Bulkhead Module Fault Code Information
| J1587 SIDs for Bulkhead Module (BHM) MID 164 | ||
| SID | Description | Possible FMI |
| 000 | Backlighting Dimmer Switch Fault | 7 |
| 001 | Clutch Switch Fault | 7 |
| 002 | Reserved for Future Use | — |
| 003 | Headlamp Switch Disagreement–Both park and on inputs are closed | 7 |
| 004 | Multifunction Turn Signal Switch High Beam Input Fault | 2 |
| 005 | Ignition Switch Fault | 7 |
| 006 | Marker Interrupt Switch Fault | 7 |
| 007 | Multifunction Turn Signal Switch Disagreement–Both wiper high and wiper low inputs are on. | 2 |
| 008 | Multifunction Turn Signal Switch Disagreement–Wiper on/off is off and wiper high or low input is on | 2 |
| 009 | Wiper Park Input Fault | 7 |
| 010 | ICU3-M2 Hazard Switch CAN Feedback Error | 2 |
| 011 | Multifunction Turn Signal Switch Left Turn Signal Input Fault | 2 |
| 012 | Multifunction Turn Signal Switch Right Turn Signal Input Fault | 2 |
| 013 | Multifunction Turn Signal Switch Washer Switch Input Fault | 2 |
| 014 | Multifunction Turn Signal Switch Wiper On/Off Input Fault | 2 |
| J1587 SIDs for Bulkhead Module (BHM) MID 164 | ||
| SID | Description | Possible FMI |
| 015 | Multifunction Turn Signal Switch Wiper Low Input Fault | 2 |
| 016 | Multifunction Turn Signal Switch Wiper High Input Fault | 2 |
| 017 | Wheel-Based Vehicle Speed CAN Message Error | 2 |
| 018 | Wake-up Hardware Fault–Modules are kept awake | 7 |
| 019 | Unknown Keep Awake Fault–Modules are kept awake. | 7 |
| 020 | Extra Smart Switch | 7 |
| 021 | Duplicate Smart Switch | 7 |
| 022 | Missing Smart Switch | 7 |
| 023 | Fifth Wheel Solenoid Unexpected Pressure Feedback | 7 |
| 024 | Fifth Wheel Solenoid No Pressure Feedback | 7 |
| 025 | End of Frame Air Unexpected Pressure Feedback | 7 |
| 026 | End of Frame Air No Pressure Feedback | 7 |
| 027 | Axle Lift Unexpected Pressure Feedback | 7 |
| 028 | Axle Lift No Pressure Feedback | 7 |
| 029 | Suspension Dump Unexpected Pressure Feedback | 7 |
| 030 | Suspension Dump No Pressure Feedback | 7 |
| 031 | Suspension Proportioning Unexpected Pressure Feedback | 7 |
| 032 | Suspension Proportioning No Pressure Feedback | 7 |
| 033 | Cigar Lighter Output Fault | 7 |
| 034 | BHM/ICU3-M2 Ignition Mismatch | 7 |
| 035 | BHM/ICU3-M2 Hazard Switch Mismatch | 2 |
| 036 | BHM/ICU3-M2 Wiper Park Mismatch | 2 |
| 037 | Missing Transmission CAN Message | 9 |
| 038 | Missing Chassis Module CAN Message | 9 |
| 039 | Remote Bucket Switch Stuck Fault | 7 |
| 040 | Axle Lift 2 Unexpected Pressure Feedback | 7 |
| 041 | Axle Lift 2 No Pressure Feedback | 7 |
| 042 | PTO 1 Unexpected Pressure Feedback | 7 |
| 043 | PTO 1 No Pressure Feedback | 7 |
| 044 | PTO 2 Unexpected Pressure Feedback | 7 |
| 045 | PTO 2 No Pressure Feedback | 7 |
| 046 | CHM No PWM DRLs Fault | 8 |
| 047–049 | Reserved for Future Use | — |
| 050 | BHM B1.A—Fuel Level Input Fault (Not Used) | 3, 4 |
| 051 | BHM B1.F, B1.P, B2.K, B2.L, B6.A8—Ignition Power Output Fault | 5, 6 |
| 052 | BHM B1.J—Main BHM Power VBAT5 Input Fault | 3, 4 |
| J1587 SIDs for Bulkhead Module (BHM) MID 164 | ||
| SID | Description | Possible FMI |
| 053 | BHM B1.K, B5.C—Tail/Clearance Lamp Output Fault | 5, 6 |
| 054 | BHM B1.L—Left High Beam Output Fault | 5, 6 |
| 055 | BHM B1.N—Main BHM Power VBAT3 Input Fault | 3, 4 |
| 056 | BHM B1.R—Left Low Beam Output Fault | 5, 6 |
| 057 | BHM B2.M—A/C Clutch Output Fault | 5, 6 |
| 058 | BHM B3.D—Main BHM Power VBAT1 Input Fault | 3, 4 |
| 059 | BHM B3.E—Horn Output Fault | 3, 4, 5, 6 |
| 060 | BHM B3.F—Wiper High Speed Output Fault | 5, 6 |
| 061 | BHM B3.G—Washer Pump Output Fault | 5, 6 |
| 062 | BHM B3.H—Wiper Low Speed Output Fault | 5, 6 |
| 063 | BHM B4.B—Starter Relay Output Fault | 5, 6 |
| 064 | BHM B4.E, B4.F—Spare Output Fault | 3, 4, 5, 6 |
| 065 | BHM B4.G—Main BHM Power VBAT2 Input Fault | 3, 4 |
| 066 | BHM B4.K—Main BHM Power VBAT4 Input Fault | 3, 4 |
| 067 | BHM B4.M, B5.E—Spare Output Fault | 3, 4, 5, 6 |
| 068 | BHM B5.A, B7.A12—Dome Lamp Battery Power Output Fault | 5, 6 |
| 069 | BHM B6.A9, B6.A10—HVAC/Radio Ignition Power Output Fault | 5, 6 |
| 070 | BHM B5.B—Dome Lamp Switched Power Output Fault | 5, 6 |
| 071 | BHM B5.D—ICU Wake Output Fault | 5, 6 |
| 072 | BHM B5.F—Cigar Light Output Fault | 3, 4, 5, 6 |
| 073 | BHM B5.G—Spare Ignition Power Output Fault | 3, 4, 5, 6 |
| 074 | BHM B5.H, B7.A1—Panel Lamps Output Fault | 3, 4, 5, 6 |
| 075 | CHM C1.A, C1.H, C1.J—Backup Lamps/Alarm Output Fault | 5, 6 |
| 076 | CHM C1.G, C2.H, C3.N—Left Turn Signal Output Fault | 5, 6 |
| 077 | CHM C1.L—Right Stop Lamp Output Fault | 5, 6 |
| 078 | CHM C1.N—Left Stop Lamp Output Fault | 5, 6 |
| 079 | CHM C1.P, C2.E, C3.R—Right Turn Signal Output Fault | 5, 6 |
| 080 | CHM C2.A—Trailer Power Relay Output Fault | 3, 4 |
| 081 | CHM C2.F, C4.C, C4.D, C4.L, C4.M—Park/Marker Lamp Output | 3, 4, 5, 6 |
| 082 | CHM C3.A—Spare Output Fault | 3, 4, 5, 6 |
| 083 | CHM C3.C, C3.D—Spare Output Fault | 5, 6 |
| 084 | CHM C3.E—Low Air Pressure Input Fault | 3, 4 |
| 085 | CHM C3.F—Park Brake Input Fault | 3, 4 |
| 086 | CHM C3.J—Main CHM Power VBAT2 Input Fault | 3, 4 |
| 087 | CHM C3.K—Right DRL Output Fault | 5, 6 |
| 088 | CHM C3.L—Right Low Beam Output | 5, 6 |
| J1587 SIDs for Bulkhead Module (BHM) MID 164 | ||
| SID | Description | Possible FMI |
| 089 | CHM C4.F—Left DRL Output Fault | 5, 6 |
| 090 | CHM C4.J—Main CHM Power VBAT3 Input Fault | 3, 4 |
| 091 | CHM C4.K—Right High Beam Output | 5, 6 |
| 092 | CHM C4.P—Main CHM Power VBAT1 Input Fault | 3, 4 |
| 093 | CHM C5.A—Solenoid #0 Pressure Feedback Fault | 3, 4 |
| 094 | CHM C5.B—Solenoid #1 Pressure Feedback Fault | 3, 4 |
| 095 | CHM C5.F—Solenoid #2 Pressure Feedback Fault | 3, 4 |
| 096 | CHM C5.G—Solenoid #3 Pressure Feedback Fault | 3, 4 |
| 097 | CHM C5.H—Solenoid #0 Output Fault | 3, 4 |
| 098 | CHM C5.J—Solenoid #1 Output Fault | 3, 4 |
| 099 | CHM C5.L—Solenoid #2 Output Fault | 3, 4 |
| 100 | CHM C5.M—Solenoid #3 Output Fault | 3, 4 |
| 101 | EXM Fault (Fault in one of the EXM Outputs) | 3, 4, 5, 6 |
| J1939 SPNs for Bulkhead Module (BHM) SA 33 | ||
| SPN | Description | Possible FMI |
| 70 | Parking Brake Switch | 2 |
| 80 | Washer Fluid Level | 2 |
| 84 | Wheel-based Vehicle Speed | 19 |
| 96 | Fuel Level | 19 |
| 97 | Water In Fuel Indicator | 19 |
| 163 | Transmission Current Range | 12, 19 |
| 177 | Transmission Oil Temperature Sensor | 3, 4 |
| 523 | Transmission Current Gear | 12, 19 |
| 524 | Transmission Selected Gear | 12, 19 |
| 597 | ABS Service Brake Switch | 2 |
| 598 | Clutch Switch | 7 |
| 879 | Front Left Turn Signals Output Fault | 5, 6 |
| 880 | Trailer Stop Lamp Relay Output Fault | 4 |
| 881 | Front Right Turn Signals Output Fault | 5, 6 |
| 882 | Park/Marker Lights Output Fault | 4, 5, 6 |
| 973 | Engine Retarder Selection | 19 |
| 1487 | Backlighting Dimmer Switch Fault | 7 |
| 1550 | A/C Clutch Output Fault | 5, 6 |
| 2003 | Missing Transmission CAN Message | 9 |
| J1939 SPNs for Bulkhead Module (BHM) SA 33 | ||
| SPN | Description | Possible FMI |
| 2071 | Missing Chassis Module CAN Message | 9 |
| 6890 | CHM No PWM DRLs Fault | 8 |
| 6897 | Fuel Water Separator Heater Output Fault | 6 |
| 6898 | Brake Air Dryer Output Fault | 6 |
| 6906 | PTO 2 No Pressure Feedback | 7 |
| 6907 | PTO 2 Unexpected Pressure Feedback | 7 |
| 6908 | PTO 1 No Pressure Feedback | 7 |
| 6909 | PTO 1 Unexpected Pressure Feedback | 7 |
| 6910 | Axle Lift 2 No Pressure Feedback | 7 |
| 6911 | Axle Lift 2 Unexpected Pressure Feedback | 7 |
| 6912 | Remote Bucket Switch Stuck Fault | 7 |
| 6915 | Lamp and Gauge Ignition Output Fault | 4, 5, 6 |
| 6916 | BHM/ICU3-M2 Wiper Park CAN Message Mismatch | 2 |
| 6917 | BHM/ICU3-M2 Hazard Switch CAN Message Mismatch | 2 |
| 6918 | Missing Smart Switch | 7 |
| 6919 | Duplicate Smart Switch | 7 |
| 6920 | Extra Smart Switch | 7 |
| 6921 | Unknown Keep Awake Fault–Modules are kept awake | 7 |
| 6922 | Wake-up Hardware Fault–Modules are kept awake | 7 |
| 6923 | Wiper Parked Input Fault | 7 |
| 6924 | Multifunction Turn Signal Switch Disagreement–Wiper on/off input is off and wiper high or low input is on | 2 |
| 6925 | Multifunction Turn Signal Switch Disagreement–Both wiper high and wiper low inputs are on | 2 |
| 6926 | Marker Interrupt Switch Fault | 7 |
| 6927 | Utility Lamp Output Fault | 3, 4, 5, 6 |
| 6928 | Suspension Proportioning No Pressure Feedback | 7 |
| 6929 | Suspension Proportioning Unexpected Pressure Feedback | 7 |
| 6930 | Suspension Proportioning Solenoid Output Fault | 3, 4, 5, 6 |
| 6931 | Suspension Dump No Pressure Feedback | 7 |
| 6932 | Suspension Dump Unexpected Pressure Feedback | 7 |
| 6933 | Suspension Dump Solenoid Output Fault | 3, 4, 5, 6 |
| 6934 | Spotlights Output Fault | 3, 4, 5, 6 |
| 6935 | Snow Plow Relay Output Fault | 3, 4, 5, 6 |
| 6936 | Rear 2 Differential Lock Pressure Feedback Fault | 7 |
| 6937 | Rear 2 Differential Lock Solenoid Output Fault | 3, 4, 5, 6 |
| 6938 | Rear 1 Differential Lock Pressure Feedback Fault | 7 |
| J1939 SPNs for Bulkhead Module (BHM) SA 33 | ||
| SPN | Description | Possible FMI |
| 6939 | Rear 1 Differential Lock Solenoid Output Fault | 3, 4, 5, 6 |
| 6940 | Optional Feature Output Fault | 3, 4, 5, 6 |
| 6941 | Heated Mirrors Output Fault | 3, 4, 5, 6 |
| 6942 | Interaxle Pressure Feedback Fault | 7 |
| 6943 | Interaxle Solenoid Output Fault | 3, 4, 5, 6 |
| 6944 | Fuel Water Separator Heater Output Fault | 4, 5, 6 |
| 6945 | Front Differential Lock Pressure Feedback Fault | 7 |
| 6946 | Front Differential Lock Solenoid Output Fault | 3, 4, 5, 6 |
| 6947 | Fog Lamp Output Fault | 5, 6 |
| 6949 | Fire Pump Pressure Feedback Fault | 7 |
| 6950 | Fire Pump Solenoid Output Fault | 3, 4, 5, 6 |
| 6951 | Fifth Wheel Slide No Pressure Feedback | 7 |
| 6952 | Fifth Wheel Slide Unexpected Pressure Feedback | 7 |
| 6953 | Fifth Wheel Slide Solenoid Output Fault | 3, 4, 5, 6 |
| 6954 | End of Frame Air No Pressure Feedback | 7 |
| 6955 | End of Frame Air Unexpected Pressure Feedback | 7 |
| 6956 | End of Frame Air Solenoid Output Fault | 3, 4, 5, 6 |
| 6957 | Daytime Running Lights (DRL) Output Fault | 5, 6 |
| 6958 | Brake Line Air Dryer Output Fault | 3, 4, 5, 6 |
| 6959 | Axle Shift Pressure Feedback Fault | 7 |
| 6960 | Axle Shift Solenoid Output Fault | 3, 4, 5, 6 |
| 6961 | Axle Lift No Pressure Feedback | 7 |
| 6962 | Axle Lift Unexpected Pressure Feedback | 7 |
| 6963 | Axle Lift Solenoid Output Fault | 3, 4, 5, 6 |
| 6964 | Air Horn Solenoid Output Fault | 5, 6 |
| 6965 | BHM VBAT 5 Input Fault | 3, 4 |
| 6966 | BHM VBAT 4 Input Fault | 3, 4 |
| 6967 | BHM VBAT 3 Input Fault | 3, 4 |
| 6968 | BHM VBAT 2 Input Fault | 3, 4 |
| 6969 | BHM VBAT 1 Input Fault | 3, 4 |
| 6970 | Wiper High Output Fault | 5, 6 |
| 6971 | Wiper Low Output Fault | 5, 6 |
| 6972 | Multifunction Turn Signal Switch Wiper High Input Fault | 2 |
| 6973 | Multifunction Turn Signal Switch Wiper Low Input Fault | 2 |
| 6974 | Multifunction Turn Signal Switch Wiper On/Off Input Fault | 2 |
| 6975 | ICU3-M2 Wiper Park CAN Feedback Error | 2 |
| J1939 SPNs for Bulkhead Module (BHM) SA 33 | ||
| SPN | Description | Possible FMI |
| 6976 | Washer Pump Output Fault | 5, 6 |
| 6977 | Multifunction Turn Signal Switch Washer Switch Input Fault | 2 |
| 6978 | Multifunction Turn Signal Switch Right Turn Signal Input Fault | 2 |
| 6979 | Multifunction Turn Signal Switch Left Turn Signal Input Fault | 2 |
| 6980 | Right Stop Lamp Output Fault | 5, 6 |
| 6981 | Left Stop Lamp Output Fault | 5, 6 |
| 6982 | Wake Up Hardware Fault | 5, 6 |
| 6983 | Starter Relay (mag switch) Output Fault | 5, 6 |
| 6984 | Ignition System, Accessory Power Outputs Fault | 5, 6 |
| 6985 | Ignition System, Ignition Power Outputs Fault | 2, 5, 6 |
| 6986 | Ignition Switch Fault | 7 |
| 6987 | Taillights, Clearance Lights, License Plate Lights Output Fault | 5, 6 |
| 6988 | Left Low Beam Output Fault | 5, 6 |
| 6989 | Right Low Beam Output Fault | 5, 6 |
| 6990 | Left High Beam Output Fault | 5, 6 |
| 6991 | Right High Beam Output Fault | 5, 6 |
| 6992 | Multifunction Turn Signal Switch High Beam Input Fault | 2 |
| 6993 | Headlamp Switch Disagreement–Both park and on inputs are closed. | 7 |
| 6994 | ICU3-M2 Hazard Switch CAN Feedback Error | 19 |
| 6995 | Horn Output Fault | 3, 4, 5, 6 |
| 6996 | Dome Lamps Switched Power Output Fault | 5, 6 |
| 6997 | Cigar Lighter Output Fault | 3, 4, 5, 6 |
| 6998 | Dome Lamps Battery Power Output Fault | 5, 6 |
| 6999 | Backup Lamps/Alarm Output Fault | 5, 6 |
| 7000 | Panel Lamp Backlighting PWM Output Fault | 3, 4, 5, 6 |
| 524280 | Component ID Mismatch | 31 |
| 524281 | Application to Parameter Incompatibility | 31 |
| 524282 | Parameter Checksum Failure | 12 |
| 524283 | Application Checksum Failure | 12 |
| 524284 | Boot Block Checksum Failure | 12 |
| 524285 | Boot Hold Line is Active | 4 |
| 524286 | Ram Failure | 12 |
| Failure Mode Identifiers | ||
| FMI | J1939 Description | J1587 Description |
| 00 | Data valid but above normal operational range–Most severe level | Data valid but above normal operational range (engine overheating) |
| 01 | Data valid but below normal operational range–Most severe level | Data valid but below normal operational range (engine oil pressure too low) |
| 02 | Data erratic, intermittent, or incorrect | Data erratic, intermittent, or incorrect |
| 03 | Voltage above normal or shorted high | Voltage above normal or shorted high |
| 04 | Voltage below normal or shorted low | Voltage below normal or shorted low |
| 05 | Current below normal or open circuit | Current below normal or open circuit |
| 06 | Current above normal or grounded circuit | Current above normal or grounded circuit |
| 07 | Mechanical system not responding or out of adjustment | Mechanical system not responding properly |
| 08 | Abnormal frequency, pulse width, or period | Abnormal frequency, pulse width, or period |
| 09 | Abnormal update rate | Abnormal update rate |
| 10 | Abnormal rate of change | Abnormal rate of change |
| 11 | Root cause not known | Failure mode not identifiable |
| 12 | Bad intelligent device or component | Bad intelligent device or component |
| 13 | Out of Calibration | Out of Calibration |
| 14 | Special Instructions | Special Instructions |
| 15 | Data valid but above normal operational range–Least severe level | Reserved for future assignment by the SAE Subcommittee |
| 16 | Data valid but above normal operational range–Moderately severe level | — |
| 17 | Data valid but below normal operational range–Least severe level | — |
| 18 | Data valid but below normal operational range–Moderately severe level | — |
| 19 | Received network data in error | — |
| 31 | Condition Exists | — |
