KTM 420 GS Fault Codes

KTM 420 GS motorcycles have engines, which are made up of many different parts. These parts must work together in order for the engine to function. A problem with one of the parts can make the engine not run. There are many different parts that make up an engine. The following ktm 420 gs faults are the list of some of the parts of a motorcycle engine.

The oil level of KTM 420 GS should be the same level in the dipstick, even when the engine is cold. You can check the oil level by removing the dipstick, holding the dipstick in your hand, and then reinserting the dipstick. Then, you’ll be able to see where the oil level is.

KTM 420 GS Faults :

Another drawback that may occur along with your bike engine could be a blown gasket. this will cause your engine to overheat and presumably crack the cylinder heads. during this case, it's best to require your KTM 420 GS bike to an expert mechanic to possess it verified. Another common drawback is with the carburettor. The carburettor is that the a part of your bike that mixes air and fuel to make the combustion required to power the engine.

KTM Motorcycle Engine Fault Codes :

CodeDescription
ConstantTilt Sensor - input signal too high
ConstantTilt Sensor - input signal too low
2Crankshaft speed sensor - synchronization faulty
2Crankshaft speed sensor - signal implausible
2Crankshaft speed sensor - signal irregular
2Crankshaft speed sensor - no signal
6Throttle valve position sensor circuit A - adaption failed
6Throttle valve position sensor circuit A - input signal too low
6Throttle valve position sensor circuit A - input signal too high
9Crankcase pressure sensor - short circuit to ground
9Crankcase pressure sensor - open / short to plus
9Ambient air pressure sensor - short circuit to ground
9Ambient air pressure sensor - open / short circuit to plus
12Coolant temperature sensor - input signal too low
12Coolant temperature sensor - input signal too high
13Intake air temperature sensor - input signal too low
13Intake air temperature sensor - input signal too high
14Crankcae pressure sensor - difference too high between sensor and engine ECU
21Battery voltage - input voltage too low
21Battery voltage - input voltage too high
33Injection valve 0, cylinder 1- input signal too low
33Injection valve 0, cylinder 1- input signal too high
34Injection valve 1, cylinder 1- input signal too low
34Injection valve 1, cylinder 1- input signal too high
37Ignition coil - circuit fault
41Fuel pump - short circuit to ground / open circuit
41Fuel pump - open circuit / short circuit to plus
42Oil pump - input signal too low
42Oil pump - signal too high

KTM Flash Codes :

Blink code of FI warning
lamp (MIL)
02 FI warning lamp (MIL) flashes 2x short
Error level condition Crankshaft position sensor - measurement range or power problem
Blink code of FI warning
lamp (MIL)
06 FI warning lamp (MIL) flashes 6x short
Error level condition Throttle position sensor circuit A - input signal too low
Throttle position sensor circuit A - input signal too high
Blink code of FI warning
lamp (MIL)
09 FI warning lamp (MIL) flashes 9x short
Error level condition Manifold absolute pressure sensor - input signal too low
Manifold absolute pressure sensor - input signal too high
Blink code of FI warning
lamp (MIL)
11 FI warning lamp (MIL) flashes 1x long, 1x short
Error level condition Idle control - engine speed below target value
Idle control - engine speed above target value
Blink code of FI warning
lamp (MIL)
12 FI warning lamp (MIL) flashes 1x long, 2x short
Error level condition Engine coolant temperature sensor - input signal too low
Engine coolant temperature sensor - input signal too high
22 FLASH CODE 173
Blink code of FI warning
lamp (MIL)
13 FI warning lamp (MIL) flashes 1x long, 3x short
Error level condition Intake air temperature sensor - input signal too low
Intake air temperature sensor - input signal too high
Blink code of FI warning
lamp (MIL)
14 FI warning lamp (MIL) flashes 1x long, 4x short
Error level condition Fuel tank sensor - circuit fault
Fuel tank sensor - short circuit to ground
Fuel tank sensor - short circuit to plus
Blink code of FI warning
lamp (MIL)
15 FI warning lamp (MIL) flashes 1x long, 5x short
Error level condition Rollover sensor - plausibility
Rollover sensor - circuit fault
Rollover sensor - short circuit to ground
Rollover sensor - short circuit to plus
Blink code of FI warning
lamp (MIL)
16 FI warning lamp (MIL) flashes 1x long, 6x short
Error level condition Radiator fan motor - circuit fault
Radiator fan motor - input signal too low
Radiator fan motor - input signal too high
22 FLASH CODE 174
Blink code of FI warning
lamp (MIL)
17 FI warning lamp (MIL) flashes 1x long, 7x short
Error level condition Lambda sensor - circuit fault
Lambda sensor - input signal too low
Lambda sensor - input signal too high
Lambda sensor - no function
Blink code of FI warning
lamp (MIL)
18 FI warning lamp (MIL) flashes 1x long, 8x short
Error level condition Engine diagnosis warning lamp (MIL) - circuit fault
Engine diagnosis warning lamp (MIL) - short circuit to ground
Engine diagnosis warning lamp (MIL) - short circuit to plus
Blink code of FI warning
lamp (MIL)
19 FI warning lamp (MIL) flashes 1x long, 9x short
Error level condition Fuel pump lamp - circuit fault
Low fuel warning lamp - input signal too low
Low fuel warning lamp - input signal too high
Blink code of FI warning
lamp (MIL)
21 FI warning lamp (MIL) flashes 2x long, 1x short
Error level condition Engine control relay - switch-off delay
22 FLASH CODE 175
Blink code of FI warning
lamp (MIL)
22 FI warning lamp (MIL) flashes 2x long, 2x short
Error level condition Engine speed signal - circuit fault
Engine speed signal - input signal too low
Engine speed signal - input signal too high
Blink code of FI warning
lamp (MIL)
23 FI warning lamp (MIL) flashes 2x long, 3x short
Error level condition Travel speed sensor - measurement range or power problem
Blink code of FI warning
lamp (MIL)
24 FI warning lamp (MIL) flashes 2x long, 4x short
Error level condition System voltage - too low
System voltage - too high
System voltage - implausible value
Blink code of FI warning
lamp (MIL)
25 FI warning lamp (MIL) flashes 2x long, 5x short
Error level condition Side stand switch - plausibility
Side stand switch - circuit fault
Side stand switch - short circuit to ground
Side stand switch - short circuit to plus
22 FLASH CODE 176
Blink code of FI warning
lamp (MIL)
26 FI warning lamp (MIL) flashes 2x long, 6x short
Error level condition Sensor A reference voltage - input signal too low
Sensor A reference voltage - input signal too high
Blink code of FI warning
lamp (MIL)
27 FI warning lamp (MIL) flashes 2x long, 7x short
Error level condition Sensor B reference voltage - input signal too low
Sensor B reference voltage - input signal too high
Blink code of FI warning
lamp (MIL)
33 FI warning lamp (MIL) flashes 3x long, 3x short
Error level condition Injector - circuit fault
Injector - input signal too low
Injector - input signal too high
Blink code of FI warning
lamp (MIL)
41 FI warning lamp (MIL) flashes 4x long, 1x short
Error level condition Fuel pump relay - circuit fault
Fuel pump relay - input signal too low
Fuel pump relay - input signal too high
22 FLASH CODE 177
Blink code of FI warning
lamp (MIL)
45 FI warning lamp (MIL) flashes 4x long, 5x short
Error level condition Lambda sensor heater - circuit fault
Lambda sensor heater - short circuit to ground or open circuit
Lambda sensor heater - input signal too high
Blink code of FI warning
lamp (MIL)
49 FI warning lamp (MIL) flashes 4x long, 9x short
Error level condition Idle control - input signal too low
Idle control - input signal too high
Idle control - circuit fault

KTM 420 GS Motorcycle Problems :

  • KTM 420 gs after fire
  • KTM 420 gs air cleaner clogged, poorly sealed, or missing
  • KTM 420 gs air cleaner element clogged
  • KTM 420 gs air duct loose
  • KTM 420 gs air suction valve trouble
  • KTM 420 gs air switching valve trouble
  • KTM 420 gs backfiring when deceleration
  • KTM 420 gs cracked or obstructed intake air pressure sensor
  • KTM 420 gs crankshaft sensor trouble
  • KTM 420 gs eCU ground and power supply trouble
  • KTM 420 gs eCU trouble
  • KTM 420 gs engine overheating - Water temperature sensor or crankshaft sensor trouble
  • KTM 420 gs engine stalls easily
  • KTM 420 gs engine vacuum not synchronizing
  • KTM 420 gs exhaust Smokes Excessively
  • KTM 420 gs firing incorrect
  • KTM 420 gs fuel filter clogged
  • KTM 420 gs fuel injector clogged
  • KTM 420 gs fuel injector O-ring damage
  • KTM 420 gs fuel injector trouble
  • KTM 420 gs fuel line clogged
  • KTM 420 gs fuel poor quality or incorrect
  • KTM 420 gs fuel pressure regulator trouble
  • KTM 420 gs fuel pressure too low or too high
  • KTM 420 gs fuel pump bearings may wear. Replace the fuel pump
  • KTM 420 gs fuel pump not operating
  • KTM 420 gs fuel pump operates intermittently and often DFI fuse blows
  • KTM 420 gs fuel pump relay trouble
  • KTM 420 gs fuel pump trouble
  • KTM 420 gs fuel/air mixture incorrect
  • KTM 420 gs fuel/air mixture incorrect
  • KTM 420 gs gear position sensor, starter lockout or side stand switch trouble
  • KTM 420 gs inspect and repair or replace
  • KTM 420 gs intake air pressure sensor trouble
  • KTM 420 gs intake air temperature sensor trouble
  • KTM 420 gs intake air temperature sensor trouble
  • KTM 420 gs intermittent any DFI fault and its recovery
  • KTM 420 gs little fuel in tank
  • KTM 420 gs main throttle sensor trouble
  • KTM 420 gs no or little fuel in tank
  • KTM 420 gs poor acceleration
  • KTM 420 gs spark plug burned or gap maladjusted
  • KTM 420 gs spark plug dirty, broken or gap maladjusted
  • KTM 420 gs spark plug incorrect
  • KTM 420 gs spark weak
  • KTM 420 gs stick coil shorted or not in good contact
  • KTM 420 gs stick coil trouble
  • KTM 420 gs subthrottle sensor trouble
  • KTM 420 gs subthrottle valve actuator trouble
  • KTM 420 gs throttle body assy dust seal damage
  • KTM 420 gs throttle body assy holder loose
  • KTM 420 gs throttle valves will not fully open
  • KTM 420 gs unstable (rough) idling
  • KTM 420 gs unstable fuel pressure
  • KTM 420 gs vacuum hose
  • KTM 420 gs vehicle-down sensor trouble
  • KTM 420 gs water or foreign matter in fuel Change fuel
  • KTM 420 gs water temperature sensor trouble

Issues with the engine are typically caused by issues with the engine parts. Whether it is a fuel issue or an ignition problem, the engine parts should be inspected to determine the cause. Another issue that can occur is when the KTM 420 GS motorcycle engine is not working is a failure of the electrical system. This can cause the motorcycle to stall and not work correctly. The electrical system is typically the most complex system on a motorcycle.

Possible Failure Types :

  • Strange KTM 420 GS engine noise.
  • KTM 420 GS fog from engine.
  • Strange KTM 420 GS engine noise.
  • KTM 420 GS Vibrations and Rattling
  • KTM 420 GS Loud Acceleration
  • KTM 420 GS rusty exhaust
  • KTM 420 GS blockages in exhaust pipe
  • KTM 420 GS wear and tear exhaust
KTM Logo

Through a very complicated series of events, the informal company started in Mattighofen, Austria in 1934 became KTM AG in 1992. KTM is now one of the largest European producers of motorcycles, and are world-famous for their nearly indestructible off-road and adventure bikes.

Check other KTM fault codes.

Common abbreviations and their meanings below:

ABS: Anti-Lock Braking System
ACR: Automatic Compression Release
AFR: Air Fuel Ratio
AIS: Active Intake Solenoid
ATS: Air Temperature Sensor
BAS: Bank Angle Sensor
BCM: Body Control Module
CAN: Controller Area Network
CCM: Cruise Control Module
CKP: Crank Position Sensor
DLC: Datalink Connector
DTC: Diagnostic Trouble Codes
ECM: Electronic Control Module
ECT: Engine Coolant Temperature
ECU: Electronic Control Unit
EFI: Electronic Fuel Injection
EFP: Electronic Fuel Pump
ET: Engine Temperature sensor
FI: Fuel Injectors
FPR: Fuel Pressure Regulator
H-DSSS: Harley-Davidson® Smart Security System
HCU: Hydraulic Control Unit, ABS
HFSM: Hands Free Security Module
HO2S: Heated Oxygen Sensor
IAC: Idle Air Control actuator
IAT: Intake Air Temperature sensor
ICM: Ignition Control Module
IMAP: MAP + IAT in one unit
ISS: Ion Sensing System
JSS: Jiffy Stand Sensor
LHCM: Left Hand Control Module
MAP: Manifold Absolute Pressure sensor
MHR: Right Hand Control Module
RCM: Reverse Control Module
TCA: Throttle Control Actuator
TGS: Twist Grip Sensor
TMAP: Intake Air Temperature / Manifold Absolute Pressure equipment
TPS: Throttle Position Sensor
TSM / TSSM: (Turn Signal / Turn Signal Security Module)
VE: Volume Efficiency
VIN: Vehicle Identification Number
VSS: Vehicle Speed Sensor
WSS: Wheel Speed Sensor

These abbreviations, and the accompanying list of trouble codes, can be a great start when your KTM check engine light comes on. As mentioned above, if you are not comfortable with electrical diagnostic work, a dealership or qualified technician can offer assistance. Please keep in mind that even though you have the ability to clear a DTC using the onboard diagnostic feature, you shouldn't clear the code prior to your service appointment. Let the technician view and clear the codes as they troubleshoot the issue.

KTM and logo are registered trademarks of KTM. We are fan of MOTORCYCLES ! We love them.

Motorcycle electrical systems are very complex to fix it, check with your motorcycle diagnosis tool for the fault code and start motorcycle troubleshooting process.Some bike problems require professional troubleshooting and repair. However, there are many issues that you can easily fix on your own.

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