to attempt
vehicle recovery.
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BRC 524162.19
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Front Brake System Inoperable
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Left brake pedal position switch fault. Restart engine to attempt
vehicle recovery.
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BRC 158.4
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Brake System Derated
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Control unit supply voltage low. Reduce electrical load or increase
engine RPM to attempt vehicle recovery.
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BRC 168.4
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Brake System Derated
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Control unit supply voltage low. Reduce electrical load or increase
engine RPM. Power down and check fuse. Restart engine to attempt
vehicle recovery.
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BRC 639.12
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Communication System
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Brake control unit communication fault. Restart engine to attempt
vehicle recovery.
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BRC 639.14
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Communication System
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Brake control unit communication fault. Restart engine to attempt
vehicle recovery.
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BRC 2000.9
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Communication System
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Engine control unit communication fault. Restart engine to attempt
vehicle recovery.
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BRC 2071.9
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Communication System
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Chassis control unit communication fault. Restart engine to
attempt vehicle recovery.
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BRC 2602.18
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Brake System Derated
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Hydraulic oil level low. Limit hydraulic use to allow oil reservoir
to refill. Check oil level according to Operator's Manual procedure.
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BRC 600006.31
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Brake System
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Vehicle controls not operating correctly.
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