E01â - Engine overspeed error (RPM exceeds maximum limit).
E02â - Engine underspeed error (RPM below minimum threshold).
E03â - Engine speed sensor malfunction (signal abnormal).
E04â - ECU communication error (communication with engine module lost).
E05â - ECU internal error (processor or memory fault).
E11â - Fuel rail pressure sensor fault (signal out of range).
E12â - Common rail pressure abnormal (too high or too low).
E13â - Injector circuit error (open or short circuit detected).
E14â - Fuel temperature sensor malfunction.
E15â - Intake air temperature sensor fault.
E16â - Coolant temperature sensor error.
E17â - Atmospheric pressure sensor fault.
E18â - Boost pressure sensor error (turbocharger related).
E21â - Camshaft position sensor malfunction.
E22â - Crankshaft position sensor malfunction.
E23â - Timing miscalculation error (cam/crank correlation).
E24â - Glow plug relay control circuit error.
E25â - Fan clutch control circuit fault.
E31â - Battery voltage abnormal (too high or too low).
E32â - Charging system malfunction (alternator fault).
E33â - Power supply circuit error (to ECU or sensors).
E41â - Throttle position sensor fault.
E42â - Accelerator pedal sensor malfunction.
E43â - Throttle actuator (motor) drive error.
E44â - Throttle control system mismatch.
E51â - CAN bus communication failure (network error).
E52â - Display unit communication error.
E53â - Pump controller communication loss.
E54â - Valve controller communication loss.
E55â - Sensor power supply voltage fault (5V reference).
E61â - Hydraulic oil temperature sensor fault.
E62â - Hydraulic oil level sensor malfunction.
E63â - Hydraulic filter clogging warning.
E71â - Swing parking brake solenoid error.
E72â - Travel alarm circuit malfunction.
E73â - Wiper control circuit error.
E74â - Horn control circuit fault.
E81â - Pump pressure sensor (P1) malfunction.
E82â - Pump pressure sensor (P2) malfunction.
E83â - Pump displacement sensor fault.
E84â - Pump regulator solenoid error.
E85â - Pump tilting angle feedback abnormality.
E91â - Control lever sensor (front) malfunction.
E92â - Control lever sensor (rear) malfunction.
E93â - Pedal position sensor fault.
E94â - Safety lock lever sensor error.
E95â - Seat switch circuit malfunction.
E96â - Door switch circuit error.
EA1â - Exhaust temperature sensor fault (DPF related).
EA2â - DPF differential pressure sensor malfunction.
EA3â - DPF regeneration failure or interruption.
EA4â - DEF level sensor malfunction (if equipped).
EA5â - DEF dosing system error (if equipped).
EA6â - NOx sensor fault (if equipped).
EB1â - GPS/telematics communication error.
EB2â - Security system (immobilizer) fault.
EC1â - Monitor internal error (display memory or logic).
EC2â - Key switch input circuit error.
ED1â - Optional equipment communication error.
----â - No active fault codes (system normal).