SS 1033423 : J-1939 Fault Code Source Address (SA ...

1 SS 1033423 : J-1939 Fault Code Source Address (SA), Suspect Parameter Number (SPN), and Failure Mode Indicator (FMI). Descriptions J-1939 Fault Code Source Address (SA), Suspect Parameter Number (SPN), and Failure Mode Indicator (FMI) Descriptions This solution helps explain the underlying meaning of the numerical components which build a Fault code. - This is not a comprehensive list, or an alternative to the standard Fault diagnostic process and only serves as a supplemental reference - - For a complete reference see SAE documentation regarding Serial Control and Communications Heavy Duty Vehicle Network - Applicable Vehicles Any - This solution is intended as supplemental reference information to be used in a general context to assist in troubleshooting.

2 Where Used When Fault Code Descriptions do not provide the level of detail needed to diagnose an issue "too vague". This may also be useful in cases where multiple codes have identical Fault descriptions. How to Use For example using slash notation (SA/SPN/FMI). Fault : 11/1049/3 - Pressure Sensor 1 / Analog input 1. SA - 11 = Brakes - System Controller (ABS). SPN - 1049 = Brake Pressure sensing Axle 1. FMI - 3 = Voltage above normal, or shorted to high Source In this instance breaking down the code may help explain what's happening behind the scenes and identify the problem.

3 1. Source Address Description Address 0 Primary Engine Controller (CPC, ECM). 1 Secondary Engine Controller (MCM, ECM #2). 3 Primary Transmission Controller (TCM). 11 Brakes - System Controller (ABS). 17 Cruise Control (IPM, PCC). 18 Fuel System (CNG Controller). 19 Steering Controller (SAS). 23 Instrument Cluster (ICU, RX). 25 Climate Control #1 (FCU). 33 Body Controller (SSAM, SAM-CAB, BHM). 37 Off Vehicle Gateway (CGW). 42 Headway Controller (RDF, OnGuard). 47 Suspension - System Controller (ECAS). 49 Cab Controller - Primary (MSF, SHM, ECC).

4 51 Tire Pressure Controller (TPMS). 58 Climate Control #2 (ParkSmart). 61 Exhaust Emission Controller (ACM). 69 Auxiliary Heater (ACU). 71 Chassis Controller (CHM, SAM-Chassis). 74 Communications Unit, Cellular (CTP, VT). 83 Safety Restraint System (Air Bag). 127 Multi-Purpose Camera (MPC). 128 Switch Expansion Module (SEM #1). 139 J1939 - 139. 160 J1939 - 160 (OnGuard Display). 184 Trailer #3 Bridge 192 Trailer #2 Bridge 200 Trailer #1 Bridge 209 J1939 - 209 (Bendix Camera). 232 Forward Road Image Processor (VRDU). 236 Door Controller #1 (DCMD).

5 237 Door Controller #2 (DCMP). 238 Tachograph (TCO). 247 Auxiliary Power Unit (APU). SPN SPN Name 16 Engine Fuel Filter Differential Pressure (see also SPN 1382). 18 Engine Fuel Pressure (Extended Range). 19 Engine Oil Pressure (Extended Range). 20 Engine Coolant Pressure 1 (Extended Range). 21 Engine ECU Temperature (use SPN 1136). 22 Engine Extended Crankcase Blow-by Pressure 23 Generator Oil Pressure 24 Generator Coolant Temperature 27 Engine Exhaust Gas Recirculation 1 Valve Position 28 Accelerator Pedal Position 3. 29 Accelerator Pedal Position 2.

6 30 Engine Crankcase Blowby Pressure 31 Transmission Range Position 32 Transmission Splitter Position 33 Clutch Cylinder Position 36 Clutch Plates 37 Transmission Air Tank Pressure 38 Fuel Level 2. 39 Tire Pressure Check Interval 46 Pneumatic Supply Pressure 48 Barometric Pressure (Extended Range). 51 Engine Throttle Valve 1 Position 1. 52 Engine Intercooler Temperature 53 Transmission Synchronizer Clutch Value 54 Transmission Synchronizer Brake Value 59 Transmission Shift Finger Gear Position 60 Transmission Shift Finger Rail Position 64 Transmission #2 Oil Temperature 69 Two Speed Axle Switch 70 Parking Brake Switch 72 Engine Blower Bypass Valve Position 73 Auxiliary Pump Pressure 74 Maximum Vehicle Speed Limit 75 Steering Axle Temperature 76 Axle Lift Air Pressure 77 Forward Rear Drive Axle Temperature 78 Rear Rear Drive Axle Temperature 79 Road

7 Surface Temperature 80 Washer Fluid Level 81 Aftertreatment 1 Diesel Particulate Filter Intake Pressure (use SPN 3609). 82 Engine Air Start Pressure 84 Wheel-Based Vehicle Speed 86 Cruise Control Set Speed 87 Cruise Control High Set Limit Speed 88 Cruise Control Low Set Limit Speed 90 Power Takeoff Oil Temperature 91 Accelerator Pedal Position 1. 92 Engine Percent load At Current Speed 93 Engine Net Brake Torque 94 Engine Fuel Delivery Pressure 95 Engine Fuel Filter Differential Pressure 96 Fuel Level 1. 97 Water In Fuel Indicator 1.

8 98 Engine Oil Level 99 Engine Oil Filter Differential Pressure 100 Engine Oil Pressure 101 Engine Crankcase Pressure 1. 102 Engine Intake Manifold #1 Pressure 103 Engine Turbocharger 1 Speed 104 Engine Turbocharger Lube Oil Pressure 1. 105 Engine Intake Manifold 1 Temperature 106 Engine Intake Air Pressure 107 Engine Air Filter 1 Differential Pressure 108 Barometric Pressure 109 Engine Coolant Pressure 1. 110 Engine Coolant Temperature 111 Engine Coolant Level 1. 112 Engine Coolant Filter Differential Pressure 113 Engine Governor Droop 114 SLI Battery 1 Net Current 115 Alternator Current 116 Brake Application Pressure 117 Brake Primary Pressure 118 Brake Secondary Pressure 119 Hydraulic Retarder Pressure 120 Hydraulic Retarder Oil Temperature 122 Engine Retarder Percent 123 Clutch Pressure 124 Transmission Oil Level 1.

9 126 Transmission Filter Differential Pressure 127 Transmission Oil Pressure 129 Engine Fuel 1 Injector Metering Rail 2 Pressure (duplicate, use SPN 1349). 130 Engine Power Specific Fuel Economy 131 Engine Exhaust Pressure (duplicate, use SPN 1209). 132 Engine Intake Air Mass Flow Rate 133 Engine Average Fuel Rate 135 Engine Fuel Delivery Pressure (Absolute). 136 Auxiliary Vacuum Pressure Reading 137 Auxiliary Gage Pressure Reading 1. 138 Auxiliary Absolute Pressure Reading 141 Trailer, Tag Or Push Channel Tire Pressure Target 142 Drive Channel Tire Pressure Target 143 Steer Channel Tire Pressure Target 144 Trailer, Tag Or Push Channel Tire Pressure 145 Drive Channel Tire Pressure 146 Steer Channel Tire Pressure 147 Engine Average Fuel Economy (Gaseous).

10 148 Engine Instantaneous Fuel Economy (Gaseous). 149 Engine Mass Flow Rate (Gaseous) - (Obsolete - Use SPN 1241). 152 Number Of ECU Resets 153 Engine Crankcase Pressure (High Resolution). 156 Engine Fuel 1 Injector Timing Rail 1 Pressure 157 Engine Fuel 1 Injector Metering Rail 1 Pressure 158 Key Switch Battery Potential 159 Engine Gaseous Fuel Supply Pressure 1. 160 Transmission Intermediate Shaft Speed 161 Transmission Input Shaft Speed 162 Transmission Requested Range 163 Transmission Current Range 164 Engine Fuel Injection Control Pressure 165 Compass Bearing 166 Engine Rated Power 167 Charging System Potential (Voltage).