GEAR-REVERSE 4K5109 - Caterpillar

System Operation Description:Table 1 lists the diagnostic codes that relate to the combustion air system.Note: Some of the following codes may not be applicable for certain applications.
Table 1
CDL Code J1939 Code Description
(code descriptions may vary) Comments
2489-5 3487-5 ARD Air Pressure Control Actuator : Current Below Normal There is low current flow in the wiring between the combustion air valve and the combustion air valve controller. Regenerations are disabled. The code is logged. Engine power is derated.
2489-6 3487-6 ARD Air Pressure Control Actuator : Current Above Normal There is excessive current flow in the wiring between the combustion air valve and the combustion air valve controller. Regenerations are disabled. The code is logged. Engine power is derated.
2489-7 3487-7 ARD Air Pressure Control Actuator : Not Responding Properly The combustion air valve is not responding properly to commands from the combustion air valve controller. The code is logged. Engine power is derated.
2489-8 3487-8 ARD Air Pressure Control Actuator : Abnormal Frequency, Pulse Width, or Period The combustion air valve is not responding properly to commands from the combustion air valve controller. The code is logged. Engine power is derated.
2490-3 3488-3 ARD Air Pressure Control Actuator Position Sensor : Voltage Above Normal There is excessive voltage on the signal wire between the combustion air valve and the combustion air valve controller. The code is logged. Engine power is derated.
2490-4 3488-4 ARD Air Pressure Control Actuator Position Sensor : Voltage Below Normal There is low voltage on the signal wire between the combustion air valve and the combustion air valve controller. The code is logged. Engine power is derated.
3471-5 5591-5 ARD Air Pressure Control Module : Current Below Normal There is low current flow in the wiring between the engine ECM and the combustion air valve controller. The code is logged.
3471-6 5591-6 ARD Air Pressure Control Module : Current Above Normal There is excessive current flow in the wiring between the engine ECM and the combustion air valve controller. The code is logged.
3472-3 5591-3 ARD Air Pressure Control System : Voltage Above Normal There is excessive voltage on the voltage supply wire to the combustion air valve controller. The code is logged. Engine power is derated.
3472-4 5591-4 ARD Air Pressu