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Komatsu Engines Fault Codes List: AF to CB1548

Page 10 of 11 of the full Komatsu Engines fault code list (1,067 codes). Each entry is the code as the machine reports it and what the manufacturer data says it means.

Komatsu Engines codes AF to CB1548

  • AFAbnormality in KOMNET (CR710 Error Recognition)
  • B6Droop Rate Adjustment Volume High Error
  • B7Droop Rate Adjustment Volume Low Error
  • B8Low Idle Speed Adjustment Volume High Error
  • B9Rated Speed Median Adjustment Volume Low Error
  • B@BAZGDerating of Speed by Engine Oil Pressure Reduction
  • B@BAZKEngine Oil Level Low
  • B@BCNSEngine Overheat
  • BCRated Speed Median Adjustment Volume High Error
  • BERamp Time Adjustment Volume High Error
  • BFRamp Time Adjustment Volume Low Error
  • CA111ECM Critical Internal Failure (LH bank)
  • CA1117Engine Controller Data Lost Error (LH bank)
  • CA115Abnormality In Engine Ne And G (Bkup) Speed Sensor (LH bank)
  • CA122Sensor Detection Of Abnormally High Charge Pressure (LH bank only)
  • CA1228EGR Valve Servo Error 1
  • CA123Sensor Detection Of Abnormally Low Charge Pressure (LH bank only)
  • CA1257Multi-Controller Identification Harness Key Error (LH bank)
  • CA131Throttle Sensor Detection Of Abnormally High Level (LH bank only)
  • CA132Throttle Sensor Detection Of Abnormally Low Level (LH bank only)
  • CA135Oil Pressure Sensor Detection Of Abnormally High Pressure (LH bank only)
  • CA141Oil Pressure Sensor Detection Of Abnormally Low Pressure (LH bank only)
  • CA144Coolant Temperature Sensor Detection Of Abnormally High Temperature (LH bank only)
  • CA145Coolant Temperature Sensor Detection Of Abnormally Low Temperature (LH bank only)
  • CA153Charge Temperature Sensor Detection Of Abnormally High Temperature (LH bank only)
  • CA154Charge Temperature Sensor Detection Of Abnormally Low Charge Temperature (LH bank only)
  • CA155Derating of Speed by Charge Temperature High Error
  • CA1625EGR Valve Servo Error 2
  • CA1626Bypass Valve Solenoid Drive Short Circuit Error
  • CA1627Bypass Valve Solenoid Current Low Error
  • CA1628Bypass Valve Servo Error 1
  • CA1629Bypass Valve Servo Error 2
  • CA1631BP Valve Lift Position Sensor High Error
  • CA1632BP Valve Lift Position Sensor Low Error
  • CA1633KOMNET Datalink Timeout Error
  • CA1642EGR Inlet Press Sensor Low Error
  • CA1653EGR Inlet Press Sensor High Error
  • CA187Power Supply 2 Sensor Detection Of Abnormally Low Voltage (LH bank)
  • CA212Engine Oil Temperature Sensor Detection Of Abnormally High Temperature (LH bank only)
  • CA213Engine Oil Temperature Sensor Detection Of Abnormally Low Temperature (LH bank only)
  • CA2185Throttle Sensor Detection Of Abnormally High Supply Voltage (LH bank only)
  • CA2186Throttle Sensor Detected Abnormally Low Supply Voltage (LH bank only)
  • CA221Atmospheric Pressure Sensor Detection Of Abnormally High Pressure (LH bank only)
  • CA222Atmospheric Pressure Sensor Detection Of Abnormally Low Pressure (LH bank only)
  • CA2249Supply Pump No-Pressure Feed Error 2 (LH bank)
  • CA2265Abnormally High Level In Electric Lift Pump
  • CA2266Abnormally Low Level In Electric Lift Pump
  • CA227Power Supply 2 Sensor Detection Of Abnormally High Voltage (LH bank)
  • CA2271EGR Valve Lift Position Sensor High Error
  • CA2272EGR Valve Lift Position Sensor Low Error
  • CA2311Abnormality in IMV Solenoid
  • CA234Engine Overspeed (LH bank only)
  • CA2351EGR Valve Solenoid Current High Error
  • CA2352EGR Valve Solenoid Current Low Error
  • CA238Abnormallity in Ne Speed Sensor Power Supply
  • CA2555Intake Air Heater Relay Supply Voltage Low Error
  • CA2556Intake Air Heater Relay Supply Voltage High Error
  • CA263Fuel Temperature Sensor Detection Of Abnormally High Temperature (LH bank only)
  • CA265Fuel Temperature Sensor DetectionOf Abnormally Low Temperature (LH bank)
  • CA271PCV1 Short Circuit Error (LH bank)
  • CA272PCV1 Disconnection Error (LH bank)
  • CA273PCV2 Short Circuit Error (LH bank)
  • CA274PCV2 Disconnection Error (LH bank)
  • CA281High Pressure Pump Error
  • CA322Disconnection Or Short Circuit In Injector #1 (L/B #1) System (LH bank)
  • CA323Disconnection Or Short Circuit In Injector #5 (L/B #5) System (LH bank)
  • CA324Disconnection Or Short Circuit In Injector #3 (L/B #3) System (LH bank)
  • CA325Disconnection Or Short Circuit In Injector #6 (L/B #6) System (LH bank)
  • CA331Disconnection Or Short Circuit In Injector #2 (L/B #2) System (LH bank)
  • CA332Disconnection Or Short Circuit In Injector #4 (L/B #4) System (LH bank)
  • CA342Engine Controller Data Matching Failure (LH bank)
  • CA351Injector Drive Circuit Error (LH bank)
  • CA352Power Supply 1 Sensor Detection Of Abnormally Low Voltage (LH bank)
  • CA386Power Supply 1 Sensor Detection Of Abnormally High Voltage (LH bank)
  • CA428Water-in-Fuel Sensor High Error
  • CA429Water-in-Fuel Sensor Low Error
  • CA431Abnormality in Idle Validation Switch
  • CA432Abnormality in Idle Validation Processing
  • CA435Abnormality in Engine Oil Pressure Switch
  • CA441Supply Voltage Abnormally Low (LH bank)
  • CA442Supply Voltage Abnormally High (LH bank)
  • CA449Common Rail Pressure Abnormally High Error 2 (LH bank)
  • CA451Common Rail Pressure Sensor Detected Abnormally High Pressure (LH bank)
  • CA452Common Rail Pressure Sensor Detected Abnormally Low Pressure (LH bank)
  • CA488Derating of Torque by Charge Temperature High Error
  • CA553Common Rail Pressure Abnormally High Error 1 (LH bank)
  • CA554Common Rail Pressure Sensor Detection Of In Range Abnormality (LH bank)
  • CA559Supply Pump No-Pressure Feed Error 1 (LH bank)
  • CA689Engine Ne Speed Sensor Detected Abnormality (LH bank)
  • CA691Intake Air Temperature Sensor Detected Abnormally High Temperature (LH bank)
  • CA692Intake Air Temperature Sensor Detected Abnormally Low Temperature (LH bank only)
  • CA731Engine G (Bkup) Speed Sensor Abnormal Phase (LH bank)
  • CA757All Engine Controller Data Lost Error (LH bank)
  • CA778Engine G (Bkup) Speed Sensor Abnormal (LH bank)
  • CA781Inter Multi-Controller Communication Error (LH bank)
  • CB111Engine Controller Internal Failure (RH bank)
  • CB1117Engine Controller Data Lost Error (RH bank)
  • CB115Abnormality In Engine Ne And G (Bkup) Speed Sensor (RH bank)
  • CB1257Multi-Controller Identification Harness Key Error (RH bank)
  • CB1548Disconnection Or Short Circuit In Injector #7 (R/B #1) System (RH bank)
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