# J1939 Heavy Truck

- [Engine Signals](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/engine-signals.md)
- [engineturbocharger1speedj1939 - SPN 103](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/engine-signals/engineturbocharger1speedj1939-spn-103.md): Rate at which the rotor in the turbo charger is rotating
- [engnflinjtncntrlprssrj1939 - SPN 164](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/engine-signals/engnflinjtncntrlprssrj1939-spn-164.md): Gauge pressure of the engine oil in the hydraulic accumulator that powers an intensifier used for fuel injection in megaPascals
- [engineexhaustbank1pressure1j1939 - SPN 1209](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/engine-signals/engineexhaustbank1pressure1j1939-spn-1209.md): Pressure inside the DPF (Diesel Particulate Filter)
- [engineaveragefueleconomyj1939 - SPN 185](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/engine-signals/engineaveragefueleconomyj1939-spn-185.md): Average fuel economy over a segment of vehicle operation.
- [engineoilpressure1j1939 - SPN 100](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/engine-signals/engineoilpressure1j1939-spn-100.md): Gauge pressure of the oil in the engine lubrication system
- [enginecoolanttemperaturej1939 - SPN 110](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/engine-signals/enginecoolanttemperaturej1939-spn-110.md): Temperature of the engine coolant
- [enginetotalhoursofoperationj1939 - SPN 247](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/engine-signals/enginetotalhoursofoperationj1939-spn-247.md): Total hours the engine has operated
- [engineptogovernorsetswitchj1939 - SPN 984](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/engine-signals/engineptogovernorsetswitchj1939-spn-984.md): Indicator for how the PTO governor is set
- [engnfl1injtrtmngrl1prssrj1939 - SPN 156](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/engine-signals/engnfl1injtrtmngrl1prssrj1939-spn-156.md): The gauge pressure, in MPa, of fuel in the timing rail delivered from the supply pump to the injector timing intake.
- [actualenginepercenttorquej1939 - SPN 513 AND atlengnprnttrqfrtnlj1939 - SPN 4154](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/engine-signals/actualenginepercenttorquej1939-spn-513-and-atlengnprnttrqfrtnlj1939-spn-4154.md): actualenginepercenttorquej1939 contains the calculated output torque of the engine as an integer and atlengnprnttrqfrtnlj1939 contains the additional fraction of a percent of the output torque
- [engineintakeairpressurej1939 - SPN 106](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/engine-signals/engineintakeairpressurej1939-spn-106.md): Absolute air pressure, in kPa, at input port to intake manifold.
- [engnfl1injtrmtrngrl1prssrj1939 - SPN 157](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/engine-signals/engnfl1injtrmtrngrl1prssrj1939-spn-157.md): The gauge pressure, in MPa, of fuel in the primary, or first, metering rail as delivered from the supply pump to the injector metering intake.
- [asrenginecontrolactivej1939 - SPN 561](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/engine-signals/asrenginecontrolactivej1939-spn-561.md): Signal that indicates whether the ASR engine control is active
- [engineptogovernorresumeswitchj1939 - SPN 982](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/engine-signals/engineptogovernorresumeswitchj1939-spn-982.md): Resume switch for the PTO governor state
- [enginespeedj1939 - SPN 190 - to review](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/engine-signals/enginespeedj1939-spn-190-to-review.md): Revolutions per minute of the engine
- [cmmnddengnflinjtncntrlprssrj1939 - SPN 5314](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/engine-signals/cmmnddengnflinjtncntrlprssrj1939-spn-5314.md)
- [Aftertreatment/Diesel Particulate Filter](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/aftertreatment-diesel-particulate-filter.md)
- [dspttftatvrtitddtsstftatvj1939 - SPN 3712](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/aftertreatment-diesel-particulate-filter/dspttftatvrtitddtsstftatvj1939-spn-3712.md): Diesel Particulate Filter Active Regeneration Inhibited Due to System Fault Active
- [attttdspttftpssvrtsttsj1939 - SPN 3699](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/aftertreatment-diesel-particulate-filter/attttdspttftpssvrtsttsj1939-spn-3699.md): Indicates the state of diesel particulate filter passive regeneration.
- [aftrtrtmntsroprtrindmntsvrtj1939 - SPN 5246](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/aftertreatment-diesel-particulate-filter/aftrtrtmntsroprtrindmntsvrtj1939-spn-5246.md): Aftertreatment SCR Operator Inducement Severity
- [aftertreatment1outletnox1j1939 - SPN 3226](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/aftertreatment-diesel-particulate-filter/aftertreatment1outletnox1j1939-spn-3226.md): The raw estimate for the amount of combined NO and NO2 in the exhaust exiting the aftertreatment system measured by a NOx sensor at the aftertreatment outlet in exhaust bank 1.
- [Transmission Signals](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/transmission-signals.md)
- [transmissioncurrentgearj1939 - SPN 523](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/transmission-signals/transmissioncurrentgearj1939-spn-523.md): Gear that the transmission is in
- [Assorted Signals](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/assorted-signals.md)
- [ptogovernorstatej1939 - SPN 976](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/assorted-signals/ptogovernorstatej1939-spn-976.md): The current state or mode of operation by the power takeoff (PTO) governor
- [batterypotentialpowerinput1j1939 - SPN 168](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/assorted-signals/batterypotentialpowerinput1j1939-spn-168.md): Electrical potential of the battery (or batteries), in volts
- [Driver Behavior](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/driver-behavior.md)
- [wheelbasedvehiclespeedj1939 - SPN 1862](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/driver-behavior/wheelbasedvehiclespeedj1939-spn-1862.md): The speed the vehicle is traveling based on wheel rotational speed
- [totalvehicledistancej1939 - SPN 245](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/driver-behavior/totalvehicledistancej1939-spn-245.md): Odometer recording for the vehicle
- [Cruise Control Signals](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/cruise-control-signals.md)
- [cruisecontrolsetspeedj1939 - SPN 86](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/cruise-control-signals/cruisecontrolsetspeedj1939-spn-86.md): Speed set by the driver in the cruise control system
- [To Complete/Review](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review.md)
- [aftrtrtmntdslprtltfltrsttsj1939 - SPN 3701 - to do](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/aftrtrtmntdslprtltfltrsttsj1939-spn-3701-to-do.md): Indicates the state of the diesel particulate filter regeneration need and urgency. This is an aggregate of bank 1 and bank 2. It is a system status and not individual bank status. 000b = Regeneration
- [atttt1dspttftitpssj1939 - SPN 3609 - to do](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/atttt1dspttftitpssj1939-spn-3609-to-do.md)
- [cruisecontrolresumeswitchj1939 - SPN 601 - to do](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/cruisecontrolresumeswitchj1939-spn-601-to-do.md)
- [retarderrequestingbrakelightj1939 - SPN 1667 - to do - not yet available](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/retarderrequestingbrakelightj1939-spn-1667-to-do-not-yet-available.md)
- [enginefuel1temperature1j1939 - SPN 174 - TO DO](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/enginefuel1temperature1j1939-spn-174-to-do.md)
- [brakepedalpositionj1939 - SPN 521 - to do](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/brakepedalpositionj1939-spn-521-to-do.md): Ratio of brake pedal position to maximum pedal position
- [dslprtltfltratvrgnrtninhtdsttsj1939 - SPN 3702 - TO DO](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/dslprtltfltratvrgnrtninhtdsttsj1939-spn-3702-to-do.md): Diesel Particulate Filter Active Regeneration Inhibited Status
- [exhstsstmhghtmprtrlmpcmmndj1939 - SPN 3698 - TO DO](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/exhstsstmhghtmprtrlmpcmmndj1939-spn-3698-to-do.md): Exhaust System High Temperature Lamp Command
- [engineintakemanifold1pressurej1939 - SPN 102 - to do](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/engineintakemanifold1pressurej1939-spn-102-to-do.md)
- [aftrtrtmnt1intkgssnsr1htrcntrlj1939 - TO DO](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/aftrtrtmnt1intkgssnsr1htrcntrlj1939-to-do.md)
- [enginetorquemodej1939 - SPN 899 - to do](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/enginetorquemodej1939-spn-899-to-do.md)
- [engntrhrgr1cmprssrintktmprtrj1939 - SPN 1172 - TO DO](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/engntrhrgr1cmprssrintktmprtrj1939-spn-1172-to-do.md): Temperature of the air entering the compressor side of the turbocharger.
- [engineshutdownoverrideswitchj1939 - SPN 1237 - TO DO](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/engineshutdownoverrideswitchj1939-spn-1237-to-do.md)
- [estimatedpumpingpercenttorquej1939 - SPN 5398 - to do](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/estimatedpumpingpercenttorquej1939-spn-5398-to-do.md)
- [engineoiltemperature1j1939 - SPN 175 to do](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/engineoiltemperature1j1939-spn-175-to-do.md): Temperature of the engine oil
- [transmission1outputshaftspeedj1939 - SPN 191- to do](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/transmission1outputshaftspeedj1939-spn-191-to-do.md): Speed of the transmission output shaft
- [chargingsystempotentialvoltagej1939 - SPN 167 - to do](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/chargingsystempotentialvoltagej1939-spn-167-to-do.md): Pending signal for collection
- [acceleratorpedalposition1j1939 - SPN 91 - to do](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/acceleratorpedalposition1j1939-spn-91-to-do.md): Amount that the accelerator pedal is pressed
- [cruisecontrolactivej1939 - SPN 595 - to do](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/cruisecontrolactivej1939-spn-595-to-do.md): Whether or not the cruise control system is active
- [cruisecontrolstatesj1939 - SPN 527- to do](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/cruisecontrolstatesj1939-spn-527-to-do.md): State of the cruise control system
- [ebsbrakeswitchj1939 - SPN 1121 - TO DO](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/ebsbrakeswitchj1939-spn-1121-to-do.md)
- [fuellevel1j1939 - SPN 96 - to do](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/fuellevel1j1939-spn-96-to-do.md)
- [engineexhaust1nox1j1939 - SPN 3216 and engineexhaust1nox1readingstablej1939 - SPN 3220 - TO DO](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/to-complete-review/engineexhaust1nox1j1939-spn-3216-and-engineexhaust1nox1readingstablej1939-spn-3220-to-do.md)
