HOUSING 6W1462 - Caterpillar

Probable Causes
Air inlet or exhaust system
Engine speed/timing sensor
Atmospheric pressure sensor
Boost pressure sensor
"Fuel Position" and/or "FRC Fuel Limit"
Flash file
Fuel quality
Valve adjustmentRecommended Actions
Air Inlet or Exhaust System
Check the air inlet system for restrictions and/or for leaks.
Check for an air filter restriction.
Perform a visual inspection of the system for restrictions and/or for leaks in the air inlet piping .
Ensure that the turbocharger is in good repair.
Check the exhaust system for restrictions.
Repair any leaks that were found. Remove any restrictions that were found. Replace any damaged components that were found.Engine Speed/Timing
Check the calibration of the engine speed/timing sensor. Refer to Troubleshooting, "Engine Speed/Timing Sensor - Calibrate".
Verify that the crankshaft and the camshaft drive gears are set with the proper orientation.Atmospheric Pressure Sensor
Check the atmospheric pressure sensor for dirt and/or for debris. Remove any dirt and/or debris that is present. The correct reading for the atmospheric pressure is between 50 kPa (7.25 psi) and 100 kPa (14.5 psi).Boost Pressure Sensor, "Fuel Position", and/or "FRC Fuel Limit"
Monitor the status of "Fuel Position" and "Rated Fuel Limit" while the engine is operating under full load. If "Fuel Position" equals "Rated Fuel Limit" and "Fuel Position" is less than "FRC Fuel Limit", the Electronic Control Module (ECM) is providing the correct control. Otherwise, proceed to the next Step.
Verify that there are no active diagnostic codes for the boost pressure sensor.
Monitor the status of "Boost Pressure" and "Atmospheric Pressure" on the Caterpillar Electronic Technician (ET). When the engine is not running, "Boost Pressure" should be 0 kPa (0 psi).Note: A problem with the "FRC Fuel Limit" will only cause black smoke during acceleration. A problem with the "FRC Fuel Limit" will not cause black smoke during steady state operation.Flash File
Verify that the correct flash file is installed. Refer to Troubleshooting, "Flash Programming" for information.Fuel Quality
Cold weather adversely affects the characteristics of the fuel.Valve Adjustment
Check the valve adjustment.