SPN/FMI Diagnostic Trouble Codes

The DTC (Diagnostic Trouble Code) consisting of SPN (Suspect Parameter Number) and FMI (Failure Mode Identifier) delivers specific information about a faulty property of the Diesel Engine.

The SPN indicates which property is in a faulty state. The FMI provides additional information about the type of error, for example, a short circuit on a sensor.

DTCs for Hatz Diesel Engine 4H50
SPNFMISource of troubleDescriptionPossible Causes
293Accelerator PedalSignal Range Check High for APP2wiring harness or component
294Accelerator PedalSignal Range Check Low for APP2wiring harness or component
840Vehicle Speed SensorMaximum threshold error for Vehicle speed
843Vehicle Speed Sensorsignal level low error for vehicle speed signal over Tachomter or hardware sensorwiring harness or component
844Vehicle Speed Sensorsignal level low error for vehicle speed signal over Tachomter or hardware sensorwiring harness or component
845Vehicle Speed SensorNPL error for Vehicle Speed signal over Tachometer or Hardware sensorwiring harness or component
913Accelerator PedalSignal Range Check High for APP1wiring harness or component
914Accelerator PedalSignal Range Check Low for APP1wiring harness or component
9111Accelerator PedalIn case of dual analog accelerator pedal, it is the
plausibility check between APP1 and APP2 and
in case of potentiometer switch accelerator
pedal, it is the plausibility check between APP1
and idle switch
wiring harness or component
953Fuel Low Pressure SystemSRC High for Environment Pressure wiring harness or component
954Fuel Low Pressure SystemSRC low for Environment Pressure wiring harness or component
9517Fuel Low Pressure SystemLow fuel pressure error monitoringfuel tank empty,
fuel filter blocked,
wiring harness or pre supply pump itself defective
9715Water in FuelWater in fuel detectedWater in fuel detected
9717Water in FuelFuel Level unplausible wiring harness or component
1000Oil Pressure SensorMaximum oil pressure error in plausibility checkwiring harness or component
1001Oil Pressure SensorMinimum oil pressure error in plausibility check wiring harness or component
1003Oil Pressure SensorOil_uRawPSwmp > Oil_SRCPSwmp.uMax_C
(4772mV)
wiring harness or component
1004Oil pressure sensor Oil_uRawPSwmp < Oil_SRCPSwmp.uMin_C
(234mV)
wiring harness or component
1020boost pressure sensor Physical Range Check high for air pressure at the upstream of intake valve sensorOver boost condition, maybe wastgate blocked
1021boost pressure sensor Physical Range Check low for air pressure at the upstream of intake valve sensorUnder boost, maybe turbocharger defective
1023boost pressure sensor The sensor raw signal Air_uRawPIntkVUs (voltage) is above Air_SRCPIntkVUs.uMax_Cwiring harness or component
1024boost pressure sensor Diagnostic fault check for SRC low in air pressure upstream of intake valve sensorwiring harness or component
1050boost pressure temperature sensor Physical Range Check high for Charged Air cooler down stream temperaturePhysical Range Check high for Charged Air cooler down stream temperature
1051boost pressure temperature sensor Physical Range Check low for Charged Air cooler down stream temperaturePhysical Range Check high for Charged Air cooler down stream temperature
1053boost pressure temperature sensor The sensor raw signal Air_uRawTCACDs (voltage) is above Air_SRCTCACDs.uMax_C (4803mV).wiring harness or component
1054boost pressure temperature sensor The sensor raw signal Air_uRawTCACDs (voltage) is above Air_SRCTCACDs.uMax_C (318mV).wiring harness or component
1073Air Filter System SRC High for Controller Mode Switch wiring harness or component
1074Air Filter System SRC low for Controller Mode Switch wiring harness or component
10714Air Filter System Error path for Clog Detection in Air filter air filter clogged/ sensor value ok?
1080environmental pressure sensor Ambient air pressure sensor range chack max errorwiring harness or component
1081environmental pressure sensor Ambient air pressure sensor range check min errorwiring harness or component
1083environmental pressure sensor fault check max signal range violated for ambient air pressure sensor wiring harness or component
1084environmental pressure sensor fault check min signal range violated for ambient air pressure sensor wiring harness or component
1100coolant temperature sensor Physical Range Check high for CEngDsT wiring harness or component
1101coolant temperature sensor Physical Range Check low for CEngDsT wiring harness or component
1103coolant temperature sensor The sensor raw signal CEngDsT_uRaw (voltage) is above CEngDsT_SRC.uMax_C (4957mV).wiring harness or component
1104coolant temperature sensor The sensed raw voltage value CEngDsT_uRaw is less than CEngDsT_SRC.uMin_C (359mV).wiring harness or component
11015coolant temperature sensor Engine coolant temperature too high plausibility errorless cooling water, water pump defective,
water cooler blocked
11017coolant temperature sensor coolant temperature did not reach the threshold temperaturesensor value problems
11018coolant temperature sensor rise in coolant is not reached the minimum rise of coolant temperature sensor value problems
11117coolant level low coolant level error -Low coolant level
-coolant level sensor defective
wiring harness defctive
1573Rail pressure sensor Sensor voltage above upper limitwiring harness or component
1574Rail pressure sensor Sensor voltage below lower limitwiring harness or component
1677AlternatorAlternator monitoring wiring harness or component
1680Supply voltage High Battery Voltage indication alternator defective or
Battery with voltage >12V is used for jump
start
1681Supply voltage Low Battery voltage indication Battery voltage low –> discharged or
defective,
alternator defective
1683Supply voltage The sensor raw signal BattU_uRaw (voltage) is above BattU_uSRCMax_C (4521mV).Battery voltage upper limit
1684Supply voltage The sensor raw signal BattU_uRaw (voltage) is below BattU_uSRCMin_C (950mV).Battery voltage below limit
1740Fuel temp. sensor Physical Range Check high for fuel temperature high engine load with low fuel level and high
ambient temperture
1741Fuel temp. sensor Physical Range Check low for fuel temperature very cold ambient temperture
1743Fuel temp. sensor SRC high for fuel temperature sensor wiring harness or component
1744Fuel temp. sensor SRC low for fuel temperature sensorwiring harness or component
1750Oil temperature sensor Physical Range Check high for Oil Temperature1) Too high load on engine
2) Sensor misadjusted or wiring harness
1751Oil temperature sensor Physical Range Check low for Oil TemperatureSensor misadjusted or wiring harness
1753Oil temperature sensor SRC High for Oil Temperaturewiring harness or component
1754Oil temperature sensor SRC low for Oil Temperature wiring harness or component
17515Oil temperature sensor Oil temperature too high plausibility error oil extremely hot, maybe missuse of engine
(tuning)
wiring harness or component
1908camshaft sensor In between of several camshaft revolutions there are too many or too less camshaft edges present or the distance or the series of the camshaft edges is unplausible. The defect debounce counter EpmCaS_ctErrSigDef is incremented at each inplausible camshaft revolution, reaches the counter the threshold EpmCaS_numErrSigDef_C the error is set. If the monitoring range is left, the debounce counter is reseted.tone wheel defective
19012camshaft sensor In between of several crankshaft revolutions there is not any camshaft edge present. The defect debounce counter EpmCaS_ctNoSig reaches the threshold EpmCaS_numNoSigDef_C. If the Monitoring range is left, the debounce counter is reseted.wiring harness or component
1902camshaft sensor DFC for camshaft offset angle exceeded wiring harness or camshaft sensor defect or
wrong mounting position or tone wheel
misadjusted
1908crankshaft sensor DFC for crankshaft signal diagnose – disturbed signalโ€“ Loose connection or poor contact on socket
โ€“ Change of air gap between sensor and
trigger wheel (eccentric trigger wheel, air gap
too big, loose sensor mounting, sensor
movement)
โ€“ Disturbance on sensor lines
โ€“ Oscillating trigger wheel as starter engages
โ€“ Bended or broken teeth on crankshaft
trigger wheel
19012crankshaft sensor There is no crankshaft signal available
(EpmHCrS_stSigMode = WAITSIG). The
camshaft signal has been checked
(EpmCaS_stNEng .7 = 1) and it is plausible
(EpmCaS_stNEng .0-2 = 0). The Camshaft
rotation counter EpmCrS_ctCaSRev_mp for
defect debouncing reaches threshold
EpmCrS_numNoSigDef_C (4 events).
wiring harness or crankshaft sensor defect
5972BrakePlausibility check for Brakewiring harness or component
6513Injectorgeneral short circuit wiring harness or injector cylinder
6515Injectoropen load wiring harness or injector load drop cylinder
6523Injectorgeneral short circuit wiring harness or injector cylinder.
6525Injectoropen load wiring harness or injector load drop cylinder
6533Injectorgeneral short circuit wiring harness or injector cylinder.
6535Injectoropen loadwiring harness or injector load drop cylinder
6543Injectorgeneral short circuit wiring harness or injector cylinder.
6545Injectoropen loadwiring harness or injector load drop cylinder
6773Starter relay Short circuit to battery error wiring harness or component
6774Starter relay Short circuit to ground error wiring harness or component
6775Starter relay No load error wiring harness or component
6776Starter relay Over temperature error on ECU powerstage for StarterOver temperature error on ECU powerstage for Starter
9762Multi State Switch Diagnostic fault check non plausibility of COM messagewiring harness or component
9763Multi State Switch Diagnostic fault check for max error of COM messagewiring harness or component
9764Multi State Switch Diagnostic fault check for min error of COM messagewiring harness or component
10765Metering Unit open load of metering unit output wiring harness or component
107612Metering Unit over teperature of device driver of metering unit output stage of ECU defect or wiring harness
107615Metering Unit short circuit to battery in the high side of the MeUn wiring harness or component
107616Metering Unit short circuit to battery of metering unit output wiring harness or component
107617Metering Unit short circuit to ground in the high side of the MeUn wiring harness or component
107618Metering Unit short circuit to ground of metering unit output wiring harness or component
110815ECUDiagnostic fault check to report the error due to cooling injection in Over Run
ECU internal fault
110816ECUDiagnostic fault check to report the error due to Over RunECU internal fault
110911ECUInjection cut off demand (ICO) for shut off coordinatorECU internal defect
11363ECUSRC high for ECU temperature sensorECU internal fault
11364ECUSRC low for ECU temperature sensorECU internal fault
12443PCV – Pressure Control Valve signal range check low error of pressure control valve AD-channel wiring harness or component
12444PCV – Pressure Control Valvesignal range check high error of pressure control valve AD-channel wiring harness or component
12445PCV – Pressure Control Valve open load of pressure control valve output wiring harness or component
124412PCV – Pressure Control Valve over teperature of device driver of pressure control valve wiring harness or component
124415PCV – Pressure Control Valve short circuit to battery in the high side of the pressure control valve wiring harness or component
124416PCV – Pressure Control Valve short circuit to battery of pressure control valve output
wiring harness or component
124417PCV – Pressure Control Valve short circuit to ground in the high side of the pressure control valve wiring harness or component
124418PCV – Pressure Control Valve short circuit to ground of the pressure control valve output wiring harness or component
176911Engine overspeed Overspeed detection in component engine protectionoverspeed caused by driver
279113EGRVlvDFC for valve position sensor voltage SRC highwiring harness or component
279114EGRVlvDFC for valve position sensor voltage SRC lowwiring harness or component
279116EGRVlvPermanent governor deviation for valveEGR valve dirty or defective
279118EGRVlvPermanent governor deviation for valveEGR valve dirty or defective
279120EGRVlvDFC for valve position sensor physical SRC highEGRVlv missadjusted or dirty
279121EGRVlvDFC for valve position sensor physical SRC lowEGRVlv missadjusted or dirty
280211ECUEEP Read Error based on the error for more blocksECU internal fault
280212ECUEEP Write Error based on the error for one blockdisconnection of battery while writing of EEPROM (afterrun).ECU internal fault
280214ECUEEP Read Error based on the error for more blocksECU internal fault
35092ECUError Sensor supplies 1Boost pressue/
Boost Temperature Pin A9
APP2 Pin K44
Fuel low pressue/
Fuel temperature Pin A21
Oil pressure/
Oil temperature Pin A24
35102ECUError Sensor supplies 2Airfilter pressure K23
EGR position sensor A22
APP1 K45
Camshaft sensor A08
35112ECUError Sensor supplies 3Rail pressure A06
35973ECUShort circuit to battery error at acuator relay ECU internal fault
35974ECUShort circuit to ground error at actuator relay ECU internal fault
35983ECUShort circuit to battery error at acuator relay ECU internal fault
35984ECUShort circuit to ground error at actuator relay ECU internal fault
53244Glow System Array of DFCs for short circuit in 1th Glow Plug glowing problems
532411Glow SystemArray of DFCs for failure in 1th Glow Plug glowing problems
53254Glow System Array of DFCs for short circuit in 2nd Glow Plug glowing problems
532511Glow System Array of DFCs for failure in 2nd Glow Plug glowing problems
53264Glow System Array of DFCs for short circuit in 3rd Glow Plug glowing problems
532611Glow System Array of DFCs for failure in 3rd Glow Plug glowing problems
53274Glow System Array of DFCs for short circuit in 4th Glow Plug glowing problems
532711Glow System Array of DFCs for failure in 4th Glow Plug glowing problems
2020119ECUSPI/COM-Errors of the Cy320 ECU internal fault
202202ECUDiagnostic fault check to report the NTP error in ADC monitoringECU internal fault
2022011ECUDiagnostic fault check to report the ADC test errorECU internal fault
2022014ECUDiagnostic fault check to report the error in Voltage ratio in ADC monitoringECU internal fault
2022111ECUDiagnostic fault check to report errors in query-/response-communicationECU internal fault
2022211ECUDiagnostic fault check to report errors in SPI communicationECU internal fault
2022311ECUDiagnostic fault check to report multiple error while checking the complete ROM-memoryECU internal fault
2022411ECUDiagnostic fault check to report the accelerator pedal position errorECU internal fault
2022511ECUDiagnostic fault check to report the engine speed errorECU internal fault
2022611ECUDiagnostic fault check to report the plausibility error between level 1 energizing time and level 2 informationECU internal fault
2022711ECUDiagnostic fault check to report the error due to plausibility between the injection begin v/s injection typeECU internal fault
2022811ECUDiagnostic fault check to report the error due to non plausibility in ZFCECU internal fault
2022911ECUDiagnosis fault check to report the demand for normal mode due to an error in the PoI2 quantityECU internal fault
2022914ECUDiagnosis fault check to report the error to
demand for an ICO due to an error in the PoI2 shut-off
ECU internal fault
2023011ECUDiagnosis fault check to report the error to demand for an ICO due to an error in the PoI3 efficiency factorECU internal fault
2023111ECUDiagnostic fault check to report the error due to injection quantity correctionECU internal fault
2023211ECUDiagnostic fault check to report the plausibility error in rail pressure monitoringECU internal fault
2023311ECUDiagnostic fault check to report the error due to torque comparison ECU internal fault
2023411ECUDiagnosis of curr path limitation forced by ECU monitoring level 2ECU internal fault
2023420ECUDiagnosis of lead path limitation forced by ECU monitoring level 2ECU internal fault
2023421ECUDiagnosis of set path limitation forced by ECU monitoring level 2ECU internal fault
202383ECUDiagnostic fault check to report “ABE active” due to overvoltage detectionECU internal fault
202384ECUDiagnostic fault check to report “ABE active” due to undervoltage detectionECU internal fault
2023811ECUDiagnostic fault check to report “WDA active” due to errors in query-/response communication ECU internal fault
2023814ECUDiagnostic fault check to report “WDA/ABE active” due to unknown reasonECU internal fault
2025111ECUVisibility of SoftwareResets in DSMECU internal fault
2025120ECUVisibility of SoftwareResets in DSMECU internal fault
2025121ECUVisibility of SoftwareResets in DSMECU internal fault
2027611ECUDiagnostic fault check to report the remote accelerator pedal position errorECU internal fault
202823EGRVlv Short circuit to battery on Out1 error for H-bridge wiring harness or component
202823EGRVlv Short circuit to battery on Out2 error for H-bridge wiring harness or component
202824EGRVlv Short circuit to ground on Out1 error for H-bridge wiring harness or component
202824EGRVlv Short circuit to ground on Out2 error for H-bridgewiring harness or component
202825EGRVlv Open load error for powerstage wiring harness or component
2028212EGRVlv Over temperature error for H-bridge wiring harness component or ECU internal fault
202882Glow System DFC for coding error when different coding words were received in a coding cycle glowing problems
202883Glow System Short circuit to battery error for Low Voltage System glowing problems
202884Glow System Short circuit to ground error for Low Voltage System glowing problems
202885Glow System No load error for Low Voltage System glowing problems
2028812Glow System Over temperature error on ECU powerstage for Glow plug Low Voltage System glowing problems
2028814Glow System
DFC for T30 missing error in GCU-T glowing problems
2028821Glow System DFC for coding error when selected coding is not working glowing problems
2028822Glow System DFC for faulty diagnostic data transmission or protocol error glowing problems
2028823Glow System DFC for glow module error in GCU-T glowing problems
202903ECUDiagnostic fault check to report the error in overvoltage monitoringECU internal fault
2029011ECU Loss of synchronization sending bytes to the MM from CPUECU internal fault
2029020ECU DFC to set a torque limitation once an error is detected before MoCSOP’s error reaction is setECU internal fault
2029021ECU Wrong set response timeECU internal fault
2029022ECU Too many SPI errors during MoCSOP execution.ECU internal fault
2029023ECU Diagnostic fault check to report the error in undervoltage monitoringECU internal fault
2029023ECU Diagnostic fault check to report that WDA is not working correctECU internal fault
2029025ECU OS timeout in the shut off path test. Failure setting the alarm task period.ECU internal fault
2029025ECU Diagnostic fault check to report that the positive test failedECU internal fault
2029025ECU Diagnostic fault check to report the timeout in the shut off path testECU internal fault
2204019CAN communication Timeout Error of CAN-Receive-Frame TSC1TECAN transmitter
DPF System
2205819ECUReported SPI and COM-Errors of a Cy146 ECU internal fault
233504Injection system short circuit in injection bank 0wiring harness or injector short circuit
233524Injection system short circuit in injection bank 1wiring harness or injector short circuit
2335412ECUCY33X is defect ECU internal fault
2355012T50 signal Defective T50 switchswitch defective or is active for a long time
236130CR system maximum positive deviation of rail pressure exceeded1.) Leakage in the high pressure section
2.) injection nozzle stuck in open position
3.) worn high pressure pump
4.) worn injector (to high injector backflow
quantity)
5.) fuel filter clogged up
6.) PSP (electric pre-supply pump) output too
low
236131CR system If the rail pressure governor deviation Rail_pDvt
falls below the limiting value
Rail_pMeUnDvtMin_CUR and if the CP3 delivery
quantity MeUn_dvolSet falls to the threshold
Rail_MeUnMon.dvolSetMin_C (-350 mm^3/s) an
error will be detected.
1.) Metering unit is stuck in open position
2.) zero delivery throttle clogged up
3.) metering unit without power due to
electrical error.
4.) pressure after zero-delivery throttle too
high.
236132CR system If the rail pressure RailP_pFlt exceeds the limiting value Rail_MeUnMon.pFltMax_C (1.750.000 hPa) an error will be detected.1.) Metering unit is stuck in open position 2.)
zero delivery throttle clogged up 3.) metering
unit without
power due to electrical error. 4.) pressure
after zero-delivery throttle too high. 5.) very
last action: change ECU
2361324CR system leakage is detected based on fuel quantity balanceMaladjusted rail pressure sensor, defective
high pressure pump, leakage,
Possible error in the low pressure stage,
Backflow too low
236140CR system maximum rail pressure exceeded maximum rail pressure exceeded
236141CR system maximum rail pressure exceeded (second stage)maximum rail pressure exceeded (second stage)
2361420CR system maximum positive deviation of rail pressure exceededmaximum positive deviation of rail pressure exceeded
2361422CR system maximum negative rail pressure deviation with closed pressure control valve exceededmaximum negative rail pressure deviation
with closed pressure control valve exceeded
2389513ECUcheck of missing injector adjustment value programmingIMA not programmed
2389613ECUcheck of missing injector adjustment value programming IMA not programmed
2389713ECUcheck of missing injector adjustment value programming IMA not programmed
2389813ECUcheck of missing injector adjustment value programming IMA not programmed
239063Pre Supply Pump short circuit to battery of pre-supply pump output wiring harness or component
239064Pre Supply Pump short circuit to ground of pre-supply pump output wiring harness or component
239065Pre Supply Pump open load of pre-supply pump output wiring harness or component
2390612Pre Supply Pump Over temperature error on ECU powerstage for Pre supply pump ECU internal fault
240000CAN communication Error path SPN1 matching of DM1DCU messageCAN transmitter
2400011ECUfunction monitoring: fault in the monitoring of the start control ECU internal fault
250000CAN Start Stop Can signal CAN transmitter