KTM 2016 RC 250 Owner's Manual page 172

22 BLINK CODE
Blink code engine diagnostic
warning lamp (MIL)
Error level condition
Blink code engine diagnostic
warning lamp (MIL)
Error level condition
45 Engine diagnostic warning lamp (MIL) flashes 4x long, 5x short
Lambda sensor heater - circuit fault
Lambda sensor heater - short circuit to ground or open circuit
Lambda sensor heater - input signal too high
49 Engine diagnostic warning lamp (MIL) flashes 4x long, 9x short
Idle control - input signal too low
Idle control - input signal too high
Idle control - circuit fault
170