Skip to main content

FOME Fuel and Ignition Cut Codes ("Clear Reason")

The log channels Fuel: Cut Code and Ign: Cut Code indicate why fuel or spark is being cut using one of the codes below. These are not necessarily errors, but just indicate why the particular cut was performed.

Codeenum ClearReasonTunerStudio TextDescription
0NoneNoneNo fuel/ignition cut active
1FatalFatal ErrorDisabled due to fatal error
2SettingsSetting DisabledDisabled by setting:isInjectionEnabled/isIgnitionEnabled
3HardLimitRPM LimitDisabled by hard (normal) RPM limit:useCltBasedRpmLimit/cltRevLimitRpmBins/cltRevLimitRpm/rpmHardLimit/rpmHardLimitHyst
4FaultRevLimitFault RPM LimitDisabled by (fault) RPM limit
5BoostCutBoost CutDisabled by boost cut pressure threshold:boostCutPressure
6OilPressureOil PressureDisabled due to low oil pressure after 5 seconds:minOilPressureAfterStart
7StopRequestedStop RequestedDisabled due to engine stop request
8EtbProblemETB ProblemDisabled due to detected ETB jam or control problem
9LaunchCutLaunch ControlDisabled by launch control RPM retard condition: launchRpm/launchFuelCutEnable/launchSparkCutEnable/launchControlEnable
10InjectorDutyCycleMax Injector DutyDisabled due to injector duty cycle limits: maxInjectorDutyInstant/maxInjectorDutySustained/maxInjectorDutySustainedTimeout. Resets after falling below 20% duty.
11FloodClearFlood ClearDisabled to allow flood clear mode: isCylinderCleanupEnabled enabled and TPS > 95% while cranking
12EnginePhaseEngine SyncDisabled due to lacking engine-cam sync to avoid non-sync spark on engines with symmetrical crank (NB2, Nissan VQ/MR) or odd firing order (VTwin Harley, Viper)
14IgnitionOffIgnition OffThe ignition switch is turned off
15LuaLua requestedA Lua script requested a cut
17LambdaProtectionLambda protectLambda protection cut to protect the engine. Lambda was leaner than the configured allowed for the current operating condition.